linux-kernel - [tip:x86/fpu] x86/fpu, kvm: Remove KVM vcpu->fpu

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Message-ID: <tip-3d42de25d290fdfe604835d1b389845b8cba5bff@git.kernel.org>
Date:   Fri, 7 Oct 2016 02:45:51 -0700
From:   tip-bot for Rik van Riel <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mingo@...nel.org, brgerst@...il.com, quentin.casasnovas@...cle.com,
        riel@...hat.com, dvlasenk@...hat.com,
        torvalds@...ux-foundation.org, jpoimboe@...hat.com, bp@...en8.de,
        oleg@...hat.com, hpa@...or.com, peterz@...radead.org,
        dave.hansen@...ux.intel.com, tglx@...utronix.de, luto@...nel.org,
        fenghua.yu@...el.com, linux-kernel@...r.kernel.org
Subject: [tip:x86/fpu] x86/fpu, kvm: Remove KVM vcpu->fpu_counter

Commit-ID:  3d42de25d290fdfe604835d1b389845b8cba5bff
Gitweb:     http://git.kernel.org/tip/3d42de25d290fdfe604835d1b389845b8cba5bff
Author:     Rik van Riel <riel@...hat.com>
AuthorDate: Tue, 4 Oct 2016 20:34:35 -0400
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 7 Oct 2016 11:14:41 +0200

x86/fpu, kvm: Remove KVM vcpu->fpu_counter

With the removal of the lazy FPU code, this field is no longer used.
Get rid of it.

Signed-off-by: Rik van Riel <riel@...hat.com>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Brian Gerst <brgerst@...il.com>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: Denys Vlasenko <dvlasenk@...hat.com>
Cc: Fenghua Yu <fenghua.yu@...el.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Oleg Nesterov <oleg@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Quentin Casasnovas <quentin.casasnovas@...cle.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: pbonzini@...hat.com
Link: http://lkml.kernel.org/r/1475627678-20788-7-git-send-email-riel@redhat.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/kvm/x86.c       | 4 +---
 include/linux/kvm_host.h | 1 -
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 59d7761..2c7e775 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7348,10 +7348,8 @@ void kvm_load_guest_fpu(struct kvm_vcpu *vcpu)
 
 void kvm_put_guest_fpu(struct kvm_vcpu *vcpu)
 {
-	if (!vcpu->guest_fpu_loaded) {
-		vcpu->fpu_counter = 0;
+	if (!vcpu->guest_fpu_loaded)
 		return;
-	}
 
 	vcpu->guest_fpu_loaded = 0;
 	copy_fpregs_to_fpstate(&vcpu->arch.guest_fpu);
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 9c28b4d..4e6905c 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -224,7 +224,6 @@ struct kvm_vcpu {
 
 	int fpu_active;
 	int guest_fpu_loaded, guest_xcr0_loaded;
-	unsigned char fpu_counter;
 	struct swait_queue_head wq;
 	struct pid *pid;
 	int sigset_active;