Add new counters to measure how many vmread/vmwrite/vmlaunch/vmresume/vmclear
instructions were trapped and emulated by L0
Signed-off-by: Abel Gordon <abelg@xxxxxxxxxx>
---
arch/x86/include/asm/kvm_host.h | 6 ++++++
arch/x86/kvm/vmx.c | 7 +++++++
arch/x86/kvm/x86.c | 6 ++++++
3 files changed, 19 insertions(+)
--- .before/arch/x86/include/asm/kvm_host.h 2013-03-10 18:00:54.000000000 +0200
+++ .after/arch/x86/include/asm/kvm_host.h 2013-03-10 18:00:54.000000000 +0200
@@ -619,6 +619,12 @@ struct kvm_vcpu_stat {
u32 hypercalls;
u32 irq_injections;
u32 nmi_injections;
+ u32 nvmx_vmreads;
+ u32 nvmx_vmwrites;
+ u32 nvmx_vmptrlds;
+ u32 nvmx_vmlaunchs;
+ u32 nvmx_vmresumes;
+ u32 nvmx_vmclears;
};
struct x86_instruction_info;
--- .before/arch/x86/kvm/vmx.c 2013-03-10 18:00:54.000000000 +0200
+++ .after/arch/x86/kvm/vmx.c 2013-03-10 18:00:54.000000000 +0200
@@ -5545,6 +5545,7 @@ static int handle_vmclear(struct kvm_vcp
struct vmcs12 *vmcs12;
struct page *page;
struct x86_exception e;
+ ++vcpu->stat.nvmx_vmclears;
if (!nested_vmx_check_permission(vcpu))
return 1;
@@ -5601,12 +5602,14 @@ static int nested_vmx_run(struct kvm_vcp
/* Emulate the VMLAUNCH instruction */
static int handle_vmlaunch(struct kvm_vcpu *vcpu)
{
+ ++vcpu->stat.nvmx_vmlaunchs;
return nested_vmx_run(vcpu, true);
}
/* Emulate the VMRESUME instruction */
static int handle_vmresume(struct kvm_vcpu *vcpu)
{
+ ++vcpu->stat.nvmx_vmresumes;
return nested_vmx_run(vcpu, false);
}
@@ -5689,6 +5692,7 @@ static int handle_vmread(struct kvm_vcpu
u32 vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
gva_t gva = 0;
+ ++vcpu->stat.nvmx_vmreads;
if (!nested_vmx_check_permission(vcpu) ||
!nested_vmx_check_vmcs12(vcpu))
return 1;
@@ -5741,6 +5745,8 @@ static int handle_vmwrite(struct kvm_vcp
u64 field_value = 0;
struct x86_exception e;
+ ++vcpu->stat.nvmx_vmwrites;
+
if (!nested_vmx_check_permission(vcpu) ||
!nested_vmx_check_vmcs12(vcpu))
return 1;
@@ -5807,6 +5813,7 @@ static int handle_vmptrld(struct kvm_vcp
gva_t gva;
gpa_t vmptr;
struct x86_exception e;
+ ++vcpu->stat.nvmx_vmptrlds;
if (!nested_vmx_check_permission(vcpu))
return 1;
--- .before/arch/x86/kvm/x86.c 2013-03-10 18:00:54.000000000 +0200
+++ .after/arch/x86/kvm/x86.c 2013-03-10 18:00:54.000000000 +0200
@@ -145,6 +145,12 @@ struct kvm_stats_debugfs_item debugfs_en
{ "insn_emulation_fail", VCPU_STAT(insn_emulation_fail) },
{ "irq_injections", VCPU_STAT(irq_injections) },
{ "nmi_injections", VCPU_STAT(nmi_injections) },
+ { "nvmx_vmreads", VCPU_STAT(nvmx_vmreads) },
+ { "nvmx_vmwrites", VCPU_STAT(nvmx_vmwrites) },
+ { "nvmx_vmptrlds", VCPU_STAT(nvmx_vmptrlds) },
+ { "nvmx_vmlaunchs", VCPU_STAT(nvmx_vmlaunchs) },
+ { "nvmx_vmresumes", VCPU_STAT(nvmx_vmresumes) },
+ { "nvmx_vmclears", VCPU_STAT(nvmx_vmclears) },
{ "mmu_shadow_zapped", VM_STAT(mmu_shadow_zapped) },
{ "mmu_pte_write", VM_STAT(mmu_pte_write) },
{ "mmu_pte_updated", VM_STAT(mmu_pte_updated) },
--
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