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    Subject[PATCH 4.4 39/41] KVM: VMX: use cmpxchg64
    Date
    4.4-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Paolo Bonzini <pbonzini@redhat.com>

    commit c0a1666bcb2a33e84187a15eabdcd54056be9a97 upstream.

    This fixes a compilation failure on 32-bit systems.

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    arch/x86/kvm/vmx.c | 12 ++++++------
    1 file changed, 6 insertions(+), 6 deletions(-)

    --- a/arch/x86/kvm/vmx.c
    +++ b/arch/x86/kvm/vmx.c
    @@ -2029,8 +2029,8 @@ static void vmx_vcpu_pi_load(struct kvm_

    /* Allow posting non-urgent interrupts */
    new.sn = 0;
    - } while (cmpxchg(&pi_desc->control, old.control,
    - new.control) != old.control);
    + } while (cmpxchg64(&pi_desc->control, old.control,
    + new.control) != old.control);
    }
    /*
    * Switches to specified vcpu, until a matching vcpu_put(), but assumes
    @@ -10705,8 +10705,8 @@ static int vmx_pre_block(struct kvm_vcpu

    /* set 'NV' to 'wakeup vector' */
    new.nv = POSTED_INTR_WAKEUP_VECTOR;
    - } while (cmpxchg(&pi_desc->control, old.control,
    - new.control) != old.control);
    + } while (cmpxchg64(&pi_desc->control, old.control,
    + new.control) != old.control);

    return 0;
    }
    @@ -10737,8 +10737,8 @@ static void vmx_post_block(struct kvm_vc

    /* set 'NV' to 'notification vector' */
    new.nv = POSTED_INTR_VECTOR;
    - } while (cmpxchg(&pi_desc->control, old.control,
    - new.control) != old.control);
    + } while (cmpxchg64(&pi_desc->control, old.control,
    + new.control) != old.control);

    if(vcpu->pre_pcpu != -1) {
    spin_lock_irqsave(

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