Re: [RFC PATCH 05/18] KVM: x86: Add pt_guest_exec_control to kvm_vcpu_arch

[Sean Christopherson <seanjc@google.com>]

On Thu, Mar 13, 2025, Jon Kohler wrote:
> Add bool for pt_guest_exec_control to kvm_vcpu_arch, to be used for
> runtime checks for Intel Mode Based Execution Control (MBEC) and
> AMD Guest Mode Execute Control (GMET).
> 
> Signed-off-by: Jon Kohler <jon@nutanix.com>
> 
> ---
>  arch/x86/include/asm/kvm_host.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index fd37dad38670..192233eb557a 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -856,6 +856,8 @@ struct kvm_vcpu_arch {
>  	struct kvm_hypervisor_cpuid kvm_cpuid;
>  	bool is_amd_compatible;
>  
> +	bool pt_guest_exec_control;

Again, aside from the fast that putting this in kvm_vcpu_arch is wrong, this not
worth of a separate patch.