KVM: VMX: read/write MSR_IA32_DEBUGCTLMSR from GUEST_IA32_DEBUGCTL

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SVM already has specific handlers of MSR_IA32_DEBUGCTLMSR in the
svm_get/set_msr, so the x86 common part can be safely moved to VMX.
This allows KVM to store the bits it supports in GUEST_IA32_DEBUGCTL.

Add vmx_supported_debugctl() to refactor the throwing logic of #GP.

Signed-off-by: Like Xu <like.xu@linux.intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Message-Id: <20210108013704.134985-2-like.xu@linux.intel.com>
[Merge parts of Chenyi Qiang's "KVM: X86: Expose bus lock debug exception
 to guest". - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

...

This commit is contained in:

Like Xu 2021-01-08 09:36:55 +08:00 • committed by Paolo Bonzini

parent 563c54c4d5

commit d855066f81

4 changed files with 28 additions and 18 deletions

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5

arch/x86/kvm/vmx/capabilities.h

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arch/x86/kvm/vmx/vmx.c

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arch/x86/kvm/x86.c

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arch/x86/kvm/x86.h

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