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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] vmx: Caching the VMCS field EXCEPTION_BITMAP and cleanup some unused function.
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1284395084 -3600
# Node ID 767e3f4366f89fd23b398c8f7168172c03449675
# Parent 78b16cd326dd51bf577ed2ff7cf657baca96a70d
vmx: Caching the VMCS field EXCEPTION_BITMAP and cleanup some unused function.
Signed-off-by: Qing He <qing.he@xxxxxxxxx>
Signed-off-by: Eddie Dong <eddie.dong@xxxxxxxxx>
---
xen/arch/x86/hvm/vmx/vmcs.c | 6 +++---
xen/arch/x86/hvm/vmx/vmx.c | 29 ++++++++++++++++++-----------
xen/include/asm-x86/hvm/vmx/vmcs.h | 1 +
xen/include/asm-x86/hvm/vmx/vmx.h | 12 ++----------
4 files changed, 24 insertions(+), 24 deletions(-)
diff -r 78b16cd326dd -r 767e3f4366f8 xen/arch/x86/hvm/vmx/vmcs.c
--- a/xen/arch/x86/hvm/vmx/vmcs.c Mon Sep 13 17:24:10 2010 +0100
+++ b/xen/arch/x86/hvm/vmx/vmcs.c Mon Sep 13 17:24:44 2010 +0100
@@ -839,10 +839,10 @@ static int construct_vmcs(struct vcpu *v
__vmwrite(VMCS_LINK_POINTER_HIGH, ~0UL);
#endif
- __vmwrite(EXCEPTION_BITMAP,
- HVM_TRAP_MASK
+ v->arch.hvm_vmx.exception_bitmap = HVM_TRAP_MASK
| (paging_mode_hap(d) ? 0 : (1U << TRAP_page_fault))
- | (1U << TRAP_no_device));
+ | (1U << TRAP_no_device);
+ vmx_update_exception_bitmap(v);
v->arch.hvm_vcpu.guest_cr[0] = X86_CR0_PE | X86_CR0_ET;
hvm_update_guest_cr(v, 0);
diff -r 78b16cd326dd -r 767e3f4366f8 xen/arch/x86/hvm/vmx/vmx.c
--- a/xen/arch/x86/hvm/vmx/vmx.c Mon Sep 13 17:24:10 2010 +0100
+++ b/xen/arch/x86/hvm/vmx/vmx.c Mon Sep 13 17:24:44 2010 +0100
@@ -385,6 +385,11 @@ long_mode_do_msr_write(unsigned int msr,
#endif /* __i386__ */
+void vmx_update_exception_bitmap(struct vcpu *v)
+{
+ __vmwrite(EXCEPTION_BITMAP, v->arch.hvm_vmx.exception_bitmap);
+}
+
static int vmx_guest_x86_mode(struct vcpu *v)
{
unsigned int cs_ar_bytes;
@@ -623,7 +628,8 @@ static void vmx_fpu_enter(struct vcpu *v
static void vmx_fpu_enter(struct vcpu *v)
{
setup_fpu(v);
- __vm_clear_bit(EXCEPTION_BITMAP, TRAP_no_device);
+ v->arch.hvm_vmx.exception_bitmap &= ~(1u << TRAP_no_device);
+ vmx_update_exception_bitmap(v);
v->arch.hvm_vmx.host_cr0 &= ~X86_CR0_TS;
__vmwrite(HOST_CR0, v->arch.hvm_vmx.host_cr0);
}
@@ -649,7 +655,8 @@ static void vmx_fpu_leave(struct vcpu *v
{
v->arch.hvm_vcpu.hw_cr[0] |= X86_CR0_TS;
__vmwrite(GUEST_CR0, v->arch.hvm_vcpu.hw_cr[0]);
- __vm_set_bit(EXCEPTION_BITMAP, TRAP_no_device);
+ v->arch.hvm_vmx.exception_bitmap |= (1u << TRAP_no_device);
+ vmx_update_exception_bitmap(v);
}
}
@@ -1049,7 +1056,7 @@ static void vmx_update_host_cr3(struct v
void vmx_update_debug_state(struct vcpu *v)
{
- unsigned long intercepts, mask;
+ unsigned long mask;
ASSERT(v == current);
@@ -1057,12 +1064,11 @@ void vmx_update_debug_state(struct vcpu
if ( !cpu_has_monitor_trap_flag )
mask |= 1u << TRAP_debug;
- intercepts = __vmread(EXCEPTION_BITMAP);
if ( v->arch.hvm_vcpu.debug_state_latch )
- intercepts |= mask;
+ v->arch.hvm_vmx.exception_bitmap |= mask;
else
- intercepts &= ~mask;
- __vmwrite(EXCEPTION_BITMAP, intercepts);
+ v->arch.hvm_vmx.exception_bitmap &= ~mask;
+ vmx_update_exception_bitmap(v);
}
static void vmx_update_guest_cr(struct vcpu *v, unsigned int cr)
@@ -1124,7 +1130,8 @@ static void vmx_update_guest_cr(struct v
vmx_set_segment_register(v, s, ®[s]);
v->arch.hvm_vcpu.hw_cr[4] |= X86_CR4_VME;
__vmwrite(GUEST_CR4, v->arch.hvm_vcpu.hw_cr[4]);
- __vmwrite(EXCEPTION_BITMAP, 0xffffffff);
+ v->arch.hvm_vmx.exception_bitmap = 0xffffffff;
+ vmx_update_exception_bitmap(v);
}
else
{
@@ -1136,11 +1143,11 @@ static void vmx_update_guest_cr(struct v
((v->arch.hvm_vcpu.hw_cr[4] & ~X86_CR4_VME)
|(v->arch.hvm_vcpu.guest_cr[4] & X86_CR4_VME));
__vmwrite(GUEST_CR4, v->arch.hvm_vcpu.hw_cr[4]);
- __vmwrite(EXCEPTION_BITMAP,
- HVM_TRAP_MASK
+ v->arch.hvm_vmx.exception_bitmap = HVM_TRAP_MASK
| (paging_mode_hap(v->domain) ?
0 : (1U << TRAP_page_fault))
- | (1U << TRAP_no_device));
+ | (1U << TRAP_no_device);
+ vmx_update_exception_bitmap(v);
vmx_update_debug_state(v);
}
}
diff -r 78b16cd326dd -r 767e3f4366f8 xen/include/asm-x86/hvm/vmx/vmcs.h
--- a/xen/include/asm-x86/hvm/vmx/vmcs.h Mon Sep 13 17:24:10 2010 +0100
+++ b/xen/include/asm-x86/hvm/vmx/vmcs.h Mon Sep 13 17:24:44 2010 +0100
@@ -97,6 +97,7 @@ struct arch_vmx_struct {
/* Cache of cpu execution control. */
u32 exec_control;
u32 secondary_exec_control;
+ u32 exception_bitmap;
#ifdef __x86_64__
struct vmx_msr_state msr_state;
diff -r 78b16cd326dd -r 767e3f4366f8 xen/include/asm-x86/hvm/vmx/vmx.h
--- a/xen/include/asm-x86/hvm/vmx/vmx.h Mon Sep 13 17:24:10 2010 +0100
+++ b/xen/include/asm-x86/hvm/vmx/vmx.h Mon Sep 13 17:24:44 2010 +0100
@@ -60,6 +60,8 @@ void vmx_vlapic_msr_changed(struct vcpu
void vmx_vlapic_msr_changed(struct vcpu *v);
void vmx_realmode(struct cpu_user_regs *regs);
void vmx_update_debug_state(struct vcpu *v);
+void vmx_update_exception_bitmap(struct vcpu *v);
+
/*
* Exit Reasons
@@ -292,16 +294,6 @@ static inline unsigned long __vmread_saf
return ecx;
}
-static inline void __vm_set_bit(unsigned long field, unsigned int bit)
-{
- __vmwrite(field, __vmread(field) | (1UL << bit));
-}
-
-static inline void __vm_clear_bit(unsigned long field, unsigned int bit)
-{
- __vmwrite(field, __vmread(field) & ~(1UL << bit));
-}
-
static inline void __invept(int type, u64 eptp, u64 gpa)
{
struct {
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