releases/5.0.14/kvm-nvmx-remove-a-rogue-rax-clobber-from-nested_vmx_check_vmentry_hw.patch

From 9ce0a07a6f49822238fd4357c02e0dba060a43cc Mon Sep 17 00:00:00 2001
From: Sean Christopherson <sean.j.christopherson@intel.com>
Date: Fri, 25 Jan 2019 07:40:55 -0800
Subject: KVM: nVMX: Remove a rogue "rax" clobber from nested_vmx_check_vmentry_hw()

From: Sean Christopherson <sean.j.christopherson@intel.com>

commit 9ce0a07a6f49822238fd4357c02e0dba060a43cc upstream.

RAX is not touched by nested_vmx_check_vmentry_hw(), directly or
indirectly (e.g. vmx_vmenter()).  Remove it from the clobber list.

Fixes: 52017608da33 ("KVM: nVMX: add option to perform early consistency checks via H/W")
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/kvm/vmx/nested.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -2793,7 +2793,7 @@ static int nested_vmx_check_vmentry_hw(s
 		[fail]"i"(offsetof(struct vcpu_vmx, fail)),
 		[host_rsp]"i"(offsetof(struct vcpu_vmx, host_rsp)),
 		[wordsize]"i"(sizeof(ulong))
-	      : "rax", "cc", "memory"
+	      : "cc", "memory"
 	);
 
 	preempt_enable();