linux-kernel - [PATCH 3/5] KVM: Force real-mode cs limit to 64K

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Message-Id: <20061221094804.E1B1F250048@il.qumranet.com>
Date:	Thu, 21 Dec 2006 09:48:04 -0000
From:	Avi Kivity <avi@...ranet.com>
To:	kvm-devel@...ts.sourceforge.net
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org, mingo@...e.hu
Subject: [PATCH 3/5] KVM: Force real-mode cs limit to 64K

From: Michael Riepe <michael@...11.de>

this allows opensolaris to boot on kvm/intel.

Signed-off-by: Michael Riepe <michael@...11.de>
Signed-off-by: Avi Kivity <avi@...ranet.com>

Index: linux-2.6/drivers/kvm/vmx.c
===================================================================
--- linux-2.6.orig/drivers/kvm/vmx.c
+++ linux-2.6/drivers/kvm/vmx.c
@@ -726,6 +726,7 @@ static void enter_rmode(struct kvm_vcpu 
 	vmcs_write32(GUEST_SS_AR_BYTES, 0xf3);
 
 	vmcs_write32(GUEST_CS_AR_BYTES, 0xf3);
+	vmcs_write32(GUEST_CS_LIMIT, 0xffff);
 	vmcs_write16(GUEST_CS_SELECTOR, vmcs_readl(GUEST_CS_BASE) >> 4);
 
 	fix_rmode_seg(VCPU_SREG_ES, &vcpu->rmode.es);
-
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