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From: Jan Kiszka <jan.kiszka@siemens.com>
To: Avi Kivity <avi@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm <kvm@vger.kernel.org>
Subject: KVM: VMX: Add AX to list of registers clobbered by guest switch
Date: Tue, 28 Sep 2010 16:37:42 +0200	[thread overview]
Message-ID: <4CA1FDB6.3060100@siemens.com> (raw)

By chance this caused no harm so far. We overwrite AX during switch
to/from guest context, so we must declare this.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 arch/x86/kvm/vmx.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 1a5ecfd..e315930 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -4013,7 +4013,7 @@ static void vmx_vcpu_run(struct kvm_vcpu *vcpu)
 #endif
 		[cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2))
 	      : "cc", "memory"
-		, R"bx", R"di", R"si"
+		, R"ax", R"bx", R"di", R"si"
 #ifdef CONFIG_X86_64
 		, "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
 #endif
-- 
1.7.1

             reply	other threads:[~2010-09-28 14:38 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-28 14:37 Jan Kiszka [this message]
2010-09-29  8:43 ` KVM: VMX: Add AX to list of registers clobbered by guest switch Avi Kivity

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