linux-kernel - [PATCH 2/3] KVM - Fix hypercall arguments

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Message-ID: <20070716192447.GA16248@c2.user-mode-linux.org>
Date:	Mon, 16 Jul 2007 15:24:47 -0400
From:	Jeff Dike <jdike@...toit.com>
To:	Avi Kivity <avi@...ranet.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	KVM devel <kvm-devel@...ts.sourceforge.net>
Subject: [PATCH 2/3] KVM - Fix hypercall arguments

It looks like kvm_hypercall is trying to match the system call
convention and mixed up the call number and first argument in the
32-bit case.

Signed-off-by: Jeff Dike <jdike@...ux.intel.com>
--
 drivers/kvm/kvm_main.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Index: kvm/drivers/kvm/kvm_main.c
===================================================================
--- kvm.orig/drivers/kvm/kvm_main.c
+++ kvm/drivers/kvm/kvm_main.c
@@ -1351,8 +1351,8 @@ int kvm_hypercall(struct kvm_vcpu *vcpu,
 	} else
 #endif
 	{
-		nr = vcpu->regs[VCPU_REGS_RBX] & -1u;
-		a0 = vcpu->regs[VCPU_REGS_RAX] & -1u;
+		nr = vcpu->regs[VCPU_REGS_RAX] & -1u;
+		a0 = vcpu->regs[VCPU_REGS_RBX] & -1u;
 		a1 = vcpu->regs[VCPU_REGS_RCX] & -1u;
 		a2 = vcpu->regs[VCPU_REGS_RDX] & -1u;
 		a3 = vcpu->regs[VCPU_REGS_RSI] & -1u;
-
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