KVM: VMX: use cmpxchg64

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>

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 67f27cc1d1b6ce80d0e1d4d55b4c77019e30d7f3..a018dff00808683731f33c032fd4482481ae238f 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2029,8 +2029,8 @@ static void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu)
 
                /* 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 *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_vcpu *vcpu)
 
                /* 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(