[05/21] x86/KVM: Convert to fpstate

Message ID	20211013145322.451439983@linutronix.de (mailing list archive)
State	New, archived
Headers	show Return-Path: <kvm-owner@kernel.org> Message-ID: <20211013145322.451439983@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de> To: LKML <linux-kernel@vger.kernel.org> Cc: x86@kernel.org, "Chang S. Bae" <chang.seok.bae@intel.com>, Dave Hansen <dave.hansen@linux.intel.com>, Arjan van de Ven <arjan@linux.intel.com>, kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com> Subject: [patch 05/21] x86/KVM: Convert to fpstate References: <20211013142847.120153383@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Date: Wed, 13 Oct 2021 16:55:33 +0200 (CEST) Precedence: bulk
Series	x86/fpu: Move register state into a container struct (part 2) \| expand [00/21] x86/fpu: Move register state into a container struct (part 2) [01/21] x86/fpu: Provide struct fpstate [02/21] x86/fpu: Convert fpstate_init() to struct fpstate [03/21] x86/fpu: Convert restore_fpregs_from_fpstate() to struct fpstate [04/21] x86/fpu: Replace KVMs xstate component clearing [05/21] x86/KVM: Convert to fpstate [06/21] x86/fpu: Convert tracing to fpstate [07/21] x86/fpu/regset: Convert to fpstate [08/21] x86/fpu/signal: Convert to fpstate [09/21] x86/fpu/core: Convert to fpstate [10/21] x86/math-emu: Convert to fpstate [11/21] x86/fpu: Remove fpu::state [12/21] x86/fpu: Do not leak fpstate pointer on fork [13/21] x86/process: Move arch_thread_struct_whitelist() out of line [14/21] x86/fpu: Add size and mask information to fpstate [15/21] x86/fpu: Use fpstate::size [16/21] x86/fpu/xstate: Use fpstate for os_xsave() [17/21] x86/fpu/xstate: Use fpstate for xsave_to_user_sigframe() [18/21] x86/fpu: Use fpstate in fpu_copy_kvm_uabi_to_fpstate() [19/21] x86/fpu: Use fpstate in __copy_xstate_to_uabi_buf() [20/21] x86/fpu/xstate: Use fpstate for copy_uabi_to_xstate() [21/21] x86/fpu/signal: Use fpstate for size and features

Message ID

20211013145322.451439983@linutronix.de (mailing list archive)

State

New, archived

Headers

Message-ID: <20211013145322.451439983@linutronix.de>
From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, "Chang S. Bae" <chang.seok.bae@intel.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Arjan van de Ven <arjan@linux.intel.com>,
        kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>
Subject: [patch 05/21] x86/KVM: Convert to fpstate
References: <20211013142847.120153383@linutronix.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Date: Wed, 13 Oct 2021 16:55:33 +0200 (CEST)
Precedence: bulk

Series

x86/fpu: Move register state into a container struct (part 2) | expand

Commit Message

Thomas Gleixner Oct. 13, 2021, 2:55 p.m. UTC

Convert KVM code to the new register storage mechanism in preparation for
dynamically sized buffers.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org
---
 arch/x86/kvm/x86.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Paolo Bonzini Oct. 13, 2021, 3:11 p.m. UTC | #1

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@linutronix.de>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: kvm@vger.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@redhat.com>

--- 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;

[05/21] x86/KVM: Convert to fpstate

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