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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH V7 06/12] x86/hvm: factor out and rename vm_event related functions
To avoid growing hvm.c these functions can be stored separately. Minor style
changes are applied to the logic in the file.
Signed-off-by: Tamas K Lengyel <tamas.lengyel@xxxxxxxxxxxx>
Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>
Acked-by: Tim Deegan <tim@xxxxxxx>
---
v6: Style fixes
v5: Style fixes
Fix hvm_event_msr input types to match the incoming variables
v4: Style fixes
v3: Style fixes and removing unused fields from msr events.
---
MAINTAINERS | 1 +
xen/arch/x86/hvm/Makefile | 3 +-
xen/arch/x86/hvm/event.c | 184 ++++++++++++++++++++++++++++++++++++++++
xen/arch/x86/hvm/hvm.c | 152 ++-------------------------------
xen/arch/x86/hvm/vmx/vmx.c | 7 +-
xen/include/asm-x86/hvm/event.h | 40 +++++++++
xen/include/asm-x86/hvm/hvm.h | 11 ---
7 files changed, 236 insertions(+), 162 deletions(-)
create mode 100644 xen/arch/x86/hvm/event.c
create mode 100644 xen/include/asm-x86/hvm/event.h
diff --git a/MAINTAINERS b/MAINTAINERS
index e43432e..13eaf50 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -378,6 +378,7 @@ M: Tim Deegan <tim@xxxxxxx>
S: Supported
F: xen/common/vm_event.c
F: xen/common/mem_access.c
+F: xen/arch/x86/hvm/event.c
XENTRACE
M: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
diff --git a/xen/arch/x86/hvm/Makefile b/xen/arch/x86/hvm/Makefile
index eea5555..69af47f 100644
--- a/xen/arch/x86/hvm/Makefile
+++ b/xen/arch/x86/hvm/Makefile
@@ -3,6 +3,7 @@ subdir-y += vmx
obj-y += asid.o
obj-y += emulate.o
+obj-y += event.o
obj-y += hpet.o
obj-y += hvm.o
obj-y += i8254.o
@@ -22,4 +23,4 @@ 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
+obj-y += vpmu.o
diff --git a/xen/arch/x86/hvm/event.c b/xen/arch/x86/hvm/event.c
new file mode 100644
index 0000000..dfb0ab7
--- /dev/null
+++ b/xen/arch/x86/hvm/event.c
@@ -0,0 +1,184 @@
+/*
+* event.c: Common hardware virtual machine event abstractions.
+*
+* Copyright (c) 2004, Intel Corporation.
+* Copyright (c) 2005, International Business Machines Corporation.
+* Copyright (c) 2008, Citrix Systems, Inc.
+*
+* 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/vm_event.h>
+#include <xen/paging.h>
+#include <public/vm_event.h>
+
+static void hvm_event_fill_regs(vm_event_request_t *req)
+{
+ const struct cpu_user_regs *regs = guest_cpu_user_regs();
+ const struct vcpu *curr = current;
+
+ req->regs.x86.rax = regs->eax;
+ req->regs.x86.rcx = regs->ecx;
+ req->regs.x86.rdx = regs->edx;
+ req->regs.x86.rbx = regs->ebx;
+ req->regs.x86.rsp = regs->esp;
+ req->regs.x86.rbp = regs->ebp;
+ req->regs.x86.rsi = regs->esi;
+ req->regs.x86.rdi = regs->edi;
+
+ req->regs.x86.r8 = regs->r8;
+ req->regs.x86.r9 = regs->r9;
+ req->regs.x86.r10 = regs->r10;
+ req->regs.x86.r11 = regs->r11;
+ req->regs.x86.r12 = regs->r12;
+ req->regs.x86.r13 = regs->r13;
+ req->regs.x86.r14 = regs->r14;
+ req->regs.x86.r15 = regs->r15;
+
+ req->regs.x86.rflags = regs->eflags;
+ req->regs.x86.rip = regs->eip;
+
+ req->regs.x86.msr_efer = curr->arch.hvm_vcpu.guest_efer;
+ req->regs.x86.cr0 = curr->arch.hvm_vcpu.guest_cr[0];
+ req->regs.x86.cr3 = curr->arch.hvm_vcpu.guest_cr[3];
+ req->regs.x86.cr4 = curr->arch.hvm_vcpu.guest_cr[4];
+}
+
+static int hvm_event_traps(uint64_t parameters, vm_event_request_t *req)
+{
+ int rc;
+ struct vcpu *curr = current;
+ struct domain *currd = curr->domain;
+
+ if ( !(parameters & HVMPME_MODE_MASK) )
+ return 0;
+
+ rc = vm_event_claim_slot(currd, &currd->vm_event->monitor);
+ switch ( rc )
+ {
+ case 0:
+ break;
+ case -ENOSYS:
+ /*
+ * If there was no ring to handle the event, then
+ * simply continue executing normally.
+ */
+ return 1;
+ default:
+ return rc;
+ };
+
+ if ( (parameters & HVMPME_MODE_MASK) == HVMPME_mode_sync )
+ {
+ req->flags |= VM_EVENT_FLAG_VCPU_PAUSED;
+ vm_event_vcpu_pause(curr);
+ }
+
+ hvm_event_fill_regs(req);
+ vm_event_put_request(currd, &currd->vm_event->monitor, req);
+
+ return 1;
+}
+
+static void hvm_event_cr(uint32_t reason, unsigned long value,
+ unsigned long old, uint64_t parameters)
+{
+ vm_event_request_t req = {
+ .reason = reason,
+ .vcpu_id = current->vcpu_id,
+ .u.mov_to_cr.new_value = value,
+ .u.mov_to_cr.old_value = old
+ };
+
+ if ( (parameters & HVMPME_onchangeonly) && (value == old) )
+ return;
+
+ hvm_event_traps(parameters, &req);
+}
+
+void hvm_event_cr0(unsigned long value, unsigned long old)
+{
+ hvm_event_cr(VM_EVENT_REASON_MOV_TO_CR0, value, old,
+ current->domain->arch.hvm_domain
+ .params[HVM_PARAM_MEMORY_EVENT_CR0]);
+}
+
+void hvm_event_cr3(unsigned long value, unsigned long old)
+{
+ hvm_event_cr(VM_EVENT_REASON_MOV_TO_CR3, value, old,
+ current->domain->arch.hvm_domain
+ .params[HVM_PARAM_MEMORY_EVENT_CR3]);
+}
+
+void hvm_event_cr4(unsigned long value, unsigned long old)
+{
+ hvm_event_cr(VM_EVENT_REASON_MOV_TO_CR4, value, old,
+ current->domain->arch.hvm_domain
+ .params[HVM_PARAM_MEMORY_EVENT_CR4]);
+}
+
+void hvm_event_msr(unsigned int msr, uint64_t value)
+{
+ struct vcpu *curr = current;
+ vm_event_request_t req = {
+ .reason = VM_EVENT_REASON_MOV_TO_MSR,
+ .vcpu_id = curr->vcpu_id,
+ .u.mov_to_msr.msr = msr,
+ .u.mov_to_msr.value = value,
+ };
+ uint64_t params = curr->domain->arch.hvm_domain
+ .params[HVM_PARAM_MEMORY_EVENT_MSR];
+
+ hvm_event_traps(params, &req);
+}
+
+int hvm_event_int3(unsigned long gla)
+{
+ uint32_t pfec = PFEC_page_present;
+ struct vcpu *curr = current;
+ vm_event_request_t req = {
+ .reason = VM_EVENT_REASON_SOFTWARE_BREAKPOINT,
+ .vcpu_id = curr->vcpu_id,
+ .u.software_breakpoint.gfn = paging_gva_to_gfn(curr, gla, &pfec)
+ };
+ uint64_t params = curr->domain->arch.hvm_domain
+ .params[HVM_PARAM_MEMORY_EVENT_INT3];
+
+ return hvm_event_traps(params, &req);
+}
+
+int hvm_event_single_step(unsigned long gla)
+{
+ uint32_t pfec = PFEC_page_present;
+ struct vcpu *curr = current;
+ vm_event_request_t req = {
+ .reason = VM_EVENT_REASON_SINGLESTEP,
+ .vcpu_id = curr->vcpu_id,
+ .u.singlestep.gfn = paging_gva_to_gfn(curr, gla, &pfec)
+ };
+ uint64_t params = curr->domain->arch.hvm_domain
+ .params[HVM_PARAM_MEMORY_EVENT_SINGLE_STEP];
+
+ return hvm_event_traps(params, &req);
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index 200b131..2c16aaf 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -35,7 +35,6 @@
#include <xen/paging.h>
#include <xen/cpu.h>
#include <xen/wait.h>
-#include <xen/vm_event.h>
#include <xen/mem_access.h>
#include <xen/rangeset.h>
#include <asm/shadow.h>
@@ -60,6 +59,7 @@
#include <asm/hvm/cacheattr.h>
#include <asm/hvm/trace.h>
#include <asm/hvm/nestedhvm.h>
+#include <asm/hvm/event.h>
#include <asm/mtrr.h>
#include <asm/apic.h>
#include <public/sched.h>
@@ -3291,7 +3291,7 @@ int hvm_set_cr0(unsigned long value)
hvm_funcs.handle_cd(v, value);
hvm_update_cr(v, 0, value);
- hvm_memory_event_cr0(value, old_value);
+ hvm_event_cr0(value, old_value);
if ( (value ^ old_value) & X86_CR0_PG ) {
if ( !nestedhvm_vmswitch_in_progress(v) &&
nestedhvm_vcpu_in_guestmode(v) )
@@ -3332,7 +3332,7 @@ int hvm_set_cr3(unsigned long value)
old=v->arch.hvm_vcpu.guest_cr[3];
v->arch.hvm_vcpu.guest_cr[3] = value;
paging_update_cr3(v);
- hvm_memory_event_cr3(value, old);
+ hvm_event_cr3(value, old);
return X86EMUL_OKAY;
bad_cr3:
@@ -3373,7 +3373,7 @@ int hvm_set_cr4(unsigned long value)
}
hvm_update_cr(v, 4, value);
- hvm_memory_event_cr4(value, old_cr);
+ hvm_event_cr4(value, old_cr);
/*
* Modifying CR4.{PSE,PAE,PGE,SMEP}, or clearing CR4.PCIDE
@@ -4552,7 +4552,7 @@ int hvm_msr_write_intercept(unsigned int msr, uint64_t
msr_content)
hvm_cpuid(1, NULL, NULL, NULL, &edx);
mtrr = !!(edx & cpufeat_mask(X86_FEATURE_MTRR));
- hvm_memory_event_msr(msr, msr_content);
+ hvm_event_msr(msr, msr_content);
switch ( msr )
{
@@ -6361,148 +6361,6 @@ int hvm_debug_op(struct vcpu *v, int32_t op)
return rc;
}
-static void hvm_mem_event_fill_regs(vm_event_request_t *req)
-{
- const struct cpu_user_regs *regs = guest_cpu_user_regs();
- const struct vcpu *curr = current;
-
- req->regs.x86.rax = regs->eax;
- req->regs.x86.rcx = regs->ecx;
- req->regs.x86.rdx = regs->edx;
- req->regs.x86.rbx = regs->ebx;
- req->regs.x86.rsp = regs->esp;
- req->regs.x86.rbp = regs->ebp;
- req->regs.x86.rsi = regs->esi;
- req->regs.x86.rdi = regs->edi;
-
- req->regs.x86.r8 = regs->r8;
- req->regs.x86.r9 = regs->r9;
- req->regs.x86.r10 = regs->r10;
- req->regs.x86.r11 = regs->r11;
- req->regs.x86.r12 = regs->r12;
- req->regs.x86.r13 = regs->r13;
- req->regs.x86.r14 = regs->r14;
- req->regs.x86.r15 = regs->r15;
-
- req->regs.x86.rflags = regs->eflags;
- req->regs.x86.rip = regs->eip;
-
- req->regs.x86.msr_efer = curr->arch.hvm_vcpu.guest_efer;
- req->regs.x86.cr0 = curr->arch.hvm_vcpu.guest_cr[0];
- req->regs.x86.cr3 = curr->arch.hvm_vcpu.guest_cr[3];
- req->regs.x86.cr4 = curr->arch.hvm_vcpu.guest_cr[4];
-}
-
-static int hvm_memory_event_traps(uint64_t parameters, vm_event_request_t *req)
-{
- int rc;
- struct vcpu *v = current;
- struct domain *d = v->domain;
-
- if ( !(parameters & HVMPME_MODE_MASK) )
- return 0;
-
- rc = vm_event_claim_slot(d, &d->vm_event->monitor);
- if ( rc == -ENOSYS )
- {
- /* If there was no ring to handle the event, then
- * simple continue executing normally. */
- return 1;
- }
- else if ( rc < 0 )
- return rc;
-
- if ( (parameters & HVMPME_MODE_MASK) == HVMPME_mode_sync )
- {
- req->flags |= VM_EVENT_FLAG_VCPU_PAUSED;
- vm_event_vcpu_pause(v);
- }
-
- hvm_mem_event_fill_regs(req);
- vm_event_put_request(d, &d->vm_event->monitor, req);
-
- return 1;
-}
-
-static void hvm_memory_event_cr(uint32_t reason, unsigned long value,
- unsigned long old, uint64_t parameters)
-{
- vm_event_request_t req = {
- .reason = reason,
- .vcpu_id = current->vcpu_id,
- .u.mov_to_cr.new_value = value,
- .u.mov_to_cr.old_value = old
- };
-
- if ( (parameters & HVMPME_onchangeonly) && (value == old) )
- return;
-
- hvm_memory_event_traps(parameters, &req);
-}
-
-void hvm_memory_event_cr0(unsigned long value, unsigned long old)
-{
- hvm_memory_event_cr(VM_EVENT_REASON_MOV_TO_CR0, value, old,
- current->domain->arch.hvm_domain
- .params[HVM_PARAM_MEMORY_EVENT_CR0]);
-}
-
-void hvm_memory_event_cr3(unsigned long value, unsigned long old)
-{
- hvm_memory_event_cr(VM_EVENT_REASON_MOV_TO_CR3, value, old,
- current->domain->arch.hvm_domain
- .params[HVM_PARAM_MEMORY_EVENT_CR3]);
-}
-
-void hvm_memory_event_cr4(unsigned long value, unsigned long old)
-{
- hvm_memory_event_cr(VM_EVENT_REASON_MOV_TO_CR4, value, old,
- current->domain->arch.hvm_domain
- .params[HVM_PARAM_MEMORY_EVENT_CR4]);
-}
-
-void hvm_memory_event_msr(unsigned long msr, unsigned long value)
-{
- vm_event_request_t req = {
- .reason = VM_EVENT_REASON_MOV_TO_MSR,
- .vcpu_id = current->vcpu_id,
- .u.mov_to_msr.msr = msr,
- .u.mov_to_msr.value = value,
- };
-
- hvm_memory_event_traps(current->domain->arch.hvm_domain
- .params[HVM_PARAM_MEMORY_EVENT_MSR],
- &req);
-}
-
-int hvm_memory_event_int3(unsigned long gla)
-{
- uint32_t pfec = PFEC_page_present;
- vm_event_request_t req = {
- .reason = VM_EVENT_REASON_SOFTWARE_BREAKPOINT,
- .vcpu_id = current->vcpu_id,
- .u.software_breakpoint.gfn = paging_gva_to_gfn(current, gla, &pfec)
- };
-
- return hvm_memory_event_traps(current->domain->arch.hvm_domain
- .params[HVM_PARAM_MEMORY_EVENT_INT3],
- &req);
-}
-
-int hvm_memory_event_single_step(unsigned long gla)
-{
- uint32_t pfec = PFEC_page_present;
- vm_event_request_t req = {
- .reason = VM_EVENT_REASON_SINGLESTEP,
- .vcpu_id = current->vcpu_id,
- .u.singlestep.gfn = paging_gva_to_gfn(current, gla, &pfec)
- };
-
- return hvm_memory_event_traps(current->domain->arch.hvm_domain
- .params[HVM_PARAM_MEMORY_EVENT_SINGLE_STEP],
- &req);
-}
-
int nhvm_vcpu_hostrestore(struct vcpu *v, struct cpu_user_regs *regs)
{
if (hvm_funcs.nhvm_vcpu_hostrestore)
diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c
index e1c55ce..23aa768 100644
--- a/xen/arch/x86/hvm/vmx/vmx.c
+++ b/xen/arch/x86/hvm/vmx/vmx.c
@@ -52,6 +52,7 @@
#include <asm/hvm/vpt.h>
#include <public/hvm/save.h>
#include <asm/hvm/trace.h>
+#include <asm/hvm/event.h>
#include <asm/xenoprof.h>
#include <asm/debugger.h>
#include <asm/apic.h>
@@ -1979,7 +1980,7 @@ static int vmx_cr_access(unsigned long exit_qualification)
unsigned long old = curr->arch.hvm_vcpu.guest_cr[0];
curr->arch.hvm_vcpu.guest_cr[0] &= ~X86_CR0_TS;
vmx_update_guest_cr(curr, 0);
- hvm_memory_event_cr0(curr->arch.hvm_vcpu.guest_cr[0], old);
+ hvm_event_cr0(curr->arch.hvm_vcpu.guest_cr[0], old);
HVMTRACE_0D(CLTS);
break;
}
@@ -2831,7 +2832,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
break;
}
else {
- int handled = hvm_memory_event_int3(regs->eip);
+ int handled = hvm_event_int3(regs->eip);
if ( handled < 0 )
{
@@ -3149,7 +3150,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs)
v->arch.hvm_vmx.exec_control &= ~CPU_BASED_MONITOR_TRAP_FLAG;
vmx_update_cpu_exec_control(v);
if ( v->arch.hvm_vcpu.single_step ) {
- hvm_memory_event_single_step(regs->eip);
+ hvm_event_single_step(regs->eip);
if ( v->domain->debugger_attached )
domain_pause_for_debugger();
}
diff --git a/xen/include/asm-x86/hvm/event.h b/xen/include/asm-x86/hvm/event.h
new file mode 100644
index 0000000..bb757a1
--- /dev/null
+++ b/xen/include/asm-x86/hvm/event.h
@@ -0,0 +1,40 @@
+/*
+ * event.h: Hardware virtual machine assist events.
+ *
+ * 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.
+ */
+
+#ifndef __ASM_X86_HVM_EVENT_H__
+#define __ASM_X86_HVM_EVENT_H__
+
+/* Called for current VCPU on crX/MSR changes by guest */
+void hvm_event_cr0(unsigned long value, unsigned long old);
+void hvm_event_cr3(unsigned long value, unsigned long old);
+void hvm_event_cr4(unsigned long value, unsigned long old);
+void hvm_event_msr(unsigned int msr, uint64_t value);
+/* Called for current VCPU: returns -1 if no listener */
+int hvm_event_int3(unsigned long gla);
+int hvm_event_single_step(unsigned long gla);
+
+#endif /* __ASM_X86_HVM_EVENT_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/include/asm-x86/hvm/hvm.h b/xen/include/asm-x86/hvm/hvm.h
index 0dc909b..77eeac5 100644
--- a/xen/include/asm-x86/hvm/hvm.h
+++ b/xen/include/asm-x86/hvm/hvm.h
@@ -475,17 +475,6 @@ int hvm_hap_nested_page_fault(paddr_t gpa, unsigned long
gla,
int hvm_x2apic_msr_read(struct vcpu *v, unsigned int msr, uint64_t
*msr_content);
int hvm_x2apic_msr_write(struct vcpu *v, unsigned int msr, uint64_t
msr_content);
-/* Called for current VCPU on crX changes by guest */
-void hvm_memory_event_cr0(unsigned long value, unsigned long old);
-void hvm_memory_event_cr3(unsigned long value, unsigned long old);
-void hvm_memory_event_cr4(unsigned long value, unsigned long old);
-void hvm_memory_event_msr(unsigned long msr, unsigned long value);
-/* Called for current VCPU on int3: returns -1 if no listener */
-int hvm_memory_event_int3(unsigned long gla);
-
-/* Called for current VCPU on single step: returns -1 if no listener */
-int hvm_memory_event_single_step(unsigned long gla);
-
/*
* Nested HVM
*/
--
2.1.4
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