Add new counters to measure how many vmread/vmwrite/vmlaunch/vmresume/vmclear instructions were trapped and emulated by L0
Signed-off-by: Abel Gordon <[email protected]> --- 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) }, -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
