[COMMIT master] KVM: VMX: Correct asm constraint in vmcs_load()/vmcs_clear()

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From: Avi Kivity <avi@xxxxxxxxxx>

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

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

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index a713c69..67c0852 100644
--- 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",
--
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