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    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@redhat.com>
    AuthorDate: Tue, 4 Oct 2016 20:34:35 -0400
    Committer: Ingo Molnar <mingo@kernel.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@redhat.com>
    Cc: Andy Lutomirski <luto@kernel.org>
    Cc: Borislav Petkov <bp@alien8.de>
    Cc: Brian Gerst <brgerst@gmail.com>
    Cc: Dave Hansen <dave.hansen@linux.intel.com>
    Cc: Denys Vlasenko <dvlasenk@redhat.com>
    Cc: Fenghua Yu <fenghua.yu@intel.com>
    Cc: H. Peter Anvin <hpa@zytor.com>
    Cc: Josh Poimboeuf <jpoimboe@redhat.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Oleg Nesterov <oleg@redhat.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: pbonzini@redhat.com
    Link: http://lkml.kernel.org/r/1475627678-20788-7-git-send-email-riel@redhat.com
    Signed-off-by: Ingo Molnar <mingo@kernel.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;
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