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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v1 13/13] x86/PMU: Move vpmu files up from hvm directory
Since VPMU is now used by both HVM and PV we should move it up from HVM subtree:
xen/arch/x86/hvm/vpmu.c => xen/arch/x86/vpmu.c
xen/arch/x86/hvm/vmx/vpmu_core2.c => xen/arch/x86/vpmu_intel.c
xen/arch/x86/hvm/svm/vpmu.c => xen/arch/x86/vpmu_amd.c
xen/include/asm-x86/hvm/vpmu.h => xen/include/asm-x86/vpmu.h
No code changes (except for adjusting Makefiles and paths for #includes).
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
---
xen/arch/x86/Makefile | 1 +
xen/arch/x86/hvm/Makefile | 1 -
xen/arch/x86/hvm/svm/Makefile | 1 -
xen/arch/x86/hvm/svm/vpmu.c | 486 ------------------
xen/arch/x86/hvm/vmx/Makefile | 1 -
xen/arch/x86/hvm/vmx/vpmu_core2.c | 938 ----------------------------------
xen/arch/x86/hvm/vpmu.c | 545 --------------------
xen/arch/x86/oprofile/op_model_ppro.c | 2 +-
xen/arch/x86/traps.c | 2 +-
xen/arch/x86/vpmu.c | 545 ++++++++++++++++++++
xen/arch/x86/vpmu_amd.c | 486 ++++++++++++++++++
xen/arch/x86/vpmu_intel.c | 938 ++++++++++++++++++++++++++++++++++
xen/include/asm-x86/domain.h | 1 +
xen/include/asm-x86/hvm/vmx/vmcs.h | 1 -
xen/include/asm-x86/hvm/vpmu.h | 97 ----
xen/include/asm-x86/vpmu.h | 97 ++++
16 files changed, 2070 insertions(+), 2072 deletions(-)
delete mode 100644 xen/arch/x86/hvm/svm/vpmu.c
delete mode 100644 xen/arch/x86/hvm/vmx/vpmu_core2.c
delete mode 100644 xen/arch/x86/hvm/vpmu.c
create mode 100644 xen/arch/x86/vpmu.c
create mode 100644 xen/arch/x86/vpmu_amd.c
create mode 100644 xen/arch/x86/vpmu_intel.c
delete mode 100644 xen/include/asm-x86/hvm/vpmu.h
create mode 100644 xen/include/asm-x86/vpmu.h
diff --git a/xen/arch/x86/Makefile b/xen/arch/x86/Makefile
index a27ac44..47d067d 100644
--- a/xen/arch/x86/Makefile
+++ b/xen/arch/x86/Makefile
@@ -58,6 +58,7 @@ obj-y += crash.o
obj-y += tboot.o
obj-y += hpet.o
obj-y += xstate.o
+obj-y += vpmu.o vpmu_intel.o vpmu_amd.o
obj-$(crash_debug) += gdbstub.o
diff --git a/xen/arch/x86/hvm/Makefile b/xen/arch/x86/hvm/Makefile
index eea5555..742b83b 100644
--- a/xen/arch/x86/hvm/Makefile
+++ b/xen/arch/x86/hvm/Makefile
@@ -22,4 +22,3 @@ obj-y += vlapic.o
obj-y += vmsi.o
obj-y += vpic.o
obj-y += vpt.o
-obj-y += vpmu.o
\ No newline at end of file
diff --git a/xen/arch/x86/hvm/svm/Makefile b/xen/arch/x86/hvm/svm/Makefile
index a10a55e..760d295 100644
--- a/xen/arch/x86/hvm/svm/Makefile
+++ b/xen/arch/x86/hvm/svm/Makefile
@@ -6,4 +6,3 @@ obj-y += nestedsvm.o
obj-y += svm.o
obj-y += svmdebug.o
obj-y += vmcb.o
-obj-y += vpmu.o
diff --git a/xen/arch/x86/hvm/svm/vpmu.c b/xen/arch/x86/hvm/svm/vpmu.c
deleted file mode 100644
index 1815674..0000000
--- a/xen/arch/x86/hvm/svm/vpmu.c
+++ /dev/null
@@ -1,486 +0,0 @@
-/*
- * vpmu.c: PMU virtualization for HVM domain.
- *
- * Copyright (c) 2010, Advanced Micro Devices, Inc.
- * Parts of this code are Copyright (c) 2007, Intel Corporation
- *
- * Author: Wei Wang <wei.wang2@xxxxxxx>
- * Tested by: Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- */
-
-#include <xen/config.h>
-#include <xen/xenoprof.h>
-#include <xen/hvm/save.h>
-#include <xen/sched.h>
-#include <xen/irq.h>
-#include <asm/apic.h>
-#include <asm/hvm/vlapic.h>
-#include <asm/hvm/vpmu.h>
-#include <public/xenpmu.h>
-
-#define MSR_F10H_EVNTSEL_GO_SHIFT 40
-#define MSR_F10H_EVNTSEL_EN_SHIFT 22
-#define MSR_F10H_COUNTER_LENGTH 48
-
-#define is_guest_mode(msr) ((msr) & (1ULL << MSR_F10H_EVNTSEL_GO_SHIFT))
-#define is_pmu_enabled(msr) ((msr) & (1ULL << MSR_F10H_EVNTSEL_EN_SHIFT))
-#define set_guest_mode(msr) (msr |= (1ULL << MSR_F10H_EVNTSEL_GO_SHIFT))
-#define is_overflowed(msr) (!((msr) & (1ULL << (MSR_F10H_COUNTER_LENGTH-1))))
-
-static unsigned int __read_mostly num_counters;
-static const u32 __read_mostly *counters;
-static const u32 __read_mostly *ctrls;
-static bool_t __read_mostly k7_counters_mirrored;
-
-/* PMU Counter MSRs. */
-static const u32 AMD_F10H_COUNTERS[] = {
- MSR_K7_PERFCTR0,
- MSR_K7_PERFCTR1,
- MSR_K7_PERFCTR2,
- MSR_K7_PERFCTR3
-};
-
-/* PMU Control MSRs. */
-static const u32 AMD_F10H_CTRLS[] = {
- MSR_K7_EVNTSEL0,
- MSR_K7_EVNTSEL1,
- MSR_K7_EVNTSEL2,
- MSR_K7_EVNTSEL3
-};
-
-static const u32 AMD_F15H_COUNTERS[] = {
- MSR_AMD_FAM15H_PERFCTR0,
- MSR_AMD_FAM15H_PERFCTR1,
- MSR_AMD_FAM15H_PERFCTR2,
- MSR_AMD_FAM15H_PERFCTR3,
- MSR_AMD_FAM15H_PERFCTR4,
- MSR_AMD_FAM15H_PERFCTR5
-};
-
-static const u32 AMD_F15H_CTRLS[] = {
- MSR_AMD_FAM15H_EVNTSEL0,
- MSR_AMD_FAM15H_EVNTSEL1,
- MSR_AMD_FAM15H_EVNTSEL2,
- MSR_AMD_FAM15H_EVNTSEL3,
- MSR_AMD_FAM15H_EVNTSEL4,
- MSR_AMD_FAM15H_EVNTSEL5
-};
-
-static inline int get_pmu_reg_type(u32 addr)
-{
- if ( (addr >= MSR_K7_EVNTSEL0) && (addr <= MSR_K7_EVNTSEL3) )
- return MSR_TYPE_CTRL;
-
- if ( (addr >= MSR_K7_PERFCTR0) && (addr <= MSR_K7_PERFCTR3) )
- return MSR_TYPE_COUNTER;
-
- if ( (addr >= MSR_AMD_FAM15H_EVNTSEL0) &&
- (addr <= MSR_AMD_FAM15H_PERFCTR5 ) )
- {
- if (addr & 1)
- return MSR_TYPE_COUNTER;
- else
- return MSR_TYPE_CTRL;
- }
-
- /* unsupported registers */
- return -1;
-}
-
-static inline u32 get_fam15h_addr(u32 addr)
-{
- switch ( addr )
- {
- case MSR_K7_PERFCTR0:
- return MSR_AMD_FAM15H_PERFCTR0;
- case MSR_K7_PERFCTR1:
- return MSR_AMD_FAM15H_PERFCTR1;
- case MSR_K7_PERFCTR2:
- return MSR_AMD_FAM15H_PERFCTR2;
- case MSR_K7_PERFCTR3:
- return MSR_AMD_FAM15H_PERFCTR3;
- case MSR_K7_EVNTSEL0:
- return MSR_AMD_FAM15H_EVNTSEL0;
- case MSR_K7_EVNTSEL1:
- return MSR_AMD_FAM15H_EVNTSEL1;
- case MSR_K7_EVNTSEL2:
- return MSR_AMD_FAM15H_EVNTSEL2;
- case MSR_K7_EVNTSEL3:
- return MSR_AMD_FAM15H_EVNTSEL3;
- default:
- break;
- }
-
- return addr;
-}
-
-static void amd_vpmu_set_msr_bitmap(struct vcpu *v)
-{
- unsigned int i;
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- struct amd_vpmu_context *ctxt = vpmu->context;
-
- for ( i = 0; i < num_counters; i++ )
- {
- svm_intercept_msr(v, counters[i], MSR_INTERCEPT_NONE);
- svm_intercept_msr(v, ctrls[i], MSR_INTERCEPT_WRITE);
- }
-
- ctxt->msr_bitmap_set = 1;
-}
-
-static void amd_vpmu_unset_msr_bitmap(struct vcpu *v)
-{
- unsigned int i;
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- struct amd_vpmu_context *ctxt = vpmu->context;
-
- for ( i = 0; i < num_counters; i++ )
- {
- svm_intercept_msr(v, counters[i], MSR_INTERCEPT_RW);
- svm_intercept_msr(v, ctrls[i], MSR_INTERCEPT_RW);
- }
-
- ctxt->msr_bitmap_set = 0;
-}
-
-static int amd_vpmu_do_interrupt(struct cpu_user_regs *regs)
-{
- return 1;
-}
-
-static inline void context_load(struct vcpu *v)
-{
- unsigned int i;
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- struct amd_vpmu_context *ctxt = vpmu->context;
-
- for ( i = 0; i < num_counters; i++ )
- {
- wrmsrl(counters[i], ctxt->counters[i]);
- wrmsrl(ctrls[i], ctxt->ctrls[i]);
- }
-}
-
-static void amd_vpmu_load(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- struct amd_vpmu_context *ctxt = vpmu->context;
-
- vpmu_reset(vpmu, VPMU_FROZEN);
-
- if ( vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED) )
- {
- unsigned int i;
-
- for ( i = 0; i < num_counters; i++ )
- wrmsrl(ctrls[i], ctxt->ctrls[i]);
-
- return;
- }
-
- context_load(v);
-}
-
-static inline void context_save(struct vcpu *v)
-{
- unsigned int i;
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- struct amd_vpmu_context *ctxt = vpmu->context;
-
- /* No need to save controls -- they are saved in amd_vpmu_do_wrmsr */
- for ( i = 0; i < num_counters; i++ )
- rdmsrl(counters[i], ctxt->counters[i]);
-}
-
-static int amd_vpmu_save(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- struct amd_vpmu_context *ctx = vpmu->context;
- unsigned int i;
-
- if ( !vpmu_is_set(vpmu, VPMU_FROZEN) )
- {
- for ( i = 0; i < num_counters; i++ )
- wrmsrl(ctrls[i], 0);
-
- vpmu_set(vpmu, VPMU_FROZEN);
- }
-
- if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_SAVE) )
- return 0;
-
- context_save(v);
-
- if ( is_hvm_domain(v->domain) &&
- !vpmu_is_set(vpmu, VPMU_RUNNING) && ctx->msr_bitmap_set )
- amd_vpmu_unset_msr_bitmap(v);
-
- return 1;
-}
-
-static void context_update(unsigned int msr, u64 msr_content)
-{
- unsigned int i;
- struct vcpu *v = current;
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- struct amd_vpmu_context *ctxt = vpmu->context;
-
- if ( k7_counters_mirrored &&
- ((msr >= MSR_K7_EVNTSEL0) && (msr <= MSR_K7_PERFCTR3)) )
- {
- msr = get_fam15h_addr(msr);
- }
-
- for ( i = 0; i < num_counters; i++ )
- {
- if ( msr == ctrls[i] )
- {
- ctxt->ctrls[i] = msr_content;
- return;
- }
- else if (msr == counters[i] )
- {
- ctxt->counters[i] = msr_content;
- return;
- }
- }
-}
-
-static int amd_vpmu_do_wrmsr(unsigned int msr, uint64_t msr_content)
-{
- struct vcpu *v = current;
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
-
- /* For all counters, enable guest only mode for HVM guest */
- if ( is_hvm_domain(v->domain) && (get_pmu_reg_type(msr) == MSR_TYPE_CTRL)
&&
- !(is_guest_mode(msr_content)) )
- {
- set_guest_mode(msr_content);
- }
-
- /* check if the first counter is enabled */
- if ( (get_pmu_reg_type(msr) == MSR_TYPE_CTRL) &&
- is_pmu_enabled(msr_content) && !vpmu_is_set(vpmu, VPMU_RUNNING) )
- {
- if ( !acquire_pmu_ownership(PMU_OWNER_HVM) )
- return 1;
- vpmu_set(vpmu, VPMU_RUNNING);
- apic_write(APIC_LVTPC, APIC_DM_NMI);
- vpmu->hw_lapic_lvtpc = APIC_DM_NMI;
-
- if ( is_hvm_domain(v->domain) &&
- !((struct amd_vpmu_context *)vpmu->context)->msr_bitmap_set )
- amd_vpmu_set_msr_bitmap(v);
- }
-
- /* stop saving & restore if guest stops first counter */
- if ( (get_pmu_reg_type(msr) == MSR_TYPE_CTRL) &&
- (is_pmu_enabled(msr_content) == 0) && vpmu_is_set(vpmu, VPMU_RUNNING) )
- {
- apic_write(APIC_LVTPC, APIC_DM_NMI | APIC_LVT_MASKED);
- vpmu->hw_lapic_lvtpc = APIC_DM_NMI | APIC_LVT_MASKED;
- vpmu_reset(vpmu, VPMU_RUNNING);
- if ( is_hvm_domain(v->domain) &&
- ((struct amd_vpmu_context *)vpmu->context)->msr_bitmap_set )
- amd_vpmu_unset_msr_bitmap(v);
- release_pmu_ownship(PMU_OWNER_HVM);
- }
-
- if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED)
- || vpmu_is_set(vpmu, VPMU_FROZEN) )
- {
- context_load(v);
- vpmu_set(vpmu, VPMU_CONTEXT_LOADED);
- vpmu_reset(vpmu, VPMU_FROZEN);
- }
-
- /* Update vpmu context immediately */
- context_update(msr, msr_content);
-
- /* Write to hw counters */
- wrmsrl(msr, msr_content);
- return 1;
-}
-
-static int amd_vpmu_do_rdmsr(unsigned int msr, uint64_t *msr_content)
-{
- struct vcpu *v = current;
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
-
- if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED)
- || vpmu_is_set(vpmu, VPMU_FROZEN) )
- {
- context_load(v);
- vpmu_set(vpmu, VPMU_CONTEXT_LOADED);
- vpmu_reset(vpmu, VPMU_FROZEN);
- }
-
- rdmsrl(msr, *msr_content);
-
- return 1;
-}
-
-static int amd_vpmu_initialise(struct vcpu *v)
-{
- struct amd_vpmu_context *ctxt;
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- uint8_t family = current_cpu_data.x86;
-
- if ( vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
- return 0;
-
- if ( counters == NULL )
- {
- switch ( family )
- {
- case 0x15:
- num_counters = F15H_NUM_COUNTERS;
- counters = AMD_F15H_COUNTERS;
- ctrls = AMD_F15H_CTRLS;
- k7_counters_mirrored = 1;
- break;
- case 0x10:
- case 0x12:
- case 0x14:
- case 0x16:
- default:
- num_counters = F10H_NUM_COUNTERS;
- counters = AMD_F10H_COUNTERS;
- ctrls = AMD_F10H_CTRLS;
- k7_counters_mirrored = 0;
- break;
- }
- }
-
- if ( is_hvm_domain(v->domain) )
- {
- ctxt = xzalloc(struct amd_vpmu_context);
- if ( !ctxt )
- {
- gdprintk(XENLOG_WARNING, "Insufficient memory for PMU, "
- " PMU feature is unavailable on domain %d vcpu %d.\n",
- v->vcpu_id, v->domain->domain_id);
- return -ENOMEM;
- }
- }
- else
- ctxt = &v->arch.vpmu.xenpmu_data->pmu.amd;
-
- vpmu->context = ctxt;
- vpmu_set(vpmu, VPMU_CONTEXT_ALLOCATED);
- return 0;
-}
-
-static void amd_vpmu_destroy(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
-
- if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
- return;
-
- if ( is_hvm_domain(v->domain) )
- {
- if ( ((struct amd_vpmu_context *)vpmu->context)->msr_bitmap_set )
- amd_vpmu_unset_msr_bitmap(v);
-
- xfree(vpmu->context);
- release_pmu_ownship(PMU_OWNER_HVM);
- }
-
- vpmu->context = NULL;
- vpmu_clear(vpmu);
-}
-
-/* VPMU part of the 'q' keyhandler */
-static void amd_vpmu_dump(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- struct amd_vpmu_context *ctxt = vpmu->context;
- unsigned int i;
-
- printk(" VPMU state: 0x%x ", vpmu->flags);
- if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
- {
- printk("\n");
- return;
- }
-
- printk("(");
- if ( vpmu_is_set(vpmu, VPMU_PASSIVE_DOMAIN_ALLOCATED) )
- printk("PASSIVE_DOMAIN_ALLOCATED, ");
- if ( vpmu_is_set(vpmu, VPMU_FROZEN) )
- printk("FROZEN, ");
- if ( vpmu_is_set(vpmu, VPMU_CONTEXT_SAVE) )
- printk("SAVE, ");
- if ( vpmu_is_set(vpmu, VPMU_RUNNING) )
- printk("RUNNING, ");
- if ( vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED) )
- printk("LOADED, ");
- printk("ALLOCATED)\n");
-
- for ( i = 0; i < num_counters; i++ )
- {
- uint64_t ctrl, cntr;
-
- rdmsrl(ctrls[i], ctrl);
- rdmsrl(counters[i], cntr);
- printk(" 0x%08x: 0x%lx (0x%lx in HW) 0x%08x: 0x%lx (0x%lx in
HW)\n",
- ctrls[i], ctxt->ctrls[i], ctrl,
- counters[i], ctxt->counters[i], cntr);
- }
-}
-
-struct arch_vpmu_ops amd_vpmu_ops = {
- .do_wrmsr = amd_vpmu_do_wrmsr,
- .do_rdmsr = amd_vpmu_do_rdmsr,
- .do_interrupt = amd_vpmu_do_interrupt,
- .arch_vpmu_destroy = amd_vpmu_destroy,
- .arch_vpmu_save = amd_vpmu_save,
- .arch_vpmu_load = amd_vpmu_load,
- .arch_vpmu_dump = amd_vpmu_dump
-};
-
-int svm_vpmu_initialise(struct vcpu *v, unsigned int vpmu_flags)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- uint8_t family = current_cpu_data.x86;
- int ret = 0;
-
- /* vpmu enabled? */
- if ( vpmu_flags == VPMU_OFF )
- return 0;
-
- switch ( family )
- {
- case 0x10:
- case 0x12:
- case 0x14:
- case 0x15:
- case 0x16:
- ret = amd_vpmu_initialise(v);
- if ( !ret )
- vpmu->arch_vpmu_ops = &amd_vpmu_ops;
- return ret;
- }
-
- printk("VPMU: Initialization failed. "
- "AMD processor family %d has not "
- "been supported\n", family);
- return -EINVAL;
-}
-
diff --git a/xen/arch/x86/hvm/vmx/Makefile b/xen/arch/x86/hvm/vmx/Makefile
index 373b3d9..04a29ce 100644
--- a/xen/arch/x86/hvm/vmx/Makefile
+++ b/xen/arch/x86/hvm/vmx/Makefile
@@ -3,5 +3,4 @@ obj-y += intr.o
obj-y += realmode.o
obj-y += vmcs.o
obj-y += vmx.o
-obj-y += vpmu_core2.o
obj-y += vvmx.o
diff --git a/xen/arch/x86/hvm/vmx/vpmu_core2.c
b/xen/arch/x86/hvm/vmx/vpmu_core2.c
deleted file mode 100644
index 3f5941a..0000000
--- a/xen/arch/x86/hvm/vmx/vpmu_core2.c
+++ /dev/null
@@ -1,938 +0,0 @@
-/*
- * vpmu_core2.c: CORE 2 specific PMU virtualization for HVM domain.
- *
- * Copyright (c) 2007, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- * Author: Haitao Shan <haitao.shan@xxxxxxxxx>
- */
-
-#include <xen/config.h>
-#include <xen/sched.h>
-#include <xen/xenoprof.h>
-#include <xen/irq.h>
-#include <asm/system.h>
-#include <asm/regs.h>
-#include <asm/types.h>
-#include <asm/apic.h>
-#include <asm/traps.h>
-#include <asm/msr.h>
-#include <asm/msr-index.h>
-#include <asm/hvm/support.h>
-#include <asm/hvm/vlapic.h>
-#include <asm/hvm/vmx/vmx.h>
-#include <asm/hvm/vmx/vmcs.h>
-#include <public/sched.h>
-#include <public/hvm/save.h>
-#include <public/xenpmu.h>
-#include <asm/hvm/vpmu.h>
-
-/*
- * See Intel SDM Vol 2a Instruction Set Reference chapter 3 for CPUID
- * instruction.
- * cpuid 0xa - Architectural Performance Monitoring Leaf
- * Register eax
- */
-#define PMU_VERSION_SHIFT 0 /* Version ID */
-#define PMU_VERSION_BITS 8 /* 8 bits 0..7 */
-#define PMU_VERSION_MASK (((1 << PMU_VERSION_BITS) - 1) <<
PMU_VERSION_SHIFT)
-
-#define PMU_GENERAL_NR_SHIFT 8 /* Number of general pmu registers */
-#define PMU_GENERAL_NR_BITS 8 /* 8 bits 8..15 */
-#define PMU_GENERAL_NR_MASK (((1 << PMU_GENERAL_NR_BITS) - 1) <<
PMU_GENERAL_NR_SHIFT)
-
-#define PMU_GENERAL_WIDTH_SHIFT 16 /* Width of general pmu registers */
-#define PMU_GENERAL_WIDTH_BITS 8 /* 8 bits 16..23 */
-#define PMU_GENERAL_WIDTH_MASK (((1 << PMU_GENERAL_WIDTH_BITS) - 1) <<
PMU_GENERAL_WIDTH_SHIFT)
-/* Register edx */
-#define PMU_FIXED_NR_SHIFT 0 /* Number of fixed pmu registers */
-#define PMU_FIXED_NR_BITS 5 /* 5 bits 0..4 */
-#define PMU_FIXED_NR_MASK (((1 << PMU_FIXED_NR_BITS) -1) <<
PMU_FIXED_NR_SHIFT)
-
-#define PMU_FIXED_WIDTH_SHIFT 5 /* Width of fixed pmu registers */
-#define PMU_FIXED_WIDTH_BITS 8 /* 8 bits 5..12 */
-#define PMU_FIXED_WIDTH_MASK (((1 << PMU_FIXED_WIDTH_BITS) -1) <<
PMU_FIXED_WIDTH_SHIFT)
-
-
-/* Intel-specific VPMU features */
-#define VPMU_CPU_HAS_DS 0x100 /* Has Debug Store */
-#define VPMU_CPU_HAS_BTS 0x200 /* Has Branch Trace Store */
-
-/*
- * MSR_CORE_PERF_FIXED_CTR_CTRL contains the configuration of all fixed
- * counters. 4 bits for every counter.
- */
-#define FIXED_CTR_CTRL_BITS 4
-#define FIXED_CTR_CTRL_MASK ((1 << FIXED_CTR_CTRL_BITS) - 1)
-
-/* The index into the core2_ctrls_msr[] of this MSR used in core2_vpmu_dump()
*/
-#define MSR_CORE_PERF_FIXED_CTR_CTRL_IDX 0
-
-static int arch_pmc_cnt; /* Number of general-purpose performance counters */
-
-/*
- * QUIRK to workaround an issue on various family 6 cpus.
- * The issue leads to endless PMC interrupt loops on the processor.
- * If the interrupt handler is running and a pmc reaches the value 0, this
- * value remains forever and it triggers immediately a new interrupt after
- * finishing the handler.
- * A workaround is to read all flagged counters and if the value is 0 write
- * 1 (or another value != 0) into it.
- * There exist no errata and the real cause of this behaviour is unknown.
- */
-bool_t __read_mostly is_pmc_quirk;
-
-static void check_pmc_quirk(void)
-{
- if ( current_cpu_data.x86 == 6 )
- is_pmc_quirk = 1;
- else
- is_pmc_quirk = 0;
-}
-
-static void handle_pmc_quirk(u64 msr_content)
-{
- int i;
- u64 val;
-
- if ( !is_pmc_quirk )
- return;
-
- val = msr_content;
- for ( i = 0; i < arch_pmc_cnt; i++ )
- {
- if ( val & 0x1 )
- {
- u64 cnt;
- rdmsrl(MSR_P6_PERFCTR0 + i, cnt);
- if ( cnt == 0 )
- wrmsrl(MSR_P6_PERFCTR0 + i, 1);
- }
- val >>= 1;
- }
- val = msr_content >> 32;
- for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
- {
- if ( val & 0x1 )
- {
- u64 cnt;
- rdmsrl(MSR_CORE_PERF_FIXED_CTR0 + i, cnt);
- if ( cnt == 0 )
- wrmsrl(MSR_CORE_PERF_FIXED_CTR0 + i, 1);
- }
- val >>= 1;
- }
-}
-
-/*
- * Read the number of general counters via CPUID.EAX[0xa].EAX[8..15]
- */
-static int core2_get_pmc_count(void)
-{
- u32 eax, ebx, ecx, edx;
-
- cpuid(0xa, &eax, &ebx, &ecx, &edx);
- return ( (eax & PMU_GENERAL_NR_MASK) >> PMU_GENERAL_NR_SHIFT );
-}
-
-static u64 core2_calc_intial_glb_ctrl_msr(void)
-{
- int arch_pmc_bits = (1 << arch_pmc_cnt) - 1;
- u64 fix_pmc_bits = (1 << VPMU_CORE2_NUM_FIXED) - 1;
- return ((fix_pmc_bits << 32) | arch_pmc_bits);
-}
-
-/* edx bits 5-12: Bit width of fixed-function performance counters */
-static int core2_get_bitwidth_fix_count(void)
-{
- u32 eax, ebx, ecx, edx;
-
- cpuid(0xa, &eax, &ebx, &ecx, &edx);
- return ((edx & PMU_FIXED_WIDTH_MASK) >> PMU_FIXED_WIDTH_SHIFT);
-}
-
-static int is_core2_vpmu_msr(u32 msr_index, int *type, int *index)
-{
- int i;
-
- for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
- {
- if ( core2_fix_counters_msr[i] == msr_index )
- {
- *type = MSR_TYPE_COUNTER;
- *index = i;
- return 1;
- }
- }
-
- for ( i = 0; i < VPMU_CORE2_NUM_CTRLS; i++ )
- {
- if ( core2_ctrls_msr[i] == msr_index )
- {
- *type = MSR_TYPE_CTRL;
- *index = i;
- return 1;
- }
- }
-
- if ( (msr_index == MSR_CORE_PERF_GLOBAL_CTRL) ||
- (msr_index == MSR_CORE_PERF_GLOBAL_STATUS) ||
- (msr_index == MSR_CORE_PERF_GLOBAL_OVF_CTRL) )
- {
- *type = MSR_TYPE_GLOBAL;
- return 1;
- }
-
- if ( (msr_index >= MSR_IA32_PERFCTR0) &&
- (msr_index < (MSR_IA32_PERFCTR0 + arch_pmc_cnt)) )
- {
- *type = MSR_TYPE_ARCH_COUNTER;
- *index = msr_index - MSR_IA32_PERFCTR0;
- return 1;
- }
-
- if ( (msr_index >= MSR_P6_EVNTSEL0) &&
- (msr_index < (MSR_P6_EVNTSEL0 + arch_pmc_cnt)) )
- {
- *type = MSR_TYPE_ARCH_CTRL;
- *index = msr_index - MSR_P6_EVNTSEL0;
- return 1;
- }
-
- return 0;
-}
-
-#define msraddr_to_bitpos(x) (((x)&0xffff) + ((x)>>31)*0x2000)
-static void core2_vpmu_set_msr_bitmap(unsigned long *msr_bitmap)
-{
- int i;
-
- /* Allow Read/Write PMU Counters MSR Directly. */
- for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
- {
- clear_bit(msraddr_to_bitpos(core2_fix_counters_msr[i]), msr_bitmap);
- clear_bit(msraddr_to_bitpos(core2_fix_counters_msr[i]),
- msr_bitmap + 0x800/BYTES_PER_LONG);
- }
- for ( i = 0; i < arch_pmc_cnt; i++ )
- {
- clear_bit(msraddr_to_bitpos(MSR_IA32_PERFCTR0+i), msr_bitmap);
- clear_bit(msraddr_to_bitpos(MSR_IA32_PERFCTR0+i),
- msr_bitmap + 0x800/BYTES_PER_LONG);
- }
-
- /* Allow Read PMU Non-global Controls Directly. */
- for ( i = 0; i < VPMU_CORE2_NUM_CTRLS; i++ )
- clear_bit(msraddr_to_bitpos(core2_ctrls_msr[i]), msr_bitmap);
- for ( i = 0; i < arch_pmc_cnt; i++ )
- clear_bit(msraddr_to_bitpos(MSR_P6_EVNTSEL0+i), msr_bitmap);
-}
-
-static void core2_vpmu_unset_msr_bitmap(unsigned long *msr_bitmap)
-{
- int i;
-
- for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
- {
- set_bit(msraddr_to_bitpos(core2_fix_counters_msr[i]), msr_bitmap);
- set_bit(msraddr_to_bitpos(core2_fix_counters_msr[i]),
- msr_bitmap + 0x800/BYTES_PER_LONG);
- }
- for ( i = 0; i < arch_pmc_cnt; i++ )
- {
- set_bit(msraddr_to_bitpos(MSR_IA32_PERFCTR0+i), msr_bitmap);
- set_bit(msraddr_to_bitpos(MSR_IA32_PERFCTR0+i),
- msr_bitmap + 0x800/BYTES_PER_LONG);
- }
- for ( i = 0; i < VPMU_CORE2_NUM_CTRLS; i++ )
- set_bit(msraddr_to_bitpos(core2_ctrls_msr[i]), msr_bitmap);
- for ( i = 0; i < arch_pmc_cnt; i++ )
- set_bit(msraddr_to_bitpos(MSR_P6_EVNTSEL0+i), msr_bitmap);
-}
-
-static inline void __core2_vpmu_save(struct vcpu *v)
-{
- int i;
- struct core2_vpmu_context *core2_vpmu_cxt = vcpu_vpmu(v)->context;
-
- for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
- rdmsrl(core2_fix_counters_msr[i], core2_vpmu_cxt->fix_counters[i]);
- for ( i = 0; i < arch_pmc_cnt; i++ )
- rdmsrl(MSR_IA32_PERFCTR0+i, core2_vpmu_cxt->arch_msr_pair[i].counter);
-
- if ( !is_hvm_domain(v->domain) )
- rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, core2_vpmu_cxt->global_status);
-}
-
-static int core2_vpmu_save(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
-
- if ( !vpmu_is_set_all(vpmu, VPMU_CONTEXT_SAVE | VPMU_CONTEXT_LOADED) )
- return 0;
-
- if ( !is_hvm_domain(v->domain) )
- wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
-
- __core2_vpmu_save(v);
-
- /* Unset PMU MSR bitmap to trap lazy load. */
- if ( !vpmu_is_set(vpmu, VPMU_RUNNING) && cpu_has_vmx_msr_bitmap
- && is_hvm_domain(v->domain) )
- core2_vpmu_unset_msr_bitmap(v->arch.hvm_vmx.msr_bitmap);
-
- return 1;
-}
-
-static inline void __core2_vpmu_load(struct vcpu *v)
-{
- int i;
- struct core2_vpmu_context *core2_vpmu_cxt = vcpu_vpmu(v)->context;
-
- for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
- wrmsrl(core2_fix_counters_msr[i], core2_vpmu_cxt->fix_counters[i]);
- for ( i = 0; i < arch_pmc_cnt; i++ )
- wrmsrl(MSR_IA32_PERFCTR0+i, core2_vpmu_cxt->arch_msr_pair[i].counter);
-
- for ( i = 0; i < VPMU_CORE2_NUM_CTRLS; i++ )
- wrmsrl(core2_ctrls_msr[i], core2_vpmu_cxt->ctrls[i]);
- for ( i = 0; i < arch_pmc_cnt; i++ )
- wrmsrl(MSR_P6_EVNTSEL0+i, core2_vpmu_cxt->arch_msr_pair[i].control);
-
- if ( !is_hvm_domain(v->domain) )
- {
- wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, core2_vpmu_cxt->global_ovf_ctrl);
- wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, core2_vpmu_cxt->global_ctrl);
- }
-}
-
-static void core2_vpmu_load(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
-
- if ( vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED) )
- return;
-
- __core2_vpmu_load(v);
-}
-
-static int core2_vpmu_alloc_resource(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- struct core2_vpmu_context *core2_vpmu_cxt;
- struct core2_pmu_enable *pmu_enable = NULL;
-
- pmu_enable = xzalloc_bytes(sizeof(struct core2_pmu_enable));
- if ( !pmu_enable )
- return 0;
-
- if ( is_hvm_domain(v->domain) )
- {
- if ( !acquire_pmu_ownership(PMU_OWNER_HVM) )
- goto out_err;
-
- wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
- if ( vmx_add_host_load_msr(MSR_CORE_PERF_GLOBAL_CTRL) )
- goto out_err;
-
- if ( vmx_add_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL) )
- goto out_err;
- vmx_write_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL,
- core2_calc_intial_glb_ctrl_msr());
-
- core2_vpmu_cxt = xzalloc_bytes(sizeof(struct core2_vpmu_context));
- if ( !core2_vpmu_cxt )
- goto out_err;
- }
- else
- {
- core2_vpmu_cxt = &v->arch.vpmu.xenpmu_data->pmu.intel;
- vpmu_set(vpmu, VPMU_CONTEXT_ALLOCATED);
- }
-
- core2_vpmu_cxt->pmu_enable = pmu_enable;
- vpmu->context = (void *)core2_vpmu_cxt;
-
- vpmu_set(vpmu, VPMU_CONTEXT_ALLOCATED);
-
- return 1;
-
-out_err:
- xfree(pmu_enable);
- vmx_rm_host_load_msr(MSR_CORE_PERF_GLOBAL_CTRL);
- vmx_rm_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL);
- release_pmu_ownship(PMU_OWNER_HVM);
-
- printk("Failed to allocate VPMU resources for domain %u vcpu %u\n",
- v->vcpu_id, v->domain->domain_id);
-
- return 0;
-}
-
-static void core2_vpmu_save_msr_context(struct vcpu *v, int type,
- int index, u64 msr_data)
-{
- struct core2_vpmu_context *core2_vpmu_cxt = vcpu_vpmu(v)->context;
-
- switch ( type )
- {
- case MSR_TYPE_CTRL:
- core2_vpmu_cxt->ctrls[index] = msr_data;
- break;
- case MSR_TYPE_ARCH_CTRL:
- core2_vpmu_cxt->arch_msr_pair[index].control = msr_data;
- break;
- }
-}
-
-static int core2_vpmu_msr_common_check(u32 msr_index, int *type, int *index)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(current);
-
- if ( !is_core2_vpmu_msr(msr_index, type, index) )
- return 0;
-
- if ( unlikely(!vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED)) &&
- !core2_vpmu_alloc_resource(current) )
- return 0;
-
- /* Do the lazy load staff. */
- if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED) )
- {
- __core2_vpmu_load(current);
- vpmu_set(vpmu, VPMU_CONTEXT_LOADED);
- if ( cpu_has_vmx_msr_bitmap && is_hvm_domain(current->domain) )
- core2_vpmu_set_msr_bitmap(current->arch.hvm_vmx.msr_bitmap);
- }
- return 1;
-}
-
-static int core2_vpmu_do_wrmsr(unsigned int msr, uint64_t msr_content)
-{
- u64 global_ctrl, non_global_ctrl;
- char pmu_enable = 0;
- int i, tmp;
- int type = -1, index = -1;
- struct vcpu *v = current;
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- struct core2_vpmu_context *core2_vpmu_cxt = NULL;
-
- if ( !core2_vpmu_msr_common_check(msr, &type, &index) )
- {
- /* Special handling for BTS */
- if ( msr == MSR_IA32_DEBUGCTLMSR )
- {
- uint64_t supported = IA32_DEBUGCTLMSR_TR | IA32_DEBUGCTLMSR_BTS |
- IA32_DEBUGCTLMSR_BTINT;
-
- if ( cpu_has(¤t_cpu_data, X86_FEATURE_DSCPL) )
- supported |= IA32_DEBUGCTLMSR_BTS_OFF_OS |
- IA32_DEBUGCTLMSR_BTS_OFF_USR;
- if ( msr_content & supported )
- {
- if ( vpmu_is_set(vpmu, VPMU_CPU_HAS_BTS) )
- return 1;
- gdprintk(XENLOG_WARNING, "Debug Store is not supported on this
cpu\n");
-
- if ( is_hvm_domain(v->domain) )
- hvm_inject_hw_exception(TRAP_gp_fault, 0);
- else
- send_guest_trap(v->domain, v->vcpu_id, TRAP_gp_fault);
-
- return 0;
- }
- }
- return 0;
- }
-
- core2_vpmu_cxt = vpmu->context;
- switch ( msr )
- {
- case MSR_CORE_PERF_GLOBAL_OVF_CTRL:
- core2_vpmu_cxt->global_ovf_status &= ~msr_content;
- core2_vpmu_cxt->global_ovf_ctrl = msr_content;
- return 1;
- case MSR_CORE_PERF_GLOBAL_STATUS:
- gdprintk(XENLOG_INFO, "Can not write readonly MSR: "
- "MSR_PERF_GLOBAL_STATUS(0x38E)!\n");
- if ( is_hvm_domain(v->domain) )
- hvm_inject_hw_exception(TRAP_gp_fault, 0);
- else
- send_guest_trap(v->domain, v->vcpu_id, TRAP_gp_fault);
- return 1;
- case MSR_IA32_PEBS_ENABLE:
- if ( msr_content & 1 )
- gdprintk(XENLOG_WARNING, "Guest is trying to enable PEBS, "
- "which is not supported.\n");
- return 1;
- case MSR_IA32_DS_AREA:
- if ( vpmu_is_set(vpmu, VPMU_CPU_HAS_DS) )
- {
- if ( !is_canonical_address(msr_content) )
- {
- gdprintk(XENLOG_WARNING,
- "Illegal address for IA32_DS_AREA: %#" PRIx64 "x\n",
- msr_content);
- if ( is_hvm_domain(v->domain) )
- hvm_inject_hw_exception(TRAP_gp_fault, 0);
- else
- send_guest_trap(v->domain, v->vcpu_id, TRAP_gp_fault);
- return 1;
- }
- core2_vpmu_cxt->pmu_enable->ds_area_enable = msr_content ? 1 : 0;
- break;
- }
- gdprintk(XENLOG_WARNING, "Guest setting of DTS is ignored.\n");
- return 1;
- case MSR_CORE_PERF_GLOBAL_CTRL:
- global_ctrl = msr_content;
- for ( i = 0; i < arch_pmc_cnt; i++ )
- {
- rdmsrl(MSR_P6_EVNTSEL0+i, non_global_ctrl);
- core2_vpmu_cxt->pmu_enable->arch_pmc_enable[i] =
- global_ctrl & (non_global_ctrl >> 22) & 1;
- global_ctrl >>= 1;
- }
-
- rdmsrl(MSR_CORE_PERF_FIXED_CTR_CTRL, non_global_ctrl);
- global_ctrl = msr_content >> 32;
- for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
- {
- core2_vpmu_cxt->pmu_enable->fixed_ctr_enable[i] =
- (global_ctrl & 1) & ((non_global_ctrl & 0x3)? 1: 0);
- non_global_ctrl >>= FIXED_CTR_CTRL_BITS;
- global_ctrl >>= 1;
- }
- break;
- case MSR_CORE_PERF_FIXED_CTR_CTRL:
- non_global_ctrl = msr_content;
- if ( is_hvm_domain(v->domain) )
- vmx_read_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL, &global_ctrl);
- else
- rdmsrl(MSR_CORE_PERF_GLOBAL_CTRL, global_ctrl);
- global_ctrl >>= 32;
- for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
- {
- core2_vpmu_cxt->pmu_enable->fixed_ctr_enable[i] =
- (global_ctrl & 1) & ((non_global_ctrl & 0x3)? 1: 0);
- non_global_ctrl >>= 4;
- global_ctrl >>= 1;
- }
- break;
- default:
- tmp = msr - MSR_P6_EVNTSEL0;
- if ( is_hvm_domain(v->domain) )
- vmx_read_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL, &global_ctrl);
- else
- rdmsrl(MSR_CORE_PERF_GLOBAL_CTRL, global_ctrl);
- if ( tmp >= 0 && tmp < arch_pmc_cnt )
- core2_vpmu_cxt->pmu_enable->arch_pmc_enable[tmp] =
- (global_ctrl >> tmp) & (msr_content >> 22) & 1;
- }
-
- for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
- pmu_enable |= core2_vpmu_cxt->pmu_enable->fixed_ctr_enable[i];
- for ( i = 0; i < arch_pmc_cnt; i++ )
- pmu_enable |= core2_vpmu_cxt->pmu_enable->arch_pmc_enable[i];
- pmu_enable |= core2_vpmu_cxt->pmu_enable->ds_area_enable;
- if ( pmu_enable )
- vpmu_set(vpmu, VPMU_RUNNING);
- else
- vpmu_reset(vpmu, VPMU_RUNNING);
-
- if ( is_hvm_domain(v->domain) )
- {
- /* Setup LVTPC in local apic */
- if ( vpmu_is_set(vpmu, VPMU_RUNNING) &&
- is_vlapic_lvtpc_enabled(vcpu_vlapic(v)) )
- {
- apic_write_around(APIC_LVTPC, APIC_DM_NMI);
- vpmu->hw_lapic_lvtpc = APIC_DM_NMI;
- }
- else
- {
- apic_write_around(APIC_LVTPC, APIC_DM_NMI | APIC_LVT_MASKED);
- vpmu->hw_lapic_lvtpc = APIC_DM_NMI | APIC_LVT_MASKED;
- }
- }
-
- core2_vpmu_save_msr_context(v, type, index, msr_content);
- if ( type != MSR_TYPE_GLOBAL )
- {
- u64 mask;
- int inject_gp = 0;
- switch ( type )
- {
- case MSR_TYPE_ARCH_CTRL: /* MSR_P6_EVNTSEL[0,...] */
- mask = ~((1ull << 32) - 1);
- if (msr_content & mask)
- inject_gp = 1;
- break;
- case MSR_TYPE_CTRL: /* IA32_FIXED_CTR_CTRL */
- if ( msr == MSR_IA32_DS_AREA )
- break;
- /* 4 bits per counter, currently 3 fixed counters implemented. */
- mask = ~((1ull << (VPMU_CORE2_NUM_FIXED * FIXED_CTR_CTRL_BITS)) -
1);
- if (msr_content & mask)
- inject_gp = 1;
- break;
- case MSR_TYPE_COUNTER: /* IA32_FIXED_CTR[0-2] */
- mask = ~((1ull << core2_get_bitwidth_fix_count()) - 1);
- if (msr_content & mask)
- inject_gp = 1;
- break;
- }
-
- if (inject_gp)
- {
- if ( is_hvm_domain(v->domain) )
- hvm_inject_hw_exception(TRAP_gp_fault, 0);
- else
- send_guest_trap(v->domain, v->vcpu_id, TRAP_gp_fault);
- }
- else
- wrmsrl(msr, msr_content);
- }
- else
- {
- if ( is_hvm_domain(v->domain) )
- vmx_write_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL, msr_content);
- else
- {
- wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, msr_content);
- core2_vpmu_cxt->global_ctrl = msr_content;
- }
- }
-
- return 1;
-}
-
-static int core2_vpmu_do_rdmsr(unsigned int msr, uint64_t *msr_content)
-{
- int type = -1, index = -1;
- struct vcpu *v = current;
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- struct core2_vpmu_context *core2_vpmu_cxt = NULL;
-
- if ( core2_vpmu_msr_common_check(msr, &type, &index) )
- {
- core2_vpmu_cxt = vpmu->context;
- switch ( msr )
- {
- case MSR_CORE_PERF_GLOBAL_OVF_CTRL:
- *msr_content = 0;
- break;
- case MSR_CORE_PERF_GLOBAL_STATUS:
- *msr_content = core2_vpmu_cxt->global_ovf_status;
- break;
- case MSR_CORE_PERF_GLOBAL_CTRL:
- if ( is_hvm_domain(v->domain) )
- vmx_read_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL, msr_content);
- else
- rdmsrl(MSR_CORE_PERF_GLOBAL_CTRL, *msr_content);
- break;
- default:
- rdmsrl(msr, *msr_content);
- }
- }
- else
- {
- /* Extension for BTS */
- if ( msr == MSR_IA32_MISC_ENABLE )
- {
- if ( vpmu_is_set(vpmu, VPMU_CPU_HAS_BTS) )
- *msr_content &= ~MSR_IA32_MISC_ENABLE_BTS_UNAVAIL;
- }
- else
- return 0;
- }
-
- return 1;
-}
-
-static void core2_vpmu_do_cpuid(unsigned int input,
- unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx)
-{
- if (input == 0x1)
- {
- struct vpmu_struct *vpmu = vcpu_vpmu(current);
-
- if ( vpmu_is_set(vpmu, VPMU_CPU_HAS_DS) )
- {
- /* Switch on the 'Debug Store' feature in CPUID.EAX[1]:EDX[21] */
- *edx |= cpufeat_mask(X86_FEATURE_DS);
- if ( cpu_has(¤t_cpu_data, X86_FEATURE_DTES64) )
- *ecx |= cpufeat_mask(X86_FEATURE_DTES64);
- if ( cpu_has(¤t_cpu_data, X86_FEATURE_DSCPL) )
- *ecx |= cpufeat_mask(X86_FEATURE_DSCPL);
- }
- }
-}
-
-/* Dump vpmu info on console, called in the context of keyhandler 'q'. */
-static void core2_vpmu_dump(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- int i;
- struct core2_vpmu_context *core2_vpmu_cxt = NULL;
- u64 val;
-
- if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
- return;
-
- if ( !vpmu_is_set(vpmu, VPMU_RUNNING) )
- {
- if ( vpmu_set(vpmu, VPMU_CONTEXT_LOADED) )
- printk(" vPMU loaded\n");
- else
- printk(" vPMU allocated\n");
- return;
- }
-
- printk(" vPMU running\n");
- core2_vpmu_cxt = vpmu->context;
-
- /* Print the contents of the counter and its configuration msr. */
- for ( i = 0; i < arch_pmc_cnt; i++ )
- {
- struct arch_msr_pair* msr_pair = core2_vpmu_cxt->arch_msr_pair;
- if ( core2_vpmu_cxt->pmu_enable->arch_pmc_enable[i] )
- printk(" general_%d: 0x%016lx ctrl: 0x%016lx\n",
- i, msr_pair[i].counter, msr_pair[i].control);
- }
- /*
- * The configuration of the fixed counter is 4 bits each in the
- * MSR_CORE_PERF_FIXED_CTR_CTRL.
- */
- val = core2_vpmu_cxt->ctrls[MSR_CORE_PERF_FIXED_CTR_CTRL_IDX];
- for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
- {
- if ( core2_vpmu_cxt->pmu_enable->fixed_ctr_enable[i] )
- printk(" fixed_%d: 0x%016lx ctrl: 0x%lx\n",
- i, core2_vpmu_cxt->fix_counters[i],
- val & FIXED_CTR_CTRL_MASK);
- val >>= FIXED_CTR_CTRL_BITS;
- }
-}
-
-static int core2_vpmu_do_interrupt(struct cpu_user_regs *regs)
-{
- struct vcpu *v = current;
- u64 msr_content;
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- struct core2_vpmu_context *core2_vpmu_cxt = vpmu->context;
-
- rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, msr_content);
- if ( msr_content )
- {
- if ( is_pmc_quirk )
- handle_pmc_quirk(msr_content);
- core2_vpmu_cxt->global_ovf_status |= msr_content;
- msr_content = 0xC000000700000000 | ((1 << arch_pmc_cnt) - 1);
- wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, msr_content);
- }
- else
- {
- /* No PMC overflow but perhaps a Trace Message interrupt. */
- msr_content = __vmread(GUEST_IA32_DEBUGCTL);
- if ( !(msr_content & IA32_DEBUGCTLMSR_TR) )
- return 0;
- }
-
- /* HW sets the MASK bit when performance counter interrupt occurs*/
- vpmu->hw_lapic_lvtpc = apic_read(APIC_LVTPC) & ~APIC_LVT_MASKED;
- apic_write_around(APIC_LVTPC, vpmu->hw_lapic_lvtpc);
-
- return 1;
-}
-
-static int core2_vpmu_initialise(struct vcpu *v, unsigned int vpmu_flags)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- u64 msr_content;
- struct cpuinfo_x86 *c = ¤t_cpu_data;
-
- if ( !(vpmu_flags & VPMU_INTEL_BTS) )
- goto func_out;
- /* Check the 'Debug Store' feature in the CPUID.EAX[1]:EDX[21] */
- if ( cpu_has(c, X86_FEATURE_DS) )
- {
- if ( !cpu_has(c, X86_FEATURE_DTES64) )
- {
- printk(XENLOG_G_WARNING "CPU doesn't support 64-bit DS Area"
- " - Debug Store disabled for d%d:v%d\n",
- v->domain->domain_id, v->vcpu_id);
- goto func_out;
- }
- vpmu_set(vpmu, VPMU_CPU_HAS_DS);
- rdmsrl(MSR_IA32_MISC_ENABLE, msr_content);
- if ( msr_content & MSR_IA32_MISC_ENABLE_BTS_UNAVAIL )
- {
- /* If BTS_UNAVAIL is set reset the DS feature. */
- vpmu_reset(vpmu, VPMU_CPU_HAS_DS);
- printk(XENLOG_G_WARNING "CPU has set BTS_UNAVAIL"
- " - Debug Store disabled for d%d:v%d\n",
- v->domain->domain_id, v->vcpu_id);
- }
- else
- {
- vpmu_set(vpmu, VPMU_CPU_HAS_BTS);
- if ( !cpu_has(c, X86_FEATURE_DSCPL) )
- printk(XENLOG_G_INFO
- "vpmu: CPU doesn't support CPL-Qualified BTS\n");
- printk("******************************************************\n");
- printk("** WARNING: Emulation of BTS Feature is switched on **\n");
- printk("** Using this processor feature in a virtualized **\n");
- printk("** environment is not 100%% safe.
**\n");
- printk("** Setting the DS buffer address with wrong values **\n");
- printk("** may lead to hypervisor hangs or crashes. **\n");
- printk("** It is NOT recommended for production use! **\n");
- printk("******************************************************\n");
- }
- }
-func_out:
-
- arch_pmc_cnt = core2_get_pmc_count();
- check_pmc_quirk();
-
- /* PV domains can allocate resources immediately */
- if ( !is_hvm_domain(v->domain) )
- if ( !core2_vpmu_alloc_resource(v) )
- return 1;
-
- return 0;
-}
-
-static void core2_vpmu_destroy(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- struct core2_vpmu_context *core2_vpmu_cxt = vpmu->context;
-
- if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
- return;
-
- if ( is_hvm_domain(v->domain) )
- {
- xfree(core2_vpmu_cxt->pmu_enable);
- xfree(vpmu->context);
- if ( cpu_has_vmx_msr_bitmap )
- core2_vpmu_unset_msr_bitmap(v->arch.hvm_vmx.msr_bitmap);
- }
-
- release_pmu_ownship(PMU_OWNER_HVM);
- vpmu_clear(vpmu);
-}
-
-struct arch_vpmu_ops core2_vpmu_ops = {
- .do_wrmsr = core2_vpmu_do_wrmsr,
- .do_rdmsr = core2_vpmu_do_rdmsr,
- .do_interrupt = core2_vpmu_do_interrupt,
- .do_cpuid = core2_vpmu_do_cpuid,
- .arch_vpmu_destroy = core2_vpmu_destroy,
- .arch_vpmu_save = core2_vpmu_save,
- .arch_vpmu_load = core2_vpmu_load,
- .arch_vpmu_dump = core2_vpmu_dump
-};
-
-static void core2_no_vpmu_do_cpuid(unsigned int input,
- unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx)
-{
- /*
- * As in this case the vpmu is not enabled reset some bits in the
- * architectural performance monitoring related part.
- */
- if ( input == 0xa )
- {
- *eax &= ~PMU_VERSION_MASK;
- *eax &= ~PMU_GENERAL_NR_MASK;
- *eax &= ~PMU_GENERAL_WIDTH_MASK;
-
- *edx &= ~PMU_FIXED_NR_MASK;
- *edx &= ~PMU_FIXED_WIDTH_MASK;
- }
-}
-
-/*
- * If its a vpmu msr set it to 0.
- */
-static int core2_no_vpmu_do_rdmsr(unsigned int msr, uint64_t *msr_content)
-{
- int type = -1, index = -1;
- if ( !is_core2_vpmu_msr(msr, &type, &index) )
- return 0;
- *msr_content = 0;
- return 1;
-}
-
-/*
- * These functions are used in case vpmu is not enabled.
- */
-struct arch_vpmu_ops core2_no_vpmu_ops = {
- .do_rdmsr = core2_no_vpmu_do_rdmsr,
- .do_cpuid = core2_no_vpmu_do_cpuid,
-};
-
-int vmx_vpmu_initialise(struct vcpu *v, unsigned int vpmu_flags)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- uint8_t family = current_cpu_data.x86;
- uint8_t cpu_model = current_cpu_data.x86_model;
- int ret = 0;
-
- vpmu->arch_vpmu_ops = &core2_no_vpmu_ops;
- if ( vpmu_flags == VPMU_OFF )
- return 0;
-
- if ( family == 6 )
- {
- switch ( cpu_model )
- {
- /* Core2: */
- case 0x0f: /* original 65 nm celeron/pentium/core2/xeon,
"Merom"/"Conroe" */
- case 0x16: /* single-core 65 nm celeron/core2solo "Merom-L"/"Conroe-L"
*/
- case 0x17: /* 45 nm celeron/core2/xeon "Penryn"/"Wolfdale" */
- case 0x1d: /* six-core 45 nm xeon "Dunnington" */
-
- case 0x2a: /* SandyBridge */
- case 0x2d: /* SandyBridge, "Romley-EP" */
-
- /* Nehalem: */
- case 0x1a: /* 45 nm nehalem, "Bloomfield" */
- case 0x1e: /* 45 nm nehalem, "Lynnfield", "Clarksfield", "Jasper
Forest" */
- case 0x2e: /* 45 nm nehalem-ex, "Beckton" */
-
- /* Westmere: */
- case 0x25: /* 32 nm nehalem, "Clarkdale", "Arrandale" */
- case 0x2c: /* 32 nm nehalem, "Gulftown", "Westmere-EP" */
- case 0x27: /* 32 nm Westmere-EX */
-
- case 0x3a: /* IvyBridge */
- case 0x3e: /* IvyBridge EP */
- case 0x3c: /* Haswell */
- ret = core2_vpmu_initialise(v, vpmu_flags);
- if ( !ret )
- vpmu->arch_vpmu_ops = &core2_vpmu_ops;
- return ret;
- }
- }
-
- printk("VPMU: Initialization failed. "
- "Intel processor family %d model %d has not "
- "been supported\n", family, cpu_model);
- return -EINVAL;
-}
-
diff --git a/xen/arch/x86/hvm/vpmu.c b/xen/arch/x86/hvm/vpmu.c
deleted file mode 100644
index f28b7af..0000000
--- a/xen/arch/x86/hvm/vpmu.c
+++ /dev/null
@@ -1,545 +0,0 @@
-/*
- * vpmu.c: PMU virtualization for HVM domain.
- *
- * Copyright (c) 2007, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- * Author: Haitao Shan <haitao.shan@xxxxxxxxx>
- */
-#include <xen/config.h>
-#include <xen/sched.h>
-#include <xen/xenoprof.h>
-#include <xen/event.h>
-#include <xen/softirq.h>
-#include <xen/hypercall.h>
-#include <xen/guest_access.h>
-#include <asm/regs.h>
-#include <asm/types.h>
-#include <asm/msr.h>
-#include <asm/hvm/support.h>
-#include <asm/hvm/vmx/vmx.h>
-#include <asm/hvm/vmx/vmcs.h>
-#include <asm/hvm/vpmu.h>
-#include <asm/hvm/svm/svm.h>
-#include <asm/hvm/svm/vmcb.h>
-#include <asm/apic.h>
-#include <asm/nmi.h>
-#include <public/xenpmu.h>
-
-/*
- * "vpmu" : vpmu generally enabled
- * "vpmu=off" : vpmu generally disabled
- * "vpmu=bts" : vpmu enabled and Intel BTS feature switched on.
- */
-uint32_t __read_mostly vpmu_mode = VPMU_OFF;
-static void parse_vpmu_param(char *s);
-custom_param("vpmu", parse_vpmu_param);
-
-static void vpmu_save_force(void *arg);
-static DEFINE_PER_CPU(struct vcpu *, last_vcpu);
-
-static void __init parse_vpmu_param(char *s)
-{
- switch ( parse_bool(s) )
- {
- case 0:
- break;
- default:
- if ( !strcmp(s, "bts") )
- vpmu_mode |= VPMU_INTEL_BTS;
- else if ( *s )
- {
- printk("VPMU: unknown flag: %s - vpmu disabled!\n", s);
- break;
- }
- /* fall through */
- case 1:
- vpmu_mode |= VPMU_ON;
- break;
- }
-}
-
-static void vpmu_lvtpc_update(uint32_t val)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(current);
-
- vpmu->hw_lapic_lvtpc = APIC_DM_NMI | (val & APIC_LVT_MASKED);
- apic_write(APIC_LVTPC, vpmu->hw_lapic_lvtpc);
-}
-
-int vpmu_do_wrmsr(unsigned int msr, uint64_t msr_content)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(current);
-
- if ( (vpmu_mode & VPMU_PRIV) && (current->domain != dom0) )
- return 0;
-
- if ( vpmu->arch_vpmu_ops && vpmu->arch_vpmu_ops->do_wrmsr )
- return vpmu->arch_vpmu_ops->do_wrmsr(msr, msr_content);
- return 0;
-}
-
-int vpmu_do_rdmsr(unsigned int msr, uint64_t *msr_content)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(current);
-
- if ( vpmu_mode & VPMU_PRIV && current->domain != dom0 )
- return 0;
-
- if ( vpmu->arch_vpmu_ops && vpmu->arch_vpmu_ops->do_rdmsr )
- return vpmu->arch_vpmu_ops->do_rdmsr(msr, msr_content);
- return 0;
-}
-
-int vpmu_do_interrupt(struct cpu_user_regs *regs)
-{
- struct vcpu *v = current;
- struct vpmu_struct *vpmu;
-
-
- /* dom0 will handle this interrupt */
- if ( (vpmu_mode & VPMU_PRIV) ||
- (v->domain->domain_id >= DOMID_FIRST_RESERVED) )
- {
- if ( smp_processor_id() >= dom0->max_vcpus )
- return 0;
- v = dom0->vcpu[smp_processor_id()];
- }
-
- vpmu = vcpu_vpmu(v);
- if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
- return 0;
-
- if ( !is_hvm_domain(v->domain) || vpmu_mode & VPMU_PRIV )
- {
- /* PV guest or dom0 is doing system profiling */
- void *p;
- struct cpu_user_regs *gregs;
-
- p = v->arch.vpmu.xenpmu_data;
-
- /* PV guest will be reading PMU MSRs from xenpmu_data */
- vpmu_save_force(v);
-
- /* Store appropriate registers in xenpmu_data
- *
- * Note: '!current->is_running' is possible when 'set_current(next)'
- * for the (HVM) guest has been called but 'reset_stack_and_jump()'
- * has not (i.e. the guest is not actually running yet).
- */
- if ( !is_hvm_domain(current->domain) ||
- ((vpmu_mode & VPMU_PRIV) && !current->is_running) )
- {
- /*
- * 32-bit dom0 cannot process Xen's addresses (which are 64 bit)
- * and therefore we treat it the same way as a non-priviledged
- * PV 32-bit domain.
- */
- if ( is_pv_32bit_domain(current->domain) )
- {
- struct compat_cpu_user_regs cmp;
-
- gregs = guest_cpu_user_regs();
- XLAT_cpu_user_regs(&cmp, gregs);
- memcpy(p, &cmp, sizeof(struct compat_cpu_user_regs));
- }
- else if ( (current->domain != dom0) && !is_idle_vcpu(current) &&
- !(vpmu_mode & VPMU_PRIV) )
- {
- /* PV guest */
- gregs = guest_cpu_user_regs();
- memcpy(p, gregs, sizeof(struct cpu_user_regs));
- }
- else
- memcpy(p, regs, sizeof(struct cpu_user_regs));
- }
- else
- {
- /* HVM guest */
- struct segment_register cs;
-
- gregs = guest_cpu_user_regs();
- hvm_get_segment_register(current, x86_seg_cs, &cs);
- gregs->cs = cs.attr.fields.dpl;
-
- memcpy(p, gregs, sizeof(struct cpu_user_regs));
- }
-
- v->arch.vpmu.xenpmu_data->domain_id = current->domain->domain_id;
- v->arch.vpmu.xenpmu_data->vcpu_id = current->vcpu_id;
-
- raise_softirq(PMU_SOFTIRQ);
- vpmu_set(vpmu, VPMU_WAIT_FOR_FLUSH);
-
- return 1;
- }
- else if ( vpmu->arch_vpmu_ops )
- {
- /* HVM guest */
- struct vlapic *vlapic;
- u32 vlapic_lvtpc;
- unsigned char int_vec;
-
- if ( !vpmu->arch_vpmu_ops->do_interrupt(regs) )
- return 0;
-
- vlapic = vcpu_vlapic(v);
- if ( !is_vlapic_lvtpc_enabled(vlapic) )
- return 1;
-
- vlapic_lvtpc = vlapic_get_reg(vlapic, APIC_LVTPC);
- int_vec = vlapic_lvtpc & APIC_VECTOR_MASK;
-
- if ( GET_APIC_DELIVERY_MODE(vlapic_lvtpc) == APIC_MODE_FIXED )
- vlapic_set_irq(vcpu_vlapic(v), int_vec, 0);
- else
- v->nmi_pending = 1;
- return 1;
- }
-
- return 0;
-}
-
-void vpmu_do_cpuid(unsigned int input,
- unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(current);
-
- if ( vpmu->arch_vpmu_ops && vpmu->arch_vpmu_ops->do_cpuid )
- vpmu->arch_vpmu_ops->do_cpuid(input, eax, ebx, ecx, edx);
-}
-
-static void vpmu_save_force(void *arg)
-{
- struct vcpu *v = (struct vcpu *)arg;
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
-
- if ( !vpmu_is_set_all(vpmu, VPMU_CONTEXT_ALLOCATED | VPMU_CONTEXT_LOADED) )
- return;
-
- vpmu_set(vpmu, VPMU_CONTEXT_SAVE);
-
- if ( vpmu->arch_vpmu_ops )
- (void)vpmu->arch_vpmu_ops->arch_vpmu_save(v);
-
- vpmu_reset(vpmu, VPMU_CONTEXT_SAVE | VPMU_CONTEXT_LOADED);
-
- per_cpu(last_vcpu, smp_processor_id()) = NULL;
-}
-
-void vpmu_save(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- int pcpu = smp_processor_id();
-
- if ( !vpmu_is_set_all(vpmu, VPMU_CONTEXT_ALLOCATED | VPMU_CONTEXT_LOADED) )
- return;
-
- vpmu->last_pcpu = pcpu;
- per_cpu(last_vcpu, pcpu) = v;
-
- if ( vpmu->arch_vpmu_ops )
- if ( vpmu->arch_vpmu_ops->arch_vpmu_save(v) )
- vpmu_reset(vpmu, VPMU_CONTEXT_LOADED);
-
- apic_write(APIC_LVTPC, APIC_DM_NMI | APIC_LVT_MASKED);
-}
-
-void vpmu_load(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- int pcpu = smp_processor_id();
- struct vcpu *prev = NULL;
-
- if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
- return;
-
- /* First time this VCPU is running here */
- if ( vpmu->last_pcpu != pcpu )
- {
- /*
- * Get the context from last pcpu that we ran on. Note that if another
- * VCPU is running there it must have saved this VPCU's context before
- * startig to run (see below).
- * There should be no race since remote pcpu will disable interrupts
- * before saving the context.
- */
- if ( vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED) )
- on_selected_cpus(cpumask_of(vpmu->last_pcpu),
- vpmu_save_force, (void *)v, 1);
- }
-
- /* Prevent forced context save from remote CPU */
- local_irq_disable();
-
- prev = per_cpu(last_vcpu, pcpu);
-
- if ( prev != v && prev )
- {
- vpmu = vcpu_vpmu(prev);
-
- /* Someone ran here before us */
- vpmu_save_force(prev);
-
- vpmu = vcpu_vpmu(v);
- }
-
- local_irq_enable();
-
- /* Only when PMU is counting, we load PMU context immediately. */
- if ( !vpmu_is_set(vpmu, VPMU_RUNNING) )
- return;
-
- if ( vpmu->arch_vpmu_ops && vpmu->arch_vpmu_ops->arch_vpmu_load )
- {
- apic_write_around(APIC_LVTPC, vpmu->hw_lapic_lvtpc);
- vpmu->arch_vpmu_ops->arch_vpmu_load(v);
- }
-
- /*
- * PMU interrupt may happen while loading the context above. That
- * may cause vpmu_save_force() in the handler so we we don't
- * want to mark the context as loaded.
- */
- if ( !vpmu_is_set(vpmu, VPMU_WAIT_FOR_FLUSH) )
- vpmu_set(vpmu, VPMU_CONTEXT_LOADED);
-}
-
-void vpmu_initialise(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
- uint8_t vendor = current_cpu_data.x86_vendor;
-
- if ( vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
- vpmu_destroy(v);
- vpmu_clear(vpmu);
- vpmu->context = NULL;
-
- switch ( vendor )
- {
- case X86_VENDOR_AMD:
- if ( svm_vpmu_initialise(v, vpmu_mode) != 0 )
- vpmu_mode = VPMU_OFF;
- break;
-
- case X86_VENDOR_INTEL:
- if ( vmx_vpmu_initialise(v, vpmu_mode) != 0 )
- vpmu_mode = VPMU_OFF;
- break;
-
- default:
- printk("VPMU: Initialization failed. "
- "Unknown CPU vendor %d\n", vendor);
- vpmu_mode = VPMU_OFF;
- break;
- }
-}
-
-void vpmu_destroy(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
-
- if ( vpmu->arch_vpmu_ops && vpmu->arch_vpmu_ops->arch_vpmu_destroy )
- {
- /* Unload VPMU first. This will stop counters from running */
- on_selected_cpus(cpumask_of(vcpu_vpmu(v)->last_pcpu),
- vpmu_save_force, (void *)v, 1);
-
- vpmu->arch_vpmu_ops->arch_vpmu_destroy(v);
- }
-}
-
-/* Dump some vpmu informations on console. Used in keyhandler dump_domains().
*/
-void vpmu_dump(struct vcpu *v)
-{
- struct vpmu_struct *vpmu = vcpu_vpmu(v);
-
- if ( vpmu->arch_vpmu_ops && vpmu->arch_vpmu_ops->arch_vpmu_dump )
- vpmu->arch_vpmu_ops->arch_vpmu_dump(v);
-}
-
-int pmu_nmi_interrupt(struct cpu_user_regs *regs, int cpu)
-{
- return vpmu_do_interrupt(regs);
-}
-
-/* Process the softirq set by PMU NMI handler */
-void pmu_virq(void)
-{
- struct vcpu *v = current;
-
- if ( (vpmu_mode & VPMU_PRIV) ||
- (v->domain->domain_id >= DOMID_FIRST_RESERVED) )
- {
- if ( smp_processor_id() >= dom0->max_vcpus )
- {
- printk(KERN_WARNING "PMU softirq on unexpected processor %d\n",
- smp_processor_id());
- return;
- }
- v = dom0->vcpu[smp_processor_id()];
- }
-
- send_guest_vcpu_virq(v, VIRQ_XENPMU);
-}
-
-static int pvpmu_init(struct domain *d, xenpmu_params_t *params)
-{
- struct vcpu *v;
- static int pvpmu_initted = 0;
-
- if ( params->vcpu < 0 || params->vcpu >= d->max_vcpus )
- return -EINVAL;
-
- if ( !pvpmu_initted )
- {
- if (reserve_lapic_nmi() == 0)
- set_nmi_callback(pmu_nmi_interrupt);
- else
- {
- printk("Failed to reserve PMU NMI\n");
- return -EBUSY;
- }
- open_softirq(PMU_SOFTIRQ, pmu_virq);
- pvpmu_initted = 1;
- }
-
- if ( !mfn_valid(params->mfn) ||
- !get_page_and_type(mfn_to_page(params->mfn), d, PGT_writable_page) )
- return -EINVAL;
-
- v = d->vcpu[params->vcpu];
- v->arch.vpmu.xenpmu_data = map_domain_page_global(params->mfn);
- memset(v->arch.vpmu.xenpmu_data, 0, PAGE_SIZE);
-
- vpmu_initialise(v);
-
- return 0;
-}
-
-static void pvpmu_finish(struct domain *d, xenpmu_params_t *params)
-{
- struct vcpu *v;
- uint64_t mfn;
-
- if ( params->vcpu < 0 || params->vcpu >= d->max_vcpus )
- return;
-
- v = d->vcpu[params->vcpu];
- if (v != current)
- vcpu_pause(v);
-
- if ( v->arch.vpmu.xenpmu_data )
- {
- mfn = domain_page_map_to_mfn(v->arch.vpmu.xenpmu_data);
- if ( mfn_valid(mfn) )
- {
- unmap_domain_page_global(v->arch.vpmu.xenpmu_data);
- put_page_and_type(mfn_to_page(mfn));
- }
- }
- vpmu_destroy(v);
-
- if (v != current)
- vcpu_unpause(v);
-}
-
-long do_xenpmu_op(int op, XEN_GUEST_HANDLE_PARAM(void) arg)
-{
- int ret = -EINVAL;
- xenpmu_params_t pmu_params;
- uint32_t mode, flags;
-
- switch ( op )
- {
- case XENPMU_mode_set:
- if ( !is_control_domain(current->domain) )
- return -EPERM;
-
- if ( copy_from_guest(&pmu_params, arg, 1) )
- return -EFAULT;
-
- mode = (uint32_t)pmu_params.control & VPMU_MODE_MASK;
- if ( (mode & ~(VPMU_ON | VPMU_PRIV)) ||
- ((mode & VPMU_ON) && (mode & VPMU_PRIV)) )
- return -EINVAL;
-
- vpmu_mode &= ~VPMU_MODE_MASK;
- vpmu_mode |= mode;
-
- ret = 0;
- break;
-
- case XENPMU_mode_get:
- pmu_params.control = vpmu_mode & VPMU_MODE_MASK;
- if ( copy_to_guest(arg, &pmu_params, 1) )
- return -EFAULT;
- ret = 0;
- break;
-
- case XENPMU_flags_set:
- if ( !is_control_domain(current->domain) )
- return -EPERM;
-
- if ( copy_from_guest(&pmu_params, arg, 1) )
- return -EFAULT;
-
- flags = (uint64_t)pmu_params.control & VPMU_FLAGS_MASK;
- if ( flags & ~VPMU_INTEL_BTS )
- return -EINVAL;
-
- vpmu_mode &= ~VPMU_FLAGS_MASK;
- vpmu_mode |= flags;
-
- ret = 0;
- break;
-
- case XENPMU_flags_get:
- pmu_params.control = vpmu_mode & VPMU_FLAGS_MASK;
- if ( copy_to_guest(arg, &pmu_params, 1) )
- return -EFAULT;
- ret = 0;
- break;
-
- case XENPMU_init:
- if ( copy_from_guest(&pmu_params, arg, 1) )
- return -EFAULT;
- ret = pvpmu_init(current->domain, &pmu_params);
- break;
-
- case XENPMU_finish:
- if ( copy_from_guest(&pmu_params, arg, 1) )
- return -EFAULT;
- pvpmu_finish(current->domain, &pmu_params);
- break;
-
- case XENPMU_lvtpc_set:
- if ( copy_from_guest(&pmu_params, arg, 1) )
- return -EFAULT;
-
- vpmu_lvtpc_update((uint32_t)pmu_params.lvtpc);
- ret = 0;
- break;
-
- case XENPMU_flush:
- vpmu_reset(vcpu_vpmu(current), VPMU_WAIT_FOR_FLUSH);
- vpmu_load(current);
- ret = 0;
- break;
- }
-
- return ret;
-}
diff --git a/xen/arch/x86/oprofile/op_model_ppro.c
b/xen/arch/x86/oprofile/op_model_ppro.c
index 2939a40..9135801 100644
--- a/xen/arch/x86/oprofile/op_model_ppro.c
+++ b/xen/arch/x86/oprofile/op_model_ppro.c
@@ -19,7 +19,7 @@
#include <asm/processor.h>
#include <asm/regs.h>
#include <asm/current.h>
-#include <asm/hvm/vpmu.h>
+#include <asm/vpmu.h>
#include "op_x86_model.h"
#include "op_counter.h"
diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c
index 64c9c25..bca0a37 100644
--- a/xen/arch/x86/traps.c
+++ b/xen/arch/x86/traps.c
@@ -71,7 +71,7 @@
#include <asm/apic.h>
#include <asm/mc146818rtc.h>
#include <asm/hpet.h>
-#include <asm/hvm/vpmu.h>
+#include <asm/vpmu.h>
#include <public/arch-x86/cpuid.h>
#include <xsm/xsm.h>
diff --git a/xen/arch/x86/vpmu.c b/xen/arch/x86/vpmu.c
new file mode 100644
index 0000000..3f24903
--- /dev/null
+++ b/xen/arch/x86/vpmu.c
@@ -0,0 +1,545 @@
+/*
+ * vpmu.c: PMU virtualization for HVM domain.
+ *
+ * Copyright (c) 2007, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Author: Haitao Shan <haitao.shan@xxxxxxxxx>
+ */
+#include <xen/config.h>
+#include <xen/sched.h>
+#include <xen/xenoprof.h>
+#include <xen/event.h>
+#include <xen/softirq.h>
+#include <xen/hypercall.h>
+#include <xen/guest_access.h>
+#include <asm/regs.h>
+#include <asm/types.h>
+#include <asm/msr.h>
+#include <asm/hvm/support.h>
+#include <asm/hvm/vmx/vmx.h>
+#include <asm/hvm/vmx/vmcs.h>
+#include <asm/vpmu.h>
+#include <asm/hvm/svm/svm.h>
+#include <asm/hvm/svm/vmcb.h>
+#include <asm/apic.h>
+#include <asm/nmi.h>
+#include <public/xenpmu.h>
+
+/*
+ * "vpmu" : vpmu generally enabled
+ * "vpmu=off" : vpmu generally disabled
+ * "vpmu=bts" : vpmu enabled and Intel BTS feature switched on.
+ */
+uint32_t __read_mostly vpmu_mode = VPMU_OFF;
+static void parse_vpmu_param(char *s);
+custom_param("vpmu", parse_vpmu_param);
+
+static void vpmu_save_force(void *arg);
+static DEFINE_PER_CPU(struct vcpu *, last_vcpu);
+
+static void __init parse_vpmu_param(char *s)
+{
+ switch ( parse_bool(s) )
+ {
+ case 0:
+ break;
+ default:
+ if ( !strcmp(s, "bts") )
+ vpmu_mode |= VPMU_INTEL_BTS;
+ else if ( *s )
+ {
+ printk("VPMU: unknown flag: %s - vpmu disabled!\n", s);
+ break;
+ }
+ /* fall through */
+ case 1:
+ vpmu_mode |= VPMU_ON;
+ break;
+ }
+}
+
+static void vpmu_lvtpc_update(uint32_t val)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(current);
+
+ vpmu->hw_lapic_lvtpc = APIC_DM_NMI | (val & APIC_LVT_MASKED);
+ apic_write(APIC_LVTPC, vpmu->hw_lapic_lvtpc);
+}
+
+int vpmu_do_wrmsr(unsigned int msr, uint64_t msr_content)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(current);
+
+ if ( (vpmu_mode & VPMU_PRIV) && (current->domain != dom0) )
+ return 0;
+
+ if ( vpmu->arch_vpmu_ops && vpmu->arch_vpmu_ops->do_wrmsr )
+ return vpmu->arch_vpmu_ops->do_wrmsr(msr, msr_content);
+ return 0;
+}
+
+int vpmu_do_rdmsr(unsigned int msr, uint64_t *msr_content)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(current);
+
+ if ( vpmu_mode & VPMU_PRIV && current->domain != dom0 )
+ return 0;
+
+ if ( vpmu->arch_vpmu_ops && vpmu->arch_vpmu_ops->do_rdmsr )
+ return vpmu->arch_vpmu_ops->do_rdmsr(msr, msr_content);
+ return 0;
+}
+
+int vpmu_do_interrupt(struct cpu_user_regs *regs)
+{
+ struct vcpu *v = current;
+ struct vpmu_struct *vpmu;
+
+
+ /* dom0 will handle this interrupt */
+ if ( (vpmu_mode & VPMU_PRIV) ||
+ (v->domain->domain_id >= DOMID_FIRST_RESERVED) )
+ {
+ if ( smp_processor_id() >= dom0->max_vcpus )
+ return 0;
+ v = dom0->vcpu[smp_processor_id()];
+ }
+
+ vpmu = vcpu_vpmu(v);
+ if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
+ return 0;
+
+ if ( !is_hvm_domain(v->domain) || vpmu_mode & VPMU_PRIV )
+ {
+ /* PV guest or dom0 is doing system profiling */
+ void *p;
+ struct cpu_user_regs *gregs;
+
+ p = v->arch.vpmu.xenpmu_data;
+
+ /* PV guest will be reading PMU MSRs from xenpmu_data */
+ vpmu_save_force(v);
+
+ /* Store appropriate registers in xenpmu_data
+ *
+ * Note: '!current->is_running' is possible when 'set_current(next)'
+ * for the (HVM) guest has been called but 'reset_stack_and_jump()'
+ * has not (i.e. the guest is not actually running yet).
+ */
+ if ( !is_hvm_domain(current->domain) ||
+ ((vpmu_mode & VPMU_PRIV) && !current->is_running) )
+ {
+ /*
+ * 32-bit dom0 cannot process Xen's addresses (which are 64 bit)
+ * and therefore we treat it the same way as a non-priviledged
+ * PV 32-bit domain.
+ */
+ if ( is_pv_32bit_domain(current->domain) )
+ {
+ struct compat_cpu_user_regs cmp;
+
+ gregs = guest_cpu_user_regs();
+ XLAT_cpu_user_regs(&cmp, gregs);
+ memcpy(p, &cmp, sizeof(struct compat_cpu_user_regs));
+ }
+ else if ( (current->domain != dom0) && !is_idle_vcpu(current) &&
+ !(vpmu_mode & VPMU_PRIV) )
+ {
+ /* PV guest */
+ gregs = guest_cpu_user_regs();
+ memcpy(p, gregs, sizeof(struct cpu_user_regs));
+ }
+ else
+ memcpy(p, regs, sizeof(struct cpu_user_regs));
+ }
+ else
+ {
+ /* HVM guest */
+ struct segment_register cs;
+
+ gregs = guest_cpu_user_regs();
+ hvm_get_segment_register(current, x86_seg_cs, &cs);
+ gregs->cs = cs.attr.fields.dpl;
+
+ memcpy(p, gregs, sizeof(struct cpu_user_regs));
+ }
+
+ v->arch.vpmu.xenpmu_data->domain_id = current->domain->domain_id;
+ v->arch.vpmu.xenpmu_data->vcpu_id = current->vcpu_id;
+
+ raise_softirq(PMU_SOFTIRQ);
+ vpmu_set(vpmu, VPMU_WAIT_FOR_FLUSH);
+
+ return 1;
+ }
+ else if ( vpmu->arch_vpmu_ops )
+ {
+ /* HVM guest */
+ struct vlapic *vlapic;
+ u32 vlapic_lvtpc;
+ unsigned char int_vec;
+
+ if ( !vpmu->arch_vpmu_ops->do_interrupt(regs) )
+ return 0;
+
+ vlapic = vcpu_vlapic(v);
+ if ( !is_vlapic_lvtpc_enabled(vlapic) )
+ return 1;
+
+ vlapic_lvtpc = vlapic_get_reg(vlapic, APIC_LVTPC);
+ int_vec = vlapic_lvtpc & APIC_VECTOR_MASK;
+
+ if ( GET_APIC_DELIVERY_MODE(vlapic_lvtpc) == APIC_MODE_FIXED )
+ vlapic_set_irq(vcpu_vlapic(v), int_vec, 0);
+ else
+ v->nmi_pending = 1;
+ return 1;
+ }
+
+ return 0;
+}
+
+void vpmu_do_cpuid(unsigned int input,
+ unsigned int *eax, unsigned int *ebx,
+ unsigned int *ecx, unsigned int *edx)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(current);
+
+ if ( vpmu->arch_vpmu_ops && vpmu->arch_vpmu_ops->do_cpuid )
+ vpmu->arch_vpmu_ops->do_cpuid(input, eax, ebx, ecx, edx);
+}
+
+static void vpmu_save_force(void *arg)
+{
+ struct vcpu *v = (struct vcpu *)arg;
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+
+ if ( !vpmu_is_set_all(vpmu, VPMU_CONTEXT_ALLOCATED | VPMU_CONTEXT_LOADED) )
+ return;
+
+ vpmu_set(vpmu, VPMU_CONTEXT_SAVE);
+
+ if ( vpmu->arch_vpmu_ops )
+ (void)vpmu->arch_vpmu_ops->arch_vpmu_save(v);
+
+ vpmu_reset(vpmu, VPMU_CONTEXT_SAVE | VPMU_CONTEXT_LOADED);
+
+ per_cpu(last_vcpu, smp_processor_id()) = NULL;
+}
+
+void vpmu_save(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ int pcpu = smp_processor_id();
+
+ if ( !vpmu_is_set_all(vpmu, VPMU_CONTEXT_ALLOCATED | VPMU_CONTEXT_LOADED) )
+ return;
+
+ vpmu->last_pcpu = pcpu;
+ per_cpu(last_vcpu, pcpu) = v;
+
+ if ( vpmu->arch_vpmu_ops )
+ if ( vpmu->arch_vpmu_ops->arch_vpmu_save(v) )
+ vpmu_reset(vpmu, VPMU_CONTEXT_LOADED);
+
+ apic_write(APIC_LVTPC, APIC_DM_NMI | APIC_LVT_MASKED);
+}
+
+void vpmu_load(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ int pcpu = smp_processor_id();
+ struct vcpu *prev = NULL;
+
+ if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
+ return;
+
+ /* First time this VCPU is running here */
+ if ( vpmu->last_pcpu != pcpu )
+ {
+ /*
+ * Get the context from last pcpu that we ran on. Note that if another
+ * VCPU is running there it must have saved this VPCU's context before
+ * startig to run (see below).
+ * There should be no race since remote pcpu will disable interrupts
+ * before saving the context.
+ */
+ if ( vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED) )
+ on_selected_cpus(cpumask_of(vpmu->last_pcpu),
+ vpmu_save_force, (void *)v, 1);
+ }
+
+ /* Prevent forced context save from remote CPU */
+ local_irq_disable();
+
+ prev = per_cpu(last_vcpu, pcpu);
+
+ if ( prev != v && prev )
+ {
+ vpmu = vcpu_vpmu(prev);
+
+ /* Someone ran here before us */
+ vpmu_save_force(prev);
+
+ vpmu = vcpu_vpmu(v);
+ }
+
+ local_irq_enable();
+
+ /* Only when PMU is counting, we load PMU context immediately. */
+ if ( !vpmu_is_set(vpmu, VPMU_RUNNING) )
+ return;
+
+ if ( vpmu->arch_vpmu_ops && vpmu->arch_vpmu_ops->arch_vpmu_load )
+ {
+ apic_write_around(APIC_LVTPC, vpmu->hw_lapic_lvtpc);
+ vpmu->arch_vpmu_ops->arch_vpmu_load(v);
+ }
+
+ /*
+ * PMU interrupt may happen while loading the context above. That
+ * may cause vpmu_save_force() in the handler so we we don't
+ * want to mark the context as loaded.
+ */
+ if ( !vpmu_is_set(vpmu, VPMU_WAIT_FOR_FLUSH) )
+ vpmu_set(vpmu, VPMU_CONTEXT_LOADED);
+}
+
+void vpmu_initialise(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ uint8_t vendor = current_cpu_data.x86_vendor;
+
+ if ( vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
+ vpmu_destroy(v);
+ vpmu_clear(vpmu);
+ vpmu->context = NULL;
+
+ switch ( vendor )
+ {
+ case X86_VENDOR_AMD:
+ if ( svm_vpmu_initialise(v, vpmu_mode) != 0 )
+ vpmu_mode = VPMU_OFF;
+ break;
+
+ case X86_VENDOR_INTEL:
+ if ( vmx_vpmu_initialise(v, vpmu_mode) != 0 )
+ vpmu_mode = VPMU_OFF;
+ break;
+
+ default:
+ printk("VPMU: Initialization failed. "
+ "Unknown CPU vendor %d\n", vendor);
+ vpmu_mode = VPMU_OFF;
+ break;
+ }
+}
+
+void vpmu_destroy(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+
+ if ( vpmu->arch_vpmu_ops && vpmu->arch_vpmu_ops->arch_vpmu_destroy )
+ {
+ /* Unload VPMU first. This will stop counters from running */
+ on_selected_cpus(cpumask_of(vcpu_vpmu(v)->last_pcpu),
+ vpmu_save_force, (void *)v, 1);
+
+ vpmu->arch_vpmu_ops->arch_vpmu_destroy(v);
+ }
+}
+
+/* Dump some vpmu informations on console. Used in keyhandler dump_domains().
*/
+void vpmu_dump(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+
+ if ( vpmu->arch_vpmu_ops && vpmu->arch_vpmu_ops->arch_vpmu_dump )
+ vpmu->arch_vpmu_ops->arch_vpmu_dump(v);
+}
+
+int pmu_nmi_interrupt(struct cpu_user_regs *regs, int cpu)
+{
+ return vpmu_do_interrupt(regs);
+}
+
+/* Process the softirq set by PMU NMI handler */
+void pmu_virq(void)
+{
+ struct vcpu *v = current;
+
+ if ( (vpmu_mode & VPMU_PRIV) ||
+ (v->domain->domain_id >= DOMID_FIRST_RESERVED) )
+ {
+ if ( smp_processor_id() >= dom0->max_vcpus )
+ {
+ printk(KERN_WARNING "PMU softirq on unexpected processor %d\n",
+ smp_processor_id());
+ return;
+ }
+ v = dom0->vcpu[smp_processor_id()];
+ }
+
+ send_guest_vcpu_virq(v, VIRQ_XENPMU);
+}
+
+static int pvpmu_init(struct domain *d, xenpmu_params_t *params)
+{
+ struct vcpu *v;
+ static int pvpmu_initted = 0;
+
+ if ( params->vcpu < 0 || params->vcpu >= d->max_vcpus )
+ return -EINVAL;
+
+ if ( !pvpmu_initted )
+ {
+ if (reserve_lapic_nmi() == 0)
+ set_nmi_callback(pmu_nmi_interrupt);
+ else
+ {
+ printk("Failed to reserve PMU NMI\n");
+ return -EBUSY;
+ }
+ open_softirq(PMU_SOFTIRQ, pmu_virq);
+ pvpmu_initted = 1;
+ }
+
+ if ( !mfn_valid(params->mfn) ||
+ !get_page_and_type(mfn_to_page(params->mfn), d, PGT_writable_page) )
+ return -EINVAL;
+
+ v = d->vcpu[params->vcpu];
+ v->arch.vpmu.xenpmu_data = map_domain_page_global(params->mfn);
+ memset(v->arch.vpmu.xenpmu_data, 0, PAGE_SIZE);
+
+ vpmu_initialise(v);
+
+ return 0;
+}
+
+static void pvpmu_finish(struct domain *d, xenpmu_params_t *params)
+{
+ struct vcpu *v;
+ uint64_t mfn;
+
+ if ( params->vcpu < 0 || params->vcpu >= d->max_vcpus )
+ return;
+
+ v = d->vcpu[params->vcpu];
+ if (v != current)
+ vcpu_pause(v);
+
+ if ( v->arch.vpmu.xenpmu_data )
+ {
+ mfn = domain_page_map_to_mfn(v->arch.vpmu.xenpmu_data);
+ if ( mfn_valid(mfn) )
+ {
+ unmap_domain_page_global(v->arch.vpmu.xenpmu_data);
+ put_page_and_type(mfn_to_page(mfn));
+ }
+ }
+ vpmu_destroy(v);
+
+ if (v != current)
+ vcpu_unpause(v);
+}
+
+long do_xenpmu_op(int op, XEN_GUEST_HANDLE_PARAM(void) arg)
+{
+ int ret = -EINVAL;
+ xenpmu_params_t pmu_params;
+ uint32_t mode, flags;
+
+ switch ( op )
+ {
+ case XENPMU_mode_set:
+ if ( !is_control_domain(current->domain) )
+ return -EPERM;
+
+ if ( copy_from_guest(&pmu_params, arg, 1) )
+ return -EFAULT;
+
+ mode = (uint32_t)pmu_params.control & VPMU_MODE_MASK;
+ if ( (mode & ~(VPMU_ON | VPMU_PRIV)) ||
+ ((mode & VPMU_ON) && (mode & VPMU_PRIV)) )
+ return -EINVAL;
+
+ vpmu_mode &= ~VPMU_MODE_MASK;
+ vpmu_mode |= mode;
+
+ ret = 0;
+ break;
+
+ case XENPMU_mode_get:
+ pmu_params.control = vpmu_mode & VPMU_MODE_MASK;
+ if ( copy_to_guest(arg, &pmu_params, 1) )
+ return -EFAULT;
+ ret = 0;
+ break;
+
+ case XENPMU_flags_set:
+ if ( !is_control_domain(current->domain) )
+ return -EPERM;
+
+ if ( copy_from_guest(&pmu_params, arg, 1) )
+ return -EFAULT;
+
+ flags = (uint64_t)pmu_params.control & VPMU_FLAGS_MASK;
+ if ( flags & ~VPMU_INTEL_BTS )
+ return -EINVAL;
+
+ vpmu_mode &= ~VPMU_FLAGS_MASK;
+ vpmu_mode |= flags;
+
+ ret = 0;
+ break;
+
+ case XENPMU_flags_get:
+ pmu_params.control = vpmu_mode & VPMU_FLAGS_MASK;
+ if ( copy_to_guest(arg, &pmu_params, 1) )
+ return -EFAULT;
+ ret = 0;
+ break;
+
+ case XENPMU_init:
+ if ( copy_from_guest(&pmu_params, arg, 1) )
+ return -EFAULT;
+ ret = pvpmu_init(current->domain, &pmu_params);
+ break;
+
+ case XENPMU_finish:
+ if ( copy_from_guest(&pmu_params, arg, 1) )
+ return -EFAULT;
+ pvpmu_finish(current->domain, &pmu_params);
+ break;
+
+ case XENPMU_lvtpc_set:
+ if ( copy_from_guest(&pmu_params, arg, 1) )
+ return -EFAULT;
+
+ vpmu_lvtpc_update((uint32_t)pmu_params.lvtpc);
+ ret = 0;
+ break;
+
+ case XENPMU_flush:
+ vpmu_reset(vcpu_vpmu(current), VPMU_WAIT_FOR_FLUSH);
+ vpmu_load(current);
+ ret = 0;
+ break;
+ }
+
+ return ret;
+}
diff --git a/xen/arch/x86/vpmu_amd.c b/xen/arch/x86/vpmu_amd.c
new file mode 100644
index 0000000..f64ffc0
--- /dev/null
+++ b/xen/arch/x86/vpmu_amd.c
@@ -0,0 +1,486 @@
+/*
+ * vpmu.c: PMU virtualization for HVM domain.
+ *
+ * Copyright (c) 2010, Advanced Micro Devices, Inc.
+ * Parts of this code are Copyright (c) 2007, Intel Corporation
+ *
+ * Author: Wei Wang <wei.wang2@xxxxxxx>
+ * Tested by: Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ */
+
+#include <xen/config.h>
+#include <xen/xenoprof.h>
+#include <xen/hvm/save.h>
+#include <xen/sched.h>
+#include <xen/irq.h>
+#include <asm/apic.h>
+#include <asm/hvm/vlapic.h>
+#include <asm/vpmu.h>
+#include <public/xenpmu.h>
+
+#define MSR_F10H_EVNTSEL_GO_SHIFT 40
+#define MSR_F10H_EVNTSEL_EN_SHIFT 22
+#define MSR_F10H_COUNTER_LENGTH 48
+
+#define is_guest_mode(msr) ((msr) & (1ULL << MSR_F10H_EVNTSEL_GO_SHIFT))
+#define is_pmu_enabled(msr) ((msr) & (1ULL << MSR_F10H_EVNTSEL_EN_SHIFT))
+#define set_guest_mode(msr) (msr |= (1ULL << MSR_F10H_EVNTSEL_GO_SHIFT))
+#define is_overflowed(msr) (!((msr) & (1ULL << (MSR_F10H_COUNTER_LENGTH-1))))
+
+static unsigned int __read_mostly num_counters;
+static const u32 __read_mostly *counters;
+static const u32 __read_mostly *ctrls;
+static bool_t __read_mostly k7_counters_mirrored;
+
+/* PMU Counter MSRs. */
+static const u32 AMD_F10H_COUNTERS[] = {
+ MSR_K7_PERFCTR0,
+ MSR_K7_PERFCTR1,
+ MSR_K7_PERFCTR2,
+ MSR_K7_PERFCTR3
+};
+
+/* PMU Control MSRs. */
+static const u32 AMD_F10H_CTRLS[] = {
+ MSR_K7_EVNTSEL0,
+ MSR_K7_EVNTSEL1,
+ MSR_K7_EVNTSEL2,
+ MSR_K7_EVNTSEL3
+};
+
+static const u32 AMD_F15H_COUNTERS[] = {
+ MSR_AMD_FAM15H_PERFCTR0,
+ MSR_AMD_FAM15H_PERFCTR1,
+ MSR_AMD_FAM15H_PERFCTR2,
+ MSR_AMD_FAM15H_PERFCTR3,
+ MSR_AMD_FAM15H_PERFCTR4,
+ MSR_AMD_FAM15H_PERFCTR5
+};
+
+static const u32 AMD_F15H_CTRLS[] = {
+ MSR_AMD_FAM15H_EVNTSEL0,
+ MSR_AMD_FAM15H_EVNTSEL1,
+ MSR_AMD_FAM15H_EVNTSEL2,
+ MSR_AMD_FAM15H_EVNTSEL3,
+ MSR_AMD_FAM15H_EVNTSEL4,
+ MSR_AMD_FAM15H_EVNTSEL5
+};
+
+static inline int get_pmu_reg_type(u32 addr)
+{
+ if ( (addr >= MSR_K7_EVNTSEL0) && (addr <= MSR_K7_EVNTSEL3) )
+ return MSR_TYPE_CTRL;
+
+ if ( (addr >= MSR_K7_PERFCTR0) && (addr <= MSR_K7_PERFCTR3) )
+ return MSR_TYPE_COUNTER;
+
+ if ( (addr >= MSR_AMD_FAM15H_EVNTSEL0) &&
+ (addr <= MSR_AMD_FAM15H_PERFCTR5 ) )
+ {
+ if (addr & 1)
+ return MSR_TYPE_COUNTER;
+ else
+ return MSR_TYPE_CTRL;
+ }
+
+ /* unsupported registers */
+ return -1;
+}
+
+static inline u32 get_fam15h_addr(u32 addr)
+{
+ switch ( addr )
+ {
+ case MSR_K7_PERFCTR0:
+ return MSR_AMD_FAM15H_PERFCTR0;
+ case MSR_K7_PERFCTR1:
+ return MSR_AMD_FAM15H_PERFCTR1;
+ case MSR_K7_PERFCTR2:
+ return MSR_AMD_FAM15H_PERFCTR2;
+ case MSR_K7_PERFCTR3:
+ return MSR_AMD_FAM15H_PERFCTR3;
+ case MSR_K7_EVNTSEL0:
+ return MSR_AMD_FAM15H_EVNTSEL0;
+ case MSR_K7_EVNTSEL1:
+ return MSR_AMD_FAM15H_EVNTSEL1;
+ case MSR_K7_EVNTSEL2:
+ return MSR_AMD_FAM15H_EVNTSEL2;
+ case MSR_K7_EVNTSEL3:
+ return MSR_AMD_FAM15H_EVNTSEL3;
+ default:
+ break;
+ }
+
+ return addr;
+}
+
+static void amd_vpmu_set_msr_bitmap(struct vcpu *v)
+{
+ unsigned int i;
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ struct amd_vpmu_context *ctxt = vpmu->context;
+
+ for ( i = 0; i < num_counters; i++ )
+ {
+ svm_intercept_msr(v, counters[i], MSR_INTERCEPT_NONE);
+ svm_intercept_msr(v, ctrls[i], MSR_INTERCEPT_WRITE);
+ }
+
+ ctxt->msr_bitmap_set = 1;
+}
+
+static void amd_vpmu_unset_msr_bitmap(struct vcpu *v)
+{
+ unsigned int i;
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ struct amd_vpmu_context *ctxt = vpmu->context;
+
+ for ( i = 0; i < num_counters; i++ )
+ {
+ svm_intercept_msr(v, counters[i], MSR_INTERCEPT_RW);
+ svm_intercept_msr(v, ctrls[i], MSR_INTERCEPT_RW);
+ }
+
+ ctxt->msr_bitmap_set = 0;
+}
+
+static int amd_vpmu_do_interrupt(struct cpu_user_regs *regs)
+{
+ return 1;
+}
+
+static inline void context_load(struct vcpu *v)
+{
+ unsigned int i;
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ struct amd_vpmu_context *ctxt = vpmu->context;
+
+ for ( i = 0; i < num_counters; i++ )
+ {
+ wrmsrl(counters[i], ctxt->counters[i]);
+ wrmsrl(ctrls[i], ctxt->ctrls[i]);
+ }
+}
+
+static void amd_vpmu_load(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ struct amd_vpmu_context *ctxt = vpmu->context;
+
+ vpmu_reset(vpmu, VPMU_FROZEN);
+
+ if ( vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED) )
+ {
+ unsigned int i;
+
+ for ( i = 0; i < num_counters; i++ )
+ wrmsrl(ctrls[i], ctxt->ctrls[i]);
+
+ return;
+ }
+
+ context_load(v);
+}
+
+static inline void context_save(struct vcpu *v)
+{
+ unsigned int i;
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ struct amd_vpmu_context *ctxt = vpmu->context;
+
+ /* No need to save controls -- they are saved in amd_vpmu_do_wrmsr */
+ for ( i = 0; i < num_counters; i++ )
+ rdmsrl(counters[i], ctxt->counters[i]);
+}
+
+static int amd_vpmu_save(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ struct amd_vpmu_context *ctx = vpmu->context;
+ unsigned int i;
+
+ if ( !vpmu_is_set(vpmu, VPMU_FROZEN) )
+ {
+ for ( i = 0; i < num_counters; i++ )
+ wrmsrl(ctrls[i], 0);
+
+ vpmu_set(vpmu, VPMU_FROZEN);
+ }
+
+ if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_SAVE) )
+ return 0;
+
+ context_save(v);
+
+ if ( is_hvm_domain(v->domain) &&
+ !vpmu_is_set(vpmu, VPMU_RUNNING) && ctx->msr_bitmap_set )
+ amd_vpmu_unset_msr_bitmap(v);
+
+ return 1;
+}
+
+static void context_update(unsigned int msr, u64 msr_content)
+{
+ unsigned int i;
+ struct vcpu *v = current;
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ struct amd_vpmu_context *ctxt = vpmu->context;
+
+ if ( k7_counters_mirrored &&
+ ((msr >= MSR_K7_EVNTSEL0) && (msr <= MSR_K7_PERFCTR3)) )
+ {
+ msr = get_fam15h_addr(msr);
+ }
+
+ for ( i = 0; i < num_counters; i++ )
+ {
+ if ( msr == ctrls[i] )
+ {
+ ctxt->ctrls[i] = msr_content;
+ return;
+ }
+ else if (msr == counters[i] )
+ {
+ ctxt->counters[i] = msr_content;
+ return;
+ }
+ }
+}
+
+static int amd_vpmu_do_wrmsr(unsigned int msr, uint64_t msr_content)
+{
+ struct vcpu *v = current;
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+
+ /* For all counters, enable guest only mode for HVM guest */
+ if ( is_hvm_domain(v->domain) && (get_pmu_reg_type(msr) == MSR_TYPE_CTRL)
&&
+ !(is_guest_mode(msr_content)) )
+ {
+ set_guest_mode(msr_content);
+ }
+
+ /* check if the first counter is enabled */
+ if ( (get_pmu_reg_type(msr) == MSR_TYPE_CTRL) &&
+ is_pmu_enabled(msr_content) && !vpmu_is_set(vpmu, VPMU_RUNNING) )
+ {
+ if ( !acquire_pmu_ownership(PMU_OWNER_HVM) )
+ return 1;
+ vpmu_set(vpmu, VPMU_RUNNING);
+ apic_write(APIC_LVTPC, APIC_DM_NMI);
+ vpmu->hw_lapic_lvtpc = APIC_DM_NMI;
+
+ if ( is_hvm_domain(v->domain) &&
+ !((struct amd_vpmu_context *)vpmu->context)->msr_bitmap_set )
+ amd_vpmu_set_msr_bitmap(v);
+ }
+
+ /* stop saving & restore if guest stops first counter */
+ if ( (get_pmu_reg_type(msr) == MSR_TYPE_CTRL) &&
+ (is_pmu_enabled(msr_content) == 0) && vpmu_is_set(vpmu, VPMU_RUNNING) )
+ {
+ apic_write(APIC_LVTPC, APIC_DM_NMI | APIC_LVT_MASKED);
+ vpmu->hw_lapic_lvtpc = APIC_DM_NMI | APIC_LVT_MASKED;
+ vpmu_reset(vpmu, VPMU_RUNNING);
+ if ( is_hvm_domain(v->domain) &&
+ ((struct amd_vpmu_context *)vpmu->context)->msr_bitmap_set )
+ amd_vpmu_unset_msr_bitmap(v);
+ release_pmu_ownship(PMU_OWNER_HVM);
+ }
+
+ if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED)
+ || vpmu_is_set(vpmu, VPMU_FROZEN) )
+ {
+ context_load(v);
+ vpmu_set(vpmu, VPMU_CONTEXT_LOADED);
+ vpmu_reset(vpmu, VPMU_FROZEN);
+ }
+
+ /* Update vpmu context immediately */
+ context_update(msr, msr_content);
+
+ /* Write to hw counters */
+ wrmsrl(msr, msr_content);
+ return 1;
+}
+
+static int amd_vpmu_do_rdmsr(unsigned int msr, uint64_t *msr_content)
+{
+ struct vcpu *v = current;
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+
+ if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED)
+ || vpmu_is_set(vpmu, VPMU_FROZEN) )
+ {
+ context_load(v);
+ vpmu_set(vpmu, VPMU_CONTEXT_LOADED);
+ vpmu_reset(vpmu, VPMU_FROZEN);
+ }
+
+ rdmsrl(msr, *msr_content);
+
+ return 1;
+}
+
+static int amd_vpmu_initialise(struct vcpu *v)
+{
+ struct amd_vpmu_context *ctxt;
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ uint8_t family = current_cpu_data.x86;
+
+ if ( vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
+ return 0;
+
+ if ( counters == NULL )
+ {
+ switch ( family )
+ {
+ case 0x15:
+ num_counters = F15H_NUM_COUNTERS;
+ counters = AMD_F15H_COUNTERS;
+ ctrls = AMD_F15H_CTRLS;
+ k7_counters_mirrored = 1;
+ break;
+ case 0x10:
+ case 0x12:
+ case 0x14:
+ case 0x16:
+ default:
+ num_counters = F10H_NUM_COUNTERS;
+ counters = AMD_F10H_COUNTERS;
+ ctrls = AMD_F10H_CTRLS;
+ k7_counters_mirrored = 0;
+ break;
+ }
+ }
+
+ if ( is_hvm_domain(v->domain) )
+ {
+ ctxt = xzalloc(struct amd_vpmu_context);
+ if ( !ctxt )
+ {
+ gdprintk(XENLOG_WARNING, "Insufficient memory for PMU, "
+ " PMU feature is unavailable on domain %d vcpu %d.\n",
+ v->vcpu_id, v->domain->domain_id);
+ return -ENOMEM;
+ }
+ }
+ else
+ ctxt = &v->arch.vpmu.xenpmu_data->pmu.amd;
+
+ vpmu->context = ctxt;
+ vpmu_set(vpmu, VPMU_CONTEXT_ALLOCATED);
+ return 0;
+}
+
+static void amd_vpmu_destroy(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+
+ if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
+ return;
+
+ if ( is_hvm_domain(v->domain) )
+ {
+ if ( ((struct amd_vpmu_context *)vpmu->context)->msr_bitmap_set )
+ amd_vpmu_unset_msr_bitmap(v);
+
+ xfree(vpmu->context);
+ release_pmu_ownship(PMU_OWNER_HVM);
+ }
+
+ vpmu->context = NULL;
+ vpmu_clear(vpmu);
+}
+
+/* VPMU part of the 'q' keyhandler */
+static void amd_vpmu_dump(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ struct amd_vpmu_context *ctxt = vpmu->context;
+ unsigned int i;
+
+ printk(" VPMU state: 0x%x ", vpmu->flags);
+ if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
+ {
+ printk("\n");
+ return;
+ }
+
+ printk("(");
+ if ( vpmu_is_set(vpmu, VPMU_PASSIVE_DOMAIN_ALLOCATED) )
+ printk("PASSIVE_DOMAIN_ALLOCATED, ");
+ if ( vpmu_is_set(vpmu, VPMU_FROZEN) )
+ printk("FROZEN, ");
+ if ( vpmu_is_set(vpmu, VPMU_CONTEXT_SAVE) )
+ printk("SAVE, ");
+ if ( vpmu_is_set(vpmu, VPMU_RUNNING) )
+ printk("RUNNING, ");
+ if ( vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED) )
+ printk("LOADED, ");
+ printk("ALLOCATED)\n");
+
+ for ( i = 0; i < num_counters; i++ )
+ {
+ uint64_t ctrl, cntr;
+
+ rdmsrl(ctrls[i], ctrl);
+ rdmsrl(counters[i], cntr);
+ printk(" 0x%08x: 0x%lx (0x%lx in HW) 0x%08x: 0x%lx (0x%lx in
HW)\n",
+ ctrls[i], ctxt->ctrls[i], ctrl,
+ counters[i], ctxt->counters[i], cntr);
+ }
+}
+
+struct arch_vpmu_ops amd_vpmu_ops = {
+ .do_wrmsr = amd_vpmu_do_wrmsr,
+ .do_rdmsr = amd_vpmu_do_rdmsr,
+ .do_interrupt = amd_vpmu_do_interrupt,
+ .arch_vpmu_destroy = amd_vpmu_destroy,
+ .arch_vpmu_save = amd_vpmu_save,
+ .arch_vpmu_load = amd_vpmu_load,
+ .arch_vpmu_dump = amd_vpmu_dump
+};
+
+int svm_vpmu_initialise(struct vcpu *v, unsigned int vpmu_flags)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ uint8_t family = current_cpu_data.x86;
+ int ret = 0;
+
+ /* vpmu enabled? */
+ if ( vpmu_flags == VPMU_OFF )
+ return 0;
+
+ switch ( family )
+ {
+ case 0x10:
+ case 0x12:
+ case 0x14:
+ case 0x15:
+ case 0x16:
+ ret = amd_vpmu_initialise(v);
+ if ( !ret )
+ vpmu->arch_vpmu_ops = &amd_vpmu_ops;
+ return ret;
+ }
+
+ printk("VPMU: Initialization failed. "
+ "AMD processor family %d has not "
+ "been supported\n", family);
+ return -EINVAL;
+}
+
diff --git a/xen/arch/x86/vpmu_intel.c b/xen/arch/x86/vpmu_intel.c
new file mode 100644
index 0000000..d7570c5
--- /dev/null
+++ b/xen/arch/x86/vpmu_intel.c
@@ -0,0 +1,938 @@
+/*
+ * vpmu_core2.c: CORE 2 specific PMU virtualization for HVM domain.
+ *
+ * Copyright (c) 2007, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Author: Haitao Shan <haitao.shan@xxxxxxxxx>
+ */
+
+#include <xen/config.h>
+#include <xen/sched.h>
+#include <xen/xenoprof.h>
+#include <xen/irq.h>
+#include <asm/system.h>
+#include <asm/regs.h>
+#include <asm/types.h>
+#include <asm/apic.h>
+#include <asm/traps.h>
+#include <asm/msr.h>
+#include <asm/msr-index.h>
+#include <asm/hvm/support.h>
+#include <asm/hvm/vlapic.h>
+#include <asm/hvm/vmx/vmx.h>
+#include <asm/hvm/vmx/vmcs.h>
+#include <public/sched.h>
+#include <public/hvm/save.h>
+#include <public/xenpmu.h>
+#include <asm/vpmu.h>
+
+/*
+ * See Intel SDM Vol 2a Instruction Set Reference chapter 3 for CPUID
+ * instruction.
+ * cpuid 0xa - Architectural Performance Monitoring Leaf
+ * Register eax
+ */
+#define PMU_VERSION_SHIFT 0 /* Version ID */
+#define PMU_VERSION_BITS 8 /* 8 bits 0..7 */
+#define PMU_VERSION_MASK (((1 << PMU_VERSION_BITS) - 1) <<
PMU_VERSION_SHIFT)
+
+#define PMU_GENERAL_NR_SHIFT 8 /* Number of general pmu registers */
+#define PMU_GENERAL_NR_BITS 8 /* 8 bits 8..15 */
+#define PMU_GENERAL_NR_MASK (((1 << PMU_GENERAL_NR_BITS) - 1) <<
PMU_GENERAL_NR_SHIFT)
+
+#define PMU_GENERAL_WIDTH_SHIFT 16 /* Width of general pmu registers */
+#define PMU_GENERAL_WIDTH_BITS 8 /* 8 bits 16..23 */
+#define PMU_GENERAL_WIDTH_MASK (((1 << PMU_GENERAL_WIDTH_BITS) - 1) <<
PMU_GENERAL_WIDTH_SHIFT)
+/* Register edx */
+#define PMU_FIXED_NR_SHIFT 0 /* Number of fixed pmu registers */
+#define PMU_FIXED_NR_BITS 5 /* 5 bits 0..4 */
+#define PMU_FIXED_NR_MASK (((1 << PMU_FIXED_NR_BITS) -1) <<
PMU_FIXED_NR_SHIFT)
+
+#define PMU_FIXED_WIDTH_SHIFT 5 /* Width of fixed pmu registers */
+#define PMU_FIXED_WIDTH_BITS 8 /* 8 bits 5..12 */
+#define PMU_FIXED_WIDTH_MASK (((1 << PMU_FIXED_WIDTH_BITS) -1) <<
PMU_FIXED_WIDTH_SHIFT)
+
+
+/* Intel-specific VPMU features */
+#define VPMU_CPU_HAS_DS 0x100 /* Has Debug Store */
+#define VPMU_CPU_HAS_BTS 0x200 /* Has Branch Trace Store */
+
+/*
+ * MSR_CORE_PERF_FIXED_CTR_CTRL contains the configuration of all fixed
+ * counters. 4 bits for every counter.
+ */
+#define FIXED_CTR_CTRL_BITS 4
+#define FIXED_CTR_CTRL_MASK ((1 << FIXED_CTR_CTRL_BITS) - 1)
+
+/* The index into the core2_ctrls_msr[] of this MSR used in core2_vpmu_dump()
*/
+#define MSR_CORE_PERF_FIXED_CTR_CTRL_IDX 0
+
+static int arch_pmc_cnt; /* Number of general-purpose performance counters */
+
+/*
+ * QUIRK to workaround an issue on various family 6 cpus.
+ * The issue leads to endless PMC interrupt loops on the processor.
+ * If the interrupt handler is running and a pmc reaches the value 0, this
+ * value remains forever and it triggers immediately a new interrupt after
+ * finishing the handler.
+ * A workaround is to read all flagged counters and if the value is 0 write
+ * 1 (or another value != 0) into it.
+ * There exist no errata and the real cause of this behaviour is unknown.
+ */
+bool_t __read_mostly is_pmc_quirk;
+
+static void check_pmc_quirk(void)
+{
+ if ( current_cpu_data.x86 == 6 )
+ is_pmc_quirk = 1;
+ else
+ is_pmc_quirk = 0;
+}
+
+static void handle_pmc_quirk(u64 msr_content)
+{
+ int i;
+ u64 val;
+
+ if ( !is_pmc_quirk )
+ return;
+
+ val = msr_content;
+ for ( i = 0; i < arch_pmc_cnt; i++ )
+ {
+ if ( val & 0x1 )
+ {
+ u64 cnt;
+ rdmsrl(MSR_P6_PERFCTR0 + i, cnt);
+ if ( cnt == 0 )
+ wrmsrl(MSR_P6_PERFCTR0 + i, 1);
+ }
+ val >>= 1;
+ }
+ val = msr_content >> 32;
+ for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
+ {
+ if ( val & 0x1 )
+ {
+ u64 cnt;
+ rdmsrl(MSR_CORE_PERF_FIXED_CTR0 + i, cnt);
+ if ( cnt == 0 )
+ wrmsrl(MSR_CORE_PERF_FIXED_CTR0 + i, 1);
+ }
+ val >>= 1;
+ }
+}
+
+/*
+ * Read the number of general counters via CPUID.EAX[0xa].EAX[8..15]
+ */
+static int core2_get_pmc_count(void)
+{
+ u32 eax, ebx, ecx, edx;
+
+ cpuid(0xa, &eax, &ebx, &ecx, &edx);
+ return ( (eax & PMU_GENERAL_NR_MASK) >> PMU_GENERAL_NR_SHIFT );
+}
+
+static u64 core2_calc_intial_glb_ctrl_msr(void)
+{
+ int arch_pmc_bits = (1 << arch_pmc_cnt) - 1;
+ u64 fix_pmc_bits = (1 << VPMU_CORE2_NUM_FIXED) - 1;
+ return ((fix_pmc_bits << 32) | arch_pmc_bits);
+}
+
+/* edx bits 5-12: Bit width of fixed-function performance counters */
+static int core2_get_bitwidth_fix_count(void)
+{
+ u32 eax, ebx, ecx, edx;
+
+ cpuid(0xa, &eax, &ebx, &ecx, &edx);
+ return ((edx & PMU_FIXED_WIDTH_MASK) >> PMU_FIXED_WIDTH_SHIFT);
+}
+
+static int is_core2_vpmu_msr(u32 msr_index, int *type, int *index)
+{
+ int i;
+
+ for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
+ {
+ if ( core2_fix_counters_msr[i] == msr_index )
+ {
+ *type = MSR_TYPE_COUNTER;
+ *index = i;
+ return 1;
+ }
+ }
+
+ for ( i = 0; i < VPMU_CORE2_NUM_CTRLS; i++ )
+ {
+ if ( core2_ctrls_msr[i] == msr_index )
+ {
+ *type = MSR_TYPE_CTRL;
+ *index = i;
+ return 1;
+ }
+ }
+
+ if ( (msr_index == MSR_CORE_PERF_GLOBAL_CTRL) ||
+ (msr_index == MSR_CORE_PERF_GLOBAL_STATUS) ||
+ (msr_index == MSR_CORE_PERF_GLOBAL_OVF_CTRL) )
+ {
+ *type = MSR_TYPE_GLOBAL;
+ return 1;
+ }
+
+ if ( (msr_index >= MSR_IA32_PERFCTR0) &&
+ (msr_index < (MSR_IA32_PERFCTR0 + arch_pmc_cnt)) )
+ {
+ *type = MSR_TYPE_ARCH_COUNTER;
+ *index = msr_index - MSR_IA32_PERFCTR0;
+ return 1;
+ }
+
+ if ( (msr_index >= MSR_P6_EVNTSEL0) &&
+ (msr_index < (MSR_P6_EVNTSEL0 + arch_pmc_cnt)) )
+ {
+ *type = MSR_TYPE_ARCH_CTRL;
+ *index = msr_index - MSR_P6_EVNTSEL0;
+ return 1;
+ }
+
+ return 0;
+}
+
+#define msraddr_to_bitpos(x) (((x)&0xffff) + ((x)>>31)*0x2000)
+static void core2_vpmu_set_msr_bitmap(unsigned long *msr_bitmap)
+{
+ int i;
+
+ /* Allow Read/Write PMU Counters MSR Directly. */
+ for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
+ {
+ clear_bit(msraddr_to_bitpos(core2_fix_counters_msr[i]), msr_bitmap);
+ clear_bit(msraddr_to_bitpos(core2_fix_counters_msr[i]),
+ msr_bitmap + 0x800/BYTES_PER_LONG);
+ }
+ for ( i = 0; i < arch_pmc_cnt; i++ )
+ {
+ clear_bit(msraddr_to_bitpos(MSR_IA32_PERFCTR0+i), msr_bitmap);
+ clear_bit(msraddr_to_bitpos(MSR_IA32_PERFCTR0+i),
+ msr_bitmap + 0x800/BYTES_PER_LONG);
+ }
+
+ /* Allow Read PMU Non-global Controls Directly. */
+ for ( i = 0; i < VPMU_CORE2_NUM_CTRLS; i++ )
+ clear_bit(msraddr_to_bitpos(core2_ctrls_msr[i]), msr_bitmap);
+ for ( i = 0; i < arch_pmc_cnt; i++ )
+ clear_bit(msraddr_to_bitpos(MSR_P6_EVNTSEL0+i), msr_bitmap);
+}
+
+static void core2_vpmu_unset_msr_bitmap(unsigned long *msr_bitmap)
+{
+ int i;
+
+ for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
+ {
+ set_bit(msraddr_to_bitpos(core2_fix_counters_msr[i]), msr_bitmap);
+ set_bit(msraddr_to_bitpos(core2_fix_counters_msr[i]),
+ msr_bitmap + 0x800/BYTES_PER_LONG);
+ }
+ for ( i = 0; i < arch_pmc_cnt; i++ )
+ {
+ set_bit(msraddr_to_bitpos(MSR_IA32_PERFCTR0+i), msr_bitmap);
+ set_bit(msraddr_to_bitpos(MSR_IA32_PERFCTR0+i),
+ msr_bitmap + 0x800/BYTES_PER_LONG);
+ }
+ for ( i = 0; i < VPMU_CORE2_NUM_CTRLS; i++ )
+ set_bit(msraddr_to_bitpos(core2_ctrls_msr[i]), msr_bitmap);
+ for ( i = 0; i < arch_pmc_cnt; i++ )
+ set_bit(msraddr_to_bitpos(MSR_P6_EVNTSEL0+i), msr_bitmap);
+}
+
+static inline void __core2_vpmu_save(struct vcpu *v)
+{
+ int i;
+ struct core2_vpmu_context *core2_vpmu_cxt = vcpu_vpmu(v)->context;
+
+ for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
+ rdmsrl(core2_fix_counters_msr[i], core2_vpmu_cxt->fix_counters[i]);
+ for ( i = 0; i < arch_pmc_cnt; i++ )
+ rdmsrl(MSR_IA32_PERFCTR0+i, core2_vpmu_cxt->arch_msr_pair[i].counter);
+
+ if ( !is_hvm_domain(v->domain) )
+ rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, core2_vpmu_cxt->global_status);
+}
+
+static int core2_vpmu_save(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+
+ if ( !vpmu_is_set_all(vpmu, VPMU_CONTEXT_SAVE | VPMU_CONTEXT_LOADED) )
+ return 0;
+
+ if ( !is_hvm_domain(v->domain) )
+ wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
+
+ __core2_vpmu_save(v);
+
+ /* Unset PMU MSR bitmap to trap lazy load. */
+ if ( !vpmu_is_set(vpmu, VPMU_RUNNING) && cpu_has_vmx_msr_bitmap
+ && is_hvm_domain(v->domain) )
+ core2_vpmu_unset_msr_bitmap(v->arch.hvm_vmx.msr_bitmap);
+
+ return 1;
+}
+
+static inline void __core2_vpmu_load(struct vcpu *v)
+{
+ int i;
+ struct core2_vpmu_context *core2_vpmu_cxt = vcpu_vpmu(v)->context;
+
+ for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
+ wrmsrl(core2_fix_counters_msr[i], core2_vpmu_cxt->fix_counters[i]);
+ for ( i = 0; i < arch_pmc_cnt; i++ )
+ wrmsrl(MSR_IA32_PERFCTR0+i, core2_vpmu_cxt->arch_msr_pair[i].counter);
+
+ for ( i = 0; i < VPMU_CORE2_NUM_CTRLS; i++ )
+ wrmsrl(core2_ctrls_msr[i], core2_vpmu_cxt->ctrls[i]);
+ for ( i = 0; i < arch_pmc_cnt; i++ )
+ wrmsrl(MSR_P6_EVNTSEL0+i, core2_vpmu_cxt->arch_msr_pair[i].control);
+
+ if ( !is_hvm_domain(v->domain) )
+ {
+ wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, core2_vpmu_cxt->global_ovf_ctrl);
+ wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, core2_vpmu_cxt->global_ctrl);
+ }
+}
+
+static void core2_vpmu_load(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+
+ if ( vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED) )
+ return;
+
+ __core2_vpmu_load(v);
+}
+
+static int core2_vpmu_alloc_resource(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ struct core2_vpmu_context *core2_vpmu_cxt;
+ struct core2_pmu_enable *pmu_enable = NULL;
+
+ pmu_enable = xzalloc_bytes(sizeof(struct core2_pmu_enable));
+ if ( !pmu_enable )
+ return 0;
+
+ if ( is_hvm_domain(v->domain) )
+ {
+ if ( !acquire_pmu_ownership(PMU_OWNER_HVM) )
+ goto out_err;
+
+ wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
+ if ( vmx_add_host_load_msr(MSR_CORE_PERF_GLOBAL_CTRL) )
+ goto out_err;
+
+ if ( vmx_add_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL) )
+ goto out_err;
+ vmx_write_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL,
+ core2_calc_intial_glb_ctrl_msr());
+
+ core2_vpmu_cxt = xzalloc_bytes(sizeof(struct core2_vpmu_context));
+ if ( !core2_vpmu_cxt )
+ goto out_err;
+ }
+ else
+ {
+ core2_vpmu_cxt = &v->arch.vpmu.xenpmu_data->pmu.intel;
+ vpmu_set(vpmu, VPMU_CONTEXT_ALLOCATED);
+ }
+
+ core2_vpmu_cxt->pmu_enable = pmu_enable;
+ vpmu->context = (void *)core2_vpmu_cxt;
+
+ vpmu_set(vpmu, VPMU_CONTEXT_ALLOCATED);
+
+ return 1;
+
+out_err:
+ xfree(pmu_enable);
+ vmx_rm_host_load_msr(MSR_CORE_PERF_GLOBAL_CTRL);
+ vmx_rm_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL);
+ release_pmu_ownship(PMU_OWNER_HVM);
+
+ printk("Failed to allocate VPMU resources for domain %u vcpu %u\n",
+ v->vcpu_id, v->domain->domain_id);
+
+ return 0;
+}
+
+static void core2_vpmu_save_msr_context(struct vcpu *v, int type,
+ int index, u64 msr_data)
+{
+ struct core2_vpmu_context *core2_vpmu_cxt = vcpu_vpmu(v)->context;
+
+ switch ( type )
+ {
+ case MSR_TYPE_CTRL:
+ core2_vpmu_cxt->ctrls[index] = msr_data;
+ break;
+ case MSR_TYPE_ARCH_CTRL:
+ core2_vpmu_cxt->arch_msr_pair[index].control = msr_data;
+ break;
+ }
+}
+
+static int core2_vpmu_msr_common_check(u32 msr_index, int *type, int *index)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(current);
+
+ if ( !is_core2_vpmu_msr(msr_index, type, index) )
+ return 0;
+
+ if ( unlikely(!vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED)) &&
+ !core2_vpmu_alloc_resource(current) )
+ return 0;
+
+ /* Do the lazy load staff. */
+ if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED) )
+ {
+ __core2_vpmu_load(current);
+ vpmu_set(vpmu, VPMU_CONTEXT_LOADED);
+ if ( cpu_has_vmx_msr_bitmap && is_hvm_domain(current->domain) )
+ core2_vpmu_set_msr_bitmap(current->arch.hvm_vmx.msr_bitmap);
+ }
+ return 1;
+}
+
+static int core2_vpmu_do_wrmsr(unsigned int msr, uint64_t msr_content)
+{
+ u64 global_ctrl, non_global_ctrl;
+ char pmu_enable = 0;
+ int i, tmp;
+ int type = -1, index = -1;
+ struct vcpu *v = current;
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ struct core2_vpmu_context *core2_vpmu_cxt = NULL;
+
+ if ( !core2_vpmu_msr_common_check(msr, &type, &index) )
+ {
+ /* Special handling for BTS */
+ if ( msr == MSR_IA32_DEBUGCTLMSR )
+ {
+ uint64_t supported = IA32_DEBUGCTLMSR_TR | IA32_DEBUGCTLMSR_BTS |
+ IA32_DEBUGCTLMSR_BTINT;
+
+ if ( cpu_has(¤t_cpu_data, X86_FEATURE_DSCPL) )
+ supported |= IA32_DEBUGCTLMSR_BTS_OFF_OS |
+ IA32_DEBUGCTLMSR_BTS_OFF_USR;
+ if ( msr_content & supported )
+ {
+ if ( vpmu_is_set(vpmu, VPMU_CPU_HAS_BTS) )
+ return 1;
+ gdprintk(XENLOG_WARNING, "Debug Store is not supported on this
cpu\n");
+
+ if ( is_hvm_domain(v->domain) )
+ hvm_inject_hw_exception(TRAP_gp_fault, 0);
+ else
+ send_guest_trap(v->domain, v->vcpu_id, TRAP_gp_fault);
+
+ return 0;
+ }
+ }
+ return 0;
+ }
+
+ core2_vpmu_cxt = vpmu->context;
+ switch ( msr )
+ {
+ case MSR_CORE_PERF_GLOBAL_OVF_CTRL:
+ core2_vpmu_cxt->global_ovf_status &= ~msr_content;
+ core2_vpmu_cxt->global_ovf_ctrl = msr_content;
+ return 1;
+ case MSR_CORE_PERF_GLOBAL_STATUS:
+ gdprintk(XENLOG_INFO, "Can not write readonly MSR: "
+ "MSR_PERF_GLOBAL_STATUS(0x38E)!\n");
+ if ( is_hvm_domain(v->domain) )
+ hvm_inject_hw_exception(TRAP_gp_fault, 0);
+ else
+ send_guest_trap(v->domain, v->vcpu_id, TRAP_gp_fault);
+ return 1;
+ case MSR_IA32_PEBS_ENABLE:
+ if ( msr_content & 1 )
+ gdprintk(XENLOG_WARNING, "Guest is trying to enable PEBS, "
+ "which is not supported.\n");
+ return 1;
+ case MSR_IA32_DS_AREA:
+ if ( vpmu_is_set(vpmu, VPMU_CPU_HAS_DS) )
+ {
+ if ( !is_canonical_address(msr_content) )
+ {
+ gdprintk(XENLOG_WARNING,
+ "Illegal address for IA32_DS_AREA: %#" PRIx64 "x\n",
+ msr_content);
+ if ( is_hvm_domain(v->domain) )
+ hvm_inject_hw_exception(TRAP_gp_fault, 0);
+ else
+ send_guest_trap(v->domain, v->vcpu_id, TRAP_gp_fault);
+ return 1;
+ }
+ core2_vpmu_cxt->pmu_enable->ds_area_enable = msr_content ? 1 : 0;
+ break;
+ }
+ gdprintk(XENLOG_WARNING, "Guest setting of DTS is ignored.\n");
+ return 1;
+ case MSR_CORE_PERF_GLOBAL_CTRL:
+ global_ctrl = msr_content;
+ for ( i = 0; i < arch_pmc_cnt; i++ )
+ {
+ rdmsrl(MSR_P6_EVNTSEL0+i, non_global_ctrl);
+ core2_vpmu_cxt->pmu_enable->arch_pmc_enable[i] =
+ global_ctrl & (non_global_ctrl >> 22) & 1;
+ global_ctrl >>= 1;
+ }
+
+ rdmsrl(MSR_CORE_PERF_FIXED_CTR_CTRL, non_global_ctrl);
+ global_ctrl = msr_content >> 32;
+ for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
+ {
+ core2_vpmu_cxt->pmu_enable->fixed_ctr_enable[i] =
+ (global_ctrl & 1) & ((non_global_ctrl & 0x3)? 1: 0);
+ non_global_ctrl >>= FIXED_CTR_CTRL_BITS;
+ global_ctrl >>= 1;
+ }
+ break;
+ case MSR_CORE_PERF_FIXED_CTR_CTRL:
+ non_global_ctrl = msr_content;
+ if ( is_hvm_domain(v->domain) )
+ vmx_read_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL, &global_ctrl);
+ else
+ rdmsrl(MSR_CORE_PERF_GLOBAL_CTRL, global_ctrl);
+ global_ctrl >>= 32;
+ for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
+ {
+ core2_vpmu_cxt->pmu_enable->fixed_ctr_enable[i] =
+ (global_ctrl & 1) & ((non_global_ctrl & 0x3)? 1: 0);
+ non_global_ctrl >>= 4;
+ global_ctrl >>= 1;
+ }
+ break;
+ default:
+ tmp = msr - MSR_P6_EVNTSEL0;
+ if ( is_hvm_domain(v->domain) )
+ vmx_read_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL, &global_ctrl);
+ else
+ rdmsrl(MSR_CORE_PERF_GLOBAL_CTRL, global_ctrl);
+ if ( tmp >= 0 && tmp < arch_pmc_cnt )
+ core2_vpmu_cxt->pmu_enable->arch_pmc_enable[tmp] =
+ (global_ctrl >> tmp) & (msr_content >> 22) & 1;
+ }
+
+ for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
+ pmu_enable |= core2_vpmu_cxt->pmu_enable->fixed_ctr_enable[i];
+ for ( i = 0; i < arch_pmc_cnt; i++ )
+ pmu_enable |= core2_vpmu_cxt->pmu_enable->arch_pmc_enable[i];
+ pmu_enable |= core2_vpmu_cxt->pmu_enable->ds_area_enable;
+ if ( pmu_enable )
+ vpmu_set(vpmu, VPMU_RUNNING);
+ else
+ vpmu_reset(vpmu, VPMU_RUNNING);
+
+ if ( is_hvm_domain(v->domain) )
+ {
+ /* Setup LVTPC in local apic */
+ if ( vpmu_is_set(vpmu, VPMU_RUNNING) &&
+ is_vlapic_lvtpc_enabled(vcpu_vlapic(v)) )
+ {
+ apic_write_around(APIC_LVTPC, APIC_DM_NMI);
+ vpmu->hw_lapic_lvtpc = APIC_DM_NMI;
+ }
+ else
+ {
+ apic_write_around(APIC_LVTPC, APIC_DM_NMI | APIC_LVT_MASKED);
+ vpmu->hw_lapic_lvtpc = APIC_DM_NMI | APIC_LVT_MASKED;
+ }
+ }
+
+ core2_vpmu_save_msr_context(v, type, index, msr_content);
+ if ( type != MSR_TYPE_GLOBAL )
+ {
+ u64 mask;
+ int inject_gp = 0;
+ switch ( type )
+ {
+ case MSR_TYPE_ARCH_CTRL: /* MSR_P6_EVNTSEL[0,...] */
+ mask = ~((1ull << 32) - 1);
+ if (msr_content & mask)
+ inject_gp = 1;
+ break;
+ case MSR_TYPE_CTRL: /* IA32_FIXED_CTR_CTRL */
+ if ( msr == MSR_IA32_DS_AREA )
+ break;
+ /* 4 bits per counter, currently 3 fixed counters implemented. */
+ mask = ~((1ull << (VPMU_CORE2_NUM_FIXED * FIXED_CTR_CTRL_BITS)) -
1);
+ if (msr_content & mask)
+ inject_gp = 1;
+ break;
+ case MSR_TYPE_COUNTER: /* IA32_FIXED_CTR[0-2] */
+ mask = ~((1ull << core2_get_bitwidth_fix_count()) - 1);
+ if (msr_content & mask)
+ inject_gp = 1;
+ break;
+ }
+
+ if (inject_gp)
+ {
+ if ( is_hvm_domain(v->domain) )
+ hvm_inject_hw_exception(TRAP_gp_fault, 0);
+ else
+ send_guest_trap(v->domain, v->vcpu_id, TRAP_gp_fault);
+ }
+ else
+ wrmsrl(msr, msr_content);
+ }
+ else
+ {
+ if ( is_hvm_domain(v->domain) )
+ vmx_write_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL, msr_content);
+ else
+ {
+ wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, msr_content);
+ core2_vpmu_cxt->global_ctrl = msr_content;
+ }
+ }
+
+ return 1;
+}
+
+static int core2_vpmu_do_rdmsr(unsigned int msr, uint64_t *msr_content)
+{
+ int type = -1, index = -1;
+ struct vcpu *v = current;
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ struct core2_vpmu_context *core2_vpmu_cxt = NULL;
+
+ if ( core2_vpmu_msr_common_check(msr, &type, &index) )
+ {
+ core2_vpmu_cxt = vpmu->context;
+ switch ( msr )
+ {
+ case MSR_CORE_PERF_GLOBAL_OVF_CTRL:
+ *msr_content = 0;
+ break;
+ case MSR_CORE_PERF_GLOBAL_STATUS:
+ *msr_content = core2_vpmu_cxt->global_ovf_status;
+ break;
+ case MSR_CORE_PERF_GLOBAL_CTRL:
+ if ( is_hvm_domain(v->domain) )
+ vmx_read_guest_msr(MSR_CORE_PERF_GLOBAL_CTRL, msr_content);
+ else
+ rdmsrl(MSR_CORE_PERF_GLOBAL_CTRL, *msr_content);
+ break;
+ default:
+ rdmsrl(msr, *msr_content);
+ }
+ }
+ else
+ {
+ /* Extension for BTS */
+ if ( msr == MSR_IA32_MISC_ENABLE )
+ {
+ if ( vpmu_is_set(vpmu, VPMU_CPU_HAS_BTS) )
+ *msr_content &= ~MSR_IA32_MISC_ENABLE_BTS_UNAVAIL;
+ }
+ else
+ return 0;
+ }
+
+ return 1;
+}
+
+static void core2_vpmu_do_cpuid(unsigned int input,
+ unsigned int *eax, unsigned int *ebx,
+ unsigned int *ecx, unsigned int *edx)
+{
+ if (input == 0x1)
+ {
+ struct vpmu_struct *vpmu = vcpu_vpmu(current);
+
+ if ( vpmu_is_set(vpmu, VPMU_CPU_HAS_DS) )
+ {
+ /* Switch on the 'Debug Store' feature in CPUID.EAX[1]:EDX[21] */
+ *edx |= cpufeat_mask(X86_FEATURE_DS);
+ if ( cpu_has(¤t_cpu_data, X86_FEATURE_DTES64) )
+ *ecx |= cpufeat_mask(X86_FEATURE_DTES64);
+ if ( cpu_has(¤t_cpu_data, X86_FEATURE_DSCPL) )
+ *ecx |= cpufeat_mask(X86_FEATURE_DSCPL);
+ }
+ }
+}
+
+/* Dump vpmu info on console, called in the context of keyhandler 'q'. */
+static void core2_vpmu_dump(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ int i;
+ struct core2_vpmu_context *core2_vpmu_cxt = NULL;
+ u64 val;
+
+ if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
+ return;
+
+ if ( !vpmu_is_set(vpmu, VPMU_RUNNING) )
+ {
+ if ( vpmu_set(vpmu, VPMU_CONTEXT_LOADED) )
+ printk(" vPMU loaded\n");
+ else
+ printk(" vPMU allocated\n");
+ return;
+ }
+
+ printk(" vPMU running\n");
+ core2_vpmu_cxt = vpmu->context;
+
+ /* Print the contents of the counter and its configuration msr. */
+ for ( i = 0; i < arch_pmc_cnt; i++ )
+ {
+ struct arch_msr_pair* msr_pair = core2_vpmu_cxt->arch_msr_pair;
+ if ( core2_vpmu_cxt->pmu_enable->arch_pmc_enable[i] )
+ printk(" general_%d: 0x%016lx ctrl: 0x%016lx\n",
+ i, msr_pair[i].counter, msr_pair[i].control);
+ }
+ /*
+ * The configuration of the fixed counter is 4 bits each in the
+ * MSR_CORE_PERF_FIXED_CTR_CTRL.
+ */
+ val = core2_vpmu_cxt->ctrls[MSR_CORE_PERF_FIXED_CTR_CTRL_IDX];
+ for ( i = 0; i < VPMU_CORE2_NUM_FIXED; i++ )
+ {
+ if ( core2_vpmu_cxt->pmu_enable->fixed_ctr_enable[i] )
+ printk(" fixed_%d: 0x%016lx ctrl: 0x%lx\n",
+ i, core2_vpmu_cxt->fix_counters[i],
+ val & FIXED_CTR_CTRL_MASK);
+ val >>= FIXED_CTR_CTRL_BITS;
+ }
+}
+
+static int core2_vpmu_do_interrupt(struct cpu_user_regs *regs)
+{
+ struct vcpu *v = current;
+ u64 msr_content;
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ struct core2_vpmu_context *core2_vpmu_cxt = vpmu->context;
+
+ rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, msr_content);
+ if ( msr_content )
+ {
+ if ( is_pmc_quirk )
+ handle_pmc_quirk(msr_content);
+ core2_vpmu_cxt->global_ovf_status |= msr_content;
+ msr_content = 0xC000000700000000 | ((1 << arch_pmc_cnt) - 1);
+ wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, msr_content);
+ }
+ else
+ {
+ /* No PMC overflow but perhaps a Trace Message interrupt. */
+ msr_content = __vmread(GUEST_IA32_DEBUGCTL);
+ if ( !(msr_content & IA32_DEBUGCTLMSR_TR) )
+ return 0;
+ }
+
+ /* HW sets the MASK bit when performance counter interrupt occurs*/
+ vpmu->hw_lapic_lvtpc = apic_read(APIC_LVTPC) & ~APIC_LVT_MASKED;
+ apic_write_around(APIC_LVTPC, vpmu->hw_lapic_lvtpc);
+
+ return 1;
+}
+
+static int core2_vpmu_initialise(struct vcpu *v, unsigned int vpmu_flags)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ u64 msr_content;
+ struct cpuinfo_x86 *c = ¤t_cpu_data;
+
+ if ( !(vpmu_flags & VPMU_INTEL_BTS) )
+ goto func_out;
+ /* Check the 'Debug Store' feature in the CPUID.EAX[1]:EDX[21] */
+ if ( cpu_has(c, X86_FEATURE_DS) )
+ {
+ if ( !cpu_has(c, X86_FEATURE_DTES64) )
+ {
+ printk(XENLOG_G_WARNING "CPU doesn't support 64-bit DS Area"
+ " - Debug Store disabled for d%d:v%d\n",
+ v->domain->domain_id, v->vcpu_id);
+ goto func_out;
+ }
+ vpmu_set(vpmu, VPMU_CPU_HAS_DS);
+ rdmsrl(MSR_IA32_MISC_ENABLE, msr_content);
+ if ( msr_content & MSR_IA32_MISC_ENABLE_BTS_UNAVAIL )
+ {
+ /* If BTS_UNAVAIL is set reset the DS feature. */
+ vpmu_reset(vpmu, VPMU_CPU_HAS_DS);
+ printk(XENLOG_G_WARNING "CPU has set BTS_UNAVAIL"
+ " - Debug Store disabled for d%d:v%d\n",
+ v->domain->domain_id, v->vcpu_id);
+ }
+ else
+ {
+ vpmu_set(vpmu, VPMU_CPU_HAS_BTS);
+ if ( !cpu_has(c, X86_FEATURE_DSCPL) )
+ printk(XENLOG_G_INFO
+ "vpmu: CPU doesn't support CPL-Qualified BTS\n");
+ printk("******************************************************\n");
+ printk("** WARNING: Emulation of BTS Feature is switched on **\n");
+ printk("** Using this processor feature in a virtualized **\n");
+ printk("** environment is not 100%% safe.
**\n");
+ printk("** Setting the DS buffer address with wrong values **\n");
+ printk("** may lead to hypervisor hangs or crashes. **\n");
+ printk("** It is NOT recommended for production use! **\n");
+ printk("******************************************************\n");
+ }
+ }
+func_out:
+
+ arch_pmc_cnt = core2_get_pmc_count();
+ check_pmc_quirk();
+
+ /* PV domains can allocate resources immediately */
+ if ( !is_hvm_domain(v->domain) )
+ if ( !core2_vpmu_alloc_resource(v) )
+ return 1;
+
+ return 0;
+}
+
+static void core2_vpmu_destroy(struct vcpu *v)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ struct core2_vpmu_context *core2_vpmu_cxt = vpmu->context;
+
+ if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
+ return;
+
+ if ( is_hvm_domain(v->domain) )
+ {
+ xfree(core2_vpmu_cxt->pmu_enable);
+ xfree(vpmu->context);
+ if ( cpu_has_vmx_msr_bitmap )
+ core2_vpmu_unset_msr_bitmap(v->arch.hvm_vmx.msr_bitmap);
+ }
+
+ release_pmu_ownship(PMU_OWNER_HVM);
+ vpmu_clear(vpmu);
+}
+
+struct arch_vpmu_ops core2_vpmu_ops = {
+ .do_wrmsr = core2_vpmu_do_wrmsr,
+ .do_rdmsr = core2_vpmu_do_rdmsr,
+ .do_interrupt = core2_vpmu_do_interrupt,
+ .do_cpuid = core2_vpmu_do_cpuid,
+ .arch_vpmu_destroy = core2_vpmu_destroy,
+ .arch_vpmu_save = core2_vpmu_save,
+ .arch_vpmu_load = core2_vpmu_load,
+ .arch_vpmu_dump = core2_vpmu_dump
+};
+
+static void core2_no_vpmu_do_cpuid(unsigned int input,
+ unsigned int *eax, unsigned int *ebx,
+ unsigned int *ecx, unsigned int *edx)
+{
+ /*
+ * As in this case the vpmu is not enabled reset some bits in the
+ * architectural performance monitoring related part.
+ */
+ if ( input == 0xa )
+ {
+ *eax &= ~PMU_VERSION_MASK;
+ *eax &= ~PMU_GENERAL_NR_MASK;
+ *eax &= ~PMU_GENERAL_WIDTH_MASK;
+
+ *edx &= ~PMU_FIXED_NR_MASK;
+ *edx &= ~PMU_FIXED_WIDTH_MASK;
+ }
+}
+
+/*
+ * If its a vpmu msr set it to 0.
+ */
+static int core2_no_vpmu_do_rdmsr(unsigned int msr, uint64_t *msr_content)
+{
+ int type = -1, index = -1;
+ if ( !is_core2_vpmu_msr(msr, &type, &index) )
+ return 0;
+ *msr_content = 0;
+ return 1;
+}
+
+/*
+ * These functions are used in case vpmu is not enabled.
+ */
+struct arch_vpmu_ops core2_no_vpmu_ops = {
+ .do_rdmsr = core2_no_vpmu_do_rdmsr,
+ .do_cpuid = core2_no_vpmu_do_cpuid,
+};
+
+int vmx_vpmu_initialise(struct vcpu *v, unsigned int vpmu_flags)
+{
+ struct vpmu_struct *vpmu = vcpu_vpmu(v);
+ uint8_t family = current_cpu_data.x86;
+ uint8_t cpu_model = current_cpu_data.x86_model;
+ int ret = 0;
+
+ vpmu->arch_vpmu_ops = &core2_no_vpmu_ops;
+ if ( vpmu_flags == VPMU_OFF )
+ return 0;
+
+ if ( family == 6 )
+ {
+ switch ( cpu_model )
+ {
+ /* Core2: */
+ case 0x0f: /* original 65 nm celeron/pentium/core2/xeon,
"Merom"/"Conroe" */
+ case 0x16: /* single-core 65 nm celeron/core2solo "Merom-L"/"Conroe-L"
*/
+ case 0x17: /* 45 nm celeron/core2/xeon "Penryn"/"Wolfdale" */
+ case 0x1d: /* six-core 45 nm xeon "Dunnington" */
+
+ case 0x2a: /* SandyBridge */
+ case 0x2d: /* SandyBridge, "Romley-EP" */
+
+ /* Nehalem: */
+ case 0x1a: /* 45 nm nehalem, "Bloomfield" */
+ case 0x1e: /* 45 nm nehalem, "Lynnfield", "Clarksfield", "Jasper
Forest" */
+ case 0x2e: /* 45 nm nehalem-ex, "Beckton" */
+
+ /* Westmere: */
+ case 0x25: /* 32 nm nehalem, "Clarkdale", "Arrandale" */
+ case 0x2c: /* 32 nm nehalem, "Gulftown", "Westmere-EP" */
+ case 0x27: /* 32 nm Westmere-EX */
+
+ case 0x3a: /* IvyBridge */
+ case 0x3e: /* IvyBridge EP */
+ case 0x3c: /* Haswell */
+ ret = core2_vpmu_initialise(v, vpmu_flags);
+ if ( !ret )
+ vpmu->arch_vpmu_ops = &core2_vpmu_ops;
+ return ret;
+ }
+ }
+
+ printk("VPMU: Initialization failed. "
+ "Intel processor family %d model %d has not "
+ "been supported\n", family, cpu_model);
+ return -EINVAL;
+}
+
diff --git a/xen/include/asm-x86/domain.h b/xen/include/asm-x86/domain.h
index 4f2247e..0b79d39 100644
--- a/xen/include/asm-x86/domain.h
+++ b/xen/include/asm-x86/domain.h
@@ -8,6 +8,7 @@
#include <asm/hvm/domain.h>
#include <asm/e820.h>
#include <asm/mce.h>
+#include <asm/vpmu.h>
#include <public/vcpu.h>
#define has_32bit_shinfo(d) ((d)->arch.has_32bit_shinfo)
diff --git a/xen/include/asm-x86/hvm/vmx/vmcs.h
b/xen/include/asm-x86/hvm/vmx/vmcs.h
index 5971613..beb959f 100644
--- a/xen/include/asm-x86/hvm/vmx/vmcs.h
+++ b/xen/include/asm-x86/hvm/vmx/vmcs.h
@@ -20,7 +20,6 @@
#define __ASM_X86_HVM_VMX_VMCS_H__
#include <asm/hvm/io.h>
-#include <asm/hvm/vpmu.h>
#include <irq_vectors.h>
extern void vmcs_dump_vcpu(struct vcpu *v);
diff --git a/xen/include/asm-x86/hvm/vpmu.h b/xen/include/asm-x86/hvm/vpmu.h
deleted file mode 100644
index f7f507f..0000000
--- a/xen/include/asm-x86/hvm/vpmu.h
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * vpmu.h: PMU virtualization for HVM domain.
- *
- * Copyright (c) 2007, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- * Author: Haitao Shan <haitao.shan@xxxxxxxxx>
- */
-
-#ifndef __ASM_X86_HVM_VPMU_H_
-#define __ASM_X86_HVM_VPMU_H_
-
-#include <public/xenpmu.h>
-
-
-#define vcpu_vpmu(vcpu) (&((vcpu)->arch.vpmu))
-#define vpmu_vcpu(vpmu) (container_of((vpmu), struct vcpu, \
- arch.vpmu))
-
-#define MSR_TYPE_COUNTER 0
-#define MSR_TYPE_CTRL 1
-#define MSR_TYPE_GLOBAL 2
-#define MSR_TYPE_ARCH_COUNTER 3
-#define MSR_TYPE_ARCH_CTRL 4
-
-
-/* Arch specific operations shared by all vpmus */
-struct arch_vpmu_ops {
- int (*do_wrmsr)(unsigned int msr, uint64_t msr_content);
- int (*do_rdmsr)(unsigned int msr, uint64_t *msr_content);
- int (*do_interrupt)(struct cpu_user_regs *regs);
- void (*do_cpuid)(unsigned int input,
- unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx);
- void (*arch_vpmu_destroy)(struct vcpu *v);
- int (*arch_vpmu_save)(struct vcpu *v);
- void (*arch_vpmu_load)(struct vcpu *v);
- void (*arch_vpmu_dump)(struct vcpu *v);
-};
-
-int vmx_vpmu_initialise(struct vcpu *, unsigned int flags);
-int svm_vpmu_initialise(struct vcpu *, unsigned int flags);
-
-struct vpmu_struct {
- u32 flags;
- u32 last_pcpu;
- u32 hw_lapic_lvtpc;
- void *context;
- struct arch_vpmu_ops *arch_vpmu_ops;
- xenpmu_data_t *xenpmu_data;
-};
-
-/* VPMU states */
-#define VPMU_CONTEXT_ALLOCATED 0x1
-#define VPMU_CONTEXT_LOADED 0x2
-#define VPMU_RUNNING 0x4
-#define VPMU_CONTEXT_SAVE 0x8 /* Force context save */
-#define VPMU_FROZEN 0x10 /* Stop counters while VCPU
is not running */
-#define VPMU_PASSIVE_DOMAIN_ALLOCATED 0x20
-#define VPMU_WAIT_FOR_FLUSH 0x40 /* PV guest waits for
XENPMU_flush */
-
-#define vpmu_set(_vpmu, _x) ((_vpmu)->flags |= (_x))
-#define vpmu_reset(_vpmu, _x) ((_vpmu)->flags &= ~(_x))
-#define vpmu_is_set(_vpmu, _x) ((_vpmu)->flags & (_x))
-#define vpmu_is_set_all(_vpmu, _x) (((_vpmu)->flags & (_x)) == (_x))
-#define vpmu_clear(_vpmu) ((_vpmu)->flags = 0)
-
-int vpmu_do_wrmsr(unsigned int msr, uint64_t msr_content);
-int vpmu_do_rdmsr(unsigned int msr, uint64_t *msr_content);
-int vpmu_do_interrupt(struct cpu_user_regs *regs);
-void vpmu_do_cpuid(unsigned int input, unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx);
-void vpmu_initialise(struct vcpu *v);
-void vpmu_destroy(struct vcpu *v);
-void vpmu_save(struct vcpu *v);
-void vpmu_load(struct vcpu *v);
-void vpmu_dump(struct vcpu *v);
-
-extern int acquire_pmu_ownership(int pmu_ownership);
-extern void release_pmu_ownership(int pmu_ownership);
-
-extern uint32_t vpmu_mode;
-
-#endif /* __ASM_X86_HVM_VPMU_H_*/
-
diff --git a/xen/include/asm-x86/vpmu.h b/xen/include/asm-x86/vpmu.h
new file mode 100644
index 0000000..f7f507f
--- /dev/null
+++ b/xen/include/asm-x86/vpmu.h
@@ -0,0 +1,97 @@
+/*
+ * vpmu.h: PMU virtualization for HVM domain.
+ *
+ * Copyright (c) 2007, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Author: Haitao Shan <haitao.shan@xxxxxxxxx>
+ */
+
+#ifndef __ASM_X86_HVM_VPMU_H_
+#define __ASM_X86_HVM_VPMU_H_
+
+#include <public/xenpmu.h>
+
+
+#define vcpu_vpmu(vcpu) (&((vcpu)->arch.vpmu))
+#define vpmu_vcpu(vpmu) (container_of((vpmu), struct vcpu, \
+ arch.vpmu))
+
+#define MSR_TYPE_COUNTER 0
+#define MSR_TYPE_CTRL 1
+#define MSR_TYPE_GLOBAL 2
+#define MSR_TYPE_ARCH_COUNTER 3
+#define MSR_TYPE_ARCH_CTRL 4
+
+
+/* Arch specific operations shared by all vpmus */
+struct arch_vpmu_ops {
+ int (*do_wrmsr)(unsigned int msr, uint64_t msr_content);
+ int (*do_rdmsr)(unsigned int msr, uint64_t *msr_content);
+ int (*do_interrupt)(struct cpu_user_regs *regs);
+ void (*do_cpuid)(unsigned int input,
+ unsigned int *eax, unsigned int *ebx,
+ unsigned int *ecx, unsigned int *edx);
+ void (*arch_vpmu_destroy)(struct vcpu *v);
+ int (*arch_vpmu_save)(struct vcpu *v);
+ void (*arch_vpmu_load)(struct vcpu *v);
+ void (*arch_vpmu_dump)(struct vcpu *v);
+};
+
+int vmx_vpmu_initialise(struct vcpu *, unsigned int flags);
+int svm_vpmu_initialise(struct vcpu *, unsigned int flags);
+
+struct vpmu_struct {
+ u32 flags;
+ u32 last_pcpu;
+ u32 hw_lapic_lvtpc;
+ void *context;
+ struct arch_vpmu_ops *arch_vpmu_ops;
+ xenpmu_data_t *xenpmu_data;
+};
+
+/* VPMU states */
+#define VPMU_CONTEXT_ALLOCATED 0x1
+#define VPMU_CONTEXT_LOADED 0x2
+#define VPMU_RUNNING 0x4
+#define VPMU_CONTEXT_SAVE 0x8 /* Force context save */
+#define VPMU_FROZEN 0x10 /* Stop counters while VCPU
is not running */
+#define VPMU_PASSIVE_DOMAIN_ALLOCATED 0x20
+#define VPMU_WAIT_FOR_FLUSH 0x40 /* PV guest waits for
XENPMU_flush */
+
+#define vpmu_set(_vpmu, _x) ((_vpmu)->flags |= (_x))
+#define vpmu_reset(_vpmu, _x) ((_vpmu)->flags &= ~(_x))
+#define vpmu_is_set(_vpmu, _x) ((_vpmu)->flags & (_x))
+#define vpmu_is_set_all(_vpmu, _x) (((_vpmu)->flags & (_x)) == (_x))
+#define vpmu_clear(_vpmu) ((_vpmu)->flags = 0)
+
+int vpmu_do_wrmsr(unsigned int msr, uint64_t msr_content);
+int vpmu_do_rdmsr(unsigned int msr, uint64_t *msr_content);
+int vpmu_do_interrupt(struct cpu_user_regs *regs);
+void vpmu_do_cpuid(unsigned int input, unsigned int *eax, unsigned int *ebx,
+ unsigned int *ecx, unsigned int *edx);
+void vpmu_initialise(struct vcpu *v);
+void vpmu_destroy(struct vcpu *v);
+void vpmu_save(struct vcpu *v);
+void vpmu_load(struct vcpu *v);
+void vpmu_dump(struct vcpu *v);
+
+extern int acquire_pmu_ownership(int pmu_ownership);
+extern void release_pmu_ownership(int pmu_ownership);
+
+extern uint32_t vpmu_mode;
+
+#endif /* __ASM_X86_HVM_VPMU_H_*/
+
--
1.8.1.4
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