Messages in this thread | | | Date | Thu, 9 Dec 2021 01:16:23 +0000 | From | Sean Christopherson <> | Subject | Re: [PATCH 1/12] KVM: X86: Fix when shadow_root_level=5 && guest root_level<4 |
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On Wed, Nov 24, 2021, Lai Jiangshan wrote: > From: Lai Jiangshan <laijs@linux.alibaba.com> > > If the is an L1 with nNPT in 32bit, the shadow walk starts with > pae_root. > > Fixes: a717a780fc4e ("KVM: x86/mmu: Support shadowing NPT when 5-level paging is enabled in host)
Have you actually run with 5-level nNPT? I don't have access to hardware, at least not that I know of :-)
I'm staring at kvm_mmu_sync_roots() and don't see how it can possibly work for 5-level nNPT with a 4-level NPT guest.
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