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Date: Tue, 07 Nov 2006 16:04:54 -0000 From: Avi Kivity <avi@...ranet.com> To: kvm-devel@...ts.sourceforge.net Cc: akpm@...l.org, linux-kernel@...r.kernel.org Subject: [PATCH] KVM: Fix guest cr4 corruption Upon entry to protected mode, we set cr4 to a value derived from cr0 accidentally. Fix. This could cause a guest to crash (though I never observed it). Signed-off-by: Avi Kivity <avi@...ranet.com> Index: linux-2.6/drivers/kvm/kvm_main.c =================================================================== --- linux-2.6.orig/drivers/kvm/kvm_main.c +++ linux-2.6/drivers/kvm/kvm_main.c @@ -697,7 +697,7 @@ static void enter_pmode(struct kvm_vcpu vmcs_writel(GUEST_RFLAGS, flags); vmcs_writel(GUEST_CR4, (vmcs_readl(GUEST_CR4) & ~CR4_VME_MASK) | - (vmcs_readl(CR0_READ_SHADOW) & CR4_VME_MASK) ); + (vmcs_readl(CR4_READ_SHADOW) & CR4_VME_MASK)); update_exception_bitmap(vcpu); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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