From: Marcelo Tosatti <mtosatti@redhat.com>
To: kvm <kvm@vger.kernel.org>
Cc: Avi Kivity <avi@redhat.com>
Subject: KVM: x86: disable paravirt mmu reporting
Date: Thu, 1 Oct 2009 19:28:39 -0300 [thread overview]
Message-ID: <20091001222839.GA23229@amt.cnet> (raw)
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>
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index ffccb5c..fe467cb 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1238,8 +1238,8 @@ int kvm_dev_ioctl_check_extension(long ext)
case KVM_CAP_NR_MEMSLOTS:
r = KVM_MEMORY_SLOTS;
break;
- case KVM_CAP_PV_MMU:
- r = !tdp_enabled;
+ case KVM_CAP_PV_MMU: /* obsolete */
+ r = 0;
break;
case KVM_CAP_IOMMU:
r = iommu_found();
reply other threads:[~2009-10-01 22:29 UTC|newest]
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