Re: [PATCH 4/6 v3] KVM: VMX: Fill in conforming vmx_x86_ops via macro

[Sean Christopherson <sean.j.christopherson@intel.com>]

On Tue, Jul 28, 2020 at 12:10:48AM +0000, Krish Sadhukhan wrote:
> The names of some of the vmx_x86_ops functions do not have a corresponding
> 'vmx_' prefix. Generate the names using a macro so that the names are
> conformant. Fixing the naming will help in better readability and
> maintenance of the code.
> 
> Suggested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
> Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
> Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
> ---
>  arch/x86/kvm/vmx/nested.c |   2 +-
>  arch/x86/kvm/vmx/vmx.c    | 234 +++++++++++++++++++++++-----------------------
>  arch/x86/kvm/vmx/vmx.h    |   2 +-
>  3 files changed, 120 insertions(+), 118 deletions(-)
> 
> diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
> index d1af20b..a898b53 100644
> --- a/arch/x86/kvm/vmx/nested.c
> +++ b/arch/x86/kvm/vmx/nested.c
> @@ -3016,7 +3016,7 @@ static int nested_vmx_check_vmentry_hw(struct kvm_vcpu *vcpu)
>  
>  	preempt_disable();
>  
> -	vmx_prepare_switch_to_guest(vcpu);
> +	vmx_prepare_guest_switch(vcpu);

I very strongly prefer the VMX version, i.e. rename kvm_x86_ops.prepare_guest_switch()
instead of renamed vmx_prepare_switch_to_guest().  prepare_guest_switch() can be
misinterpreted as switching to a different guest, and vmx_prepare_switch_to_guest()
explicitly pairs with vmx_prepare_switch_to_host().

>  
>  	/*
>  	 * Induce a consistency check VMExit by clearing bit 1 in GUEST_RFLAGS,