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Bug#573071: Any idea when the fix is going to available?

On Thu, 2010-04-22 at 19:18 -0500, Kevin Burge wrote:
> It's been almost two months now since I've been able to boot my Linux 
> vms.  I'm really surprised by this - usually with Debian problems are 
> fixed within a couple hours to at most a few days.

Sorry about this.  We now have a candidate fix for this, which should be
released soon.  Perhaps you would like to test it?  Instructions for
rebuilding an official kernel package with extra patches are at


Date: Fri, 19 Mar 2010 15:47:39 +0100
Subject: KVM: x86: disable paravirt mmu reporting
From: Marcelo Tosatti <mtosatti@redhat.com>

commit a68a6a7282373bedba8a2ed751b6384edb983a64 upstream

Disable paravirt MMU capability reporting, so that new (or rebooted)
guests switch to native operation.

Paravirt MMU is a burden to maintain and does not bring significant
advantages compared to shadow anymore.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
[bwh: Adjust context for 2.6.26]
 arch/x86/kvm/x86.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1242,8 +1242,8 @@ int kvm_dev_ioctl_check_extension(long e
-	case KVM_CAP_PV_MMU:
-		r = !tdp_enabled;
+	case KVM_CAP_PV_MMU:	/* obsolete */
+		r = 0;
 		r = 0;
--- END ---

Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.

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