KVM: VMX: Correct asm constraint in vmcs_load()/vmcs_clear()

'error' is byte sized, so use a byte register constraint.

Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index a713c69..67c0852 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -477,7 +477,7 @@ static void vmcs_clear(struct vmcs *vmcs)
        u8 error;
 
        asm volatile (__ex(ASM_VMX_VMCLEAR_RAX) "; setna %0"
-                     : "=g"(error) : "a"(&phys_addr), "m"(phys_addr)
+                     : "=qm"(error) : "a"(&phys_addr), "m"(phys_addr)
                      : "cc", "memory");
        if (error)
                printk(KERN_ERR "kvm: vmclear fail: %p/%llx\n",
@@ -490,7 +490,7 @@ static void vmcs_load(struct vmcs *vmcs)
        u8 error;
 
        asm volatile (__ex(ASM_VMX_VMPTRLD_RAX) "; setna %0"
-                       : "=g"(error) : "a"(&phys_addr), "m"(phys_addr)
+                       : "=qm"(error) : "a"(&phys_addr), "m"(phys_addr)
                        : "cc", "memory");
        if (error)
                printk(KERN_ERR "kvm: vmptrld %p/%llx fail\n",