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Ignore writes to microcode update MSR. This MSR is accessed by RHEL7 guest.
Add KTR tracepoints to annotate wrmsr and rdmsr VM exits.
This commit is contained in:
parent
91e198f6a2
commit
2cb97c9dd6
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=265114
@ -1797,6 +1797,7 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_exit *vmexit)
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vmm_stat_incr(vmx->vm, vcpu, VMEXIT_RDMSR, 1);
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retu = false;
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ecx = vmxctx->guest_rcx;
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VCPU_CTR1(vmx->vm, vcpu, "rdmsr 0x%08x", ecx);
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error = emulate_rdmsr(vmx->vm, vcpu, ecx, &retu);
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if (error) {
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vmexit->exitcode = VM_EXITCODE_RDMSR;
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@ -1815,6 +1816,8 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_exit *vmexit)
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eax = vmxctx->guest_rax;
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ecx = vmxctx->guest_rcx;
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edx = vmxctx->guest_rdx;
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VCPU_CTR2(vmx->vm, vcpu, "wrmsr 0x%08x value 0x%016lx",
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ecx, (uint64_t)edx << 32 | eax);
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error = emulate_wrmsr(vmx->vm, vcpu, ecx,
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(uint64_t)edx << 32 | eax, &retu);
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if (error) {
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@ -47,6 +47,8 @@ emulate_wrmsr(struct vmctx *ctx, int vcpu, uint32_t code, uint64_t val)
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case 0xd04: /* Sandy Bridge uncore PMC MSRs */
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case 0xc24:
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return (0);
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case 0x79:
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return (0); /* IA32_BIOS_UPDT_TRIG MSR */
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default:
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break;
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}
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