On Mon, May 1, 2023 at 8:17 PM Sean Christopherson <seanjc@xxxxxxxxxx> wrote: > > Please pull the previously discussed persistent TDP MMU roots change. This > specific commit has been in linux-next since April 26th, and the core > functionality of the patch has been in linux-next since April 21st (the > only tweak from v2=>v3 was to reintroduce a lockdep assertion with a more > robust guard against false positives). Done, thanks. Paolo > The following changes since commit 9ed3bf411226f446a9795f2b49a15b9df98d7cf5: > > KVM: x86/mmu: Move filling of Hyper-V's TLB range struct into Hyper-V code (2023-04-10 15:17:29 -0700) > > are available in the Git repository at: > > https://github.com/kvm-x86/linux.git tags/kvm-x86-mmu-6.4-2 > > for you to fetch changes up to edbdb43fc96b11b3bfa531be306a1993d9fe89ec: > > KVM: x86: Preserve TDP MMU roots until they are explicitly invalidated (2023-04-26 15:50:27 -0700) > > ---------------------------------------------------------------- > Fix a long-standing flaw in x86's TDP MMU where unloading roots on a vCPU can > result in the root being freed even though the root is completely valid and > can be reused as-is (with a TLB flush). > > ---------------------------------------------------------------- > Sean Christopherson (1): > KVM: x86: Preserve TDP MMU roots until they are explicitly invalidated > > arch/x86/kvm/mmu/tdp_mmu.c | 121 +++++++++++++++++++++------------------------ > 1 file changed, 56 insertions(+), 65 deletions(-) >
