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Add a counter to differentiate between VM-exits due to nested paging faults

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and instruction emulation faults.
This commit is contained in:
Neel Natu 2014-02-08 06:22:09 +00:00
parent 5f62f8cdcb
commit bf73979dd9
3 changed files with 6 additions and 3 deletions
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3
sys/amd64/vmm/intel/vmx.c
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@ -1725,7 +1725,6 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_exit *vmexit)
return (1);
break;
case EXIT_REASON_EPT_FAULT:
vmm_stat_incr(vmx->vm, vcpu, VMEXIT_EPT_FAULT, 1);
/*
* If 'gpa' lies within the address space allocated to
* memory then this must be a nested page fault otherwise
@ -1736,6 +1735,7 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_exit *vmexit)
vmexit->exitcode = VM_EXITCODE_PAGING;
vmexit->u.paging.gpa = gpa;
vmexit->u.paging.fault_type = ept_fault_type(qual);
vmm_stat_incr(vmx->vm, vcpu, VMEXIT_NESTED_FAULT, 1);
} else if (ept_emulation_fault(qual)) {
vmexit->exitcode = VM_EXITCODE_INST_EMUL;
vmexit->u.inst_emul.gpa = gpa;
@ -1743,6 +1743,7 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_exit *vmexit)
vmexit->u.inst_emul.cr3 = vmcs_guest_cr3();
vmexit->u.inst_emul.cpu_mode = vmx_cpu_mode();
vmexit->u.inst_emul.paging_mode = vmx_paging_mode();
vmm_stat_incr(vmx->vm, vcpu, VMEXIT_INST_EMUL, 1);
}
/*
* If Virtual NMIs control is 1 and the VM-exit is due to an

3
sys/amd64/vmm/vmm_stat.c
View File

@ -146,7 +146,8 @@ VMM_STAT(VMEXIT_INTR_WINDOW, "vm exits due to interrupt window opening");
VMM_STAT(VMEXIT_NMI_WINDOW, "vm exits due to nmi window opening");
VMM_STAT(VMEXIT_INOUT, "number of times in/out was intercepted");
VMM_STAT(VMEXIT_CPUID, "number of times cpuid was intercepted");
VMM_STAT(VMEXIT_EPT_FAULT, "vm exits due to nested page fault");
VMM_STAT(VMEXIT_NESTED_FAULT, "vm exits due to nested page fault");
VMM_STAT(VMEXIT_INST_EMUL, "vm exits for instruction emulation");
VMM_STAT(VMEXIT_UNKNOWN, "number of vm exits for unknown reason");
VMM_STAT(VMEXIT_ASTPENDING, "number of times astpending at exit");
VMM_STAT(VMEXIT_USERSPACE, "number of vm exits handled in userspace");

3
sys/amd64/vmm/vmm_stat.h
View File

@ -116,7 +116,8 @@ VMM_STAT_DECLARE(VMEXIT_INTR_WINDOW);
VMM_STAT_DECLARE(VMEXIT_NMI_WINDOW);
VMM_STAT_DECLARE(VMEXIT_INOUT);
VMM_STAT_DECLARE(VMEXIT_CPUID);
VMM_STAT_DECLARE(VMEXIT_EPT_FAULT);
VMM_STAT_DECLARE(VMEXIT_NESTED_FAULT);
VMM_STAT_DECLARE(VMEXIT_INST_EMUL);
VMM_STAT_DECLARE(VMEXIT_UNKNOWN);
VMM_STAT_DECLARE(VMEXIT_ASTPENDING);
VMM_STAT_DECLARE(VMEXIT_USERSPACE);