linux-kernel - Re: [patch 05/21] x86/KVM: Convert to fpstate

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Date:   Wed, 13 Oct 2021 17:11:27 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, "Chang S. Bae" <chang.seok.bae@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        kvm@...r.kernel.org
Subject: Re: [patch 05/21] x86/KVM: Convert to fpstate

On 13/10/21 16:55, Thomas Gleixner wrote:
> Convert KVM code to the new register storage mechanism in preparation for
> dynamically sized buffers.
> 
> No functional change.
> 
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> Cc: Paolo Bonzini <pbonzini@...hat.com>
> Cc: kvm@...r.kernel.org
> ---
>   arch/x86/kvm/x86.c |    4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -10389,7 +10389,7 @@ int kvm_arch_vcpu_ioctl_get_fpu(struct k
>   
>   	vcpu_load(vcpu);
>   
> -	fxsave = &vcpu->arch.guest_fpu->state.fxsave;
> +	fxsave = &vcpu->arch.guest_fpu->fpstate->regs.fxsave;
>   	memcpy(fpu->fpr, fxsave->st_space, 128);
>   	fpu->fcw = fxsave->cwd;
>   	fpu->fsw = fxsave->swd;
> @@ -10412,7 +10412,7 @@ int kvm_arch_vcpu_ioctl_set_fpu(struct k
>   
>   	vcpu_load(vcpu);
>   
> -	fxsave = &vcpu->arch.guest_fpu->state.fxsave;
> +	fxsave = &vcpu->arch.guest_fpu->fpstate->regs.fxsave;
>   
>   	memcpy(fxsave->st_space, fpu->fpr, 128);
>   	fxsave->cwd = fpu->fcw;
> 

Acked-by: Paolo Bonzini <pbonzini@...hat.com>