Messages in this thread | | | Date | Mon, 8 Apr 2024 19:01:35 -0700 | Subject | Re: [PATCH] KVM: x86/mmu: Precisely invalidate MMU root_role during CPUID update | From | Sean Christopherson <> |
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On Mon, 08 Apr 2024 16:11:15 -0700, Sean Christopherson wrote: > Set kvm_mmu_page_role.invalid to mark the various MMU root_roles invalid > during CPUID update in order to force a refresh, instead of zeroing out > the entire role. This fixes a bug where kvm_mmu_free_roots() incorrectly > thinks a root is indirect, i.e. not a TDP MMU, due to "direct" being > zeroed, which in turn causes KVM to take mmu_lock for write instead of > read. > > [...]
Applied super quickly to kvm-x86 fixes, so that it gets time in -next before I pass it on to Paolo. This is the last commit in "fixes", so it's easy to drop and/or modify if there's an issue.
[1/1] KVM: x86/mmu: Precisely invalidate MMU root_role during CPUID update https://github.com/kvm-x86/linux/commit/4fa96da3e6fe
-- https://github.com/kvm-x86/linux/tree/next
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