Re: [PATCH] KVM: nVMX: fix comments of handle_vmon()

[Paolo Bonzini]

On 08/09/21 19:17, Yu Zhang wrote:
> "VMXON pointer" is saved in vmx->nested.vmxon_ptr since
> commit 3573e22cfeca ("KVM: nVMX: additional checks on
> vmxon region"). Also, handle_vmptrld() & handle_vmclear()
> now have logic to check the VMCS pointer against the VMXON
> pointer.
>
> So just remove the obsolete comments of handle_vmon().
>
> Signed-off-by: Yu Zhang <yu.c.zhang@xxxxxxxxxxxxxxx>
> ---
>   arch/x86/kvm/vmx/nested.c | 9 +--------
>   1 file changed, 1 insertion(+), 8 deletions(-)
>
> diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
> index bc6327950657..90f34f12f883 100644
> --- a/arch/x86/kvm/vmx/nested.c
> +++ b/arch/x86/kvm/vmx/nested.c
> @@ -4862,14 +4862,7 @@ static int enter_vmx_operation(struct kvm_vcpu *vcpu)
>   	return -ENOMEM;
>   }
>   
> -/*
> - * Emulate the VMXON instruction.
> - * Currently, we just remember that VMX is active, and do not save or even
> - * inspect the argument to VMXON (the so-called "VMXON pointer") because we
> - * do not currently need to store anything in that guest-allocated memory
> - * region. Consequently, VMCLEAR and VMPTRLD also do not verify that the their
> - * argument is different from the VMXON pointer (which the spec says they do).
> - */
> +/* Emulate the VMXON instruction. */
>   static int handle_vmon(struct kvm_vcpu *vcpu)
>   {
>   	int ret;

Queued, thanks.

Paolo