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Date: Tue, 16 Mar 2021 19:16:46 +0100 From: Paolo Bonzini <pbonzini@...hat.com> To: Ben Gardon <bgardon@...gle.com>, linux-kernel@...r.kernel.org, kvm@...r.kernel.org Cc: Sean Christopherson <seanjc@...gle.com>, Peter Shier <pshier@...gle.com>, Jim Mattson <jmattson@...gle.com> Subject: Re: [PATCH v3 0/4] Fix RCU warnings in TDP MMU On 16/03/21 00:37, Ben Gardon wrote: > The Linux Test Robot found a few RCU warnings in the TDP MMU: > https://www.spinics.net/lists/kernel/msg3845500.html > https://www.spinics.net/lists/kernel/msg3845521.html > > Fix these warnings and cleanup a hack in tdp_mmu_iter_cond_resched. > > Tested by compiling as suggested in the test robot report and confirmed > that the warnings go away with this series applied. Also ran > kvm-unit-tests on an Intel Skylake machine with the TDP MMU enabled and > confirmed that the series introduced no new failures. > > Ben Gardon (3): > KVM: x86/mmu: Fix RCU usage in handle_removed_tdp_mmu_page > KVM: x86/mmu: Fix RCU usage when atomically zapping SPTEs > KVM: x86/mmu: Factor out tdp_iter_return_to_root > > Sean Christopherson (1): > KVM: x86/mmu: Store the address space ID in the TDP iterator > > arch/x86/kvm/mmu/mmu_internal.h | 5 +++++ > arch/x86/kvm/mmu/tdp_iter.c | 30 +++++++++++++++---------- > arch/x86/kvm/mmu/tdp_iter.h | 4 +++- > arch/x86/kvm/mmu/tdp_mmu.c | 40 +++++++++++++-------------------- > 4 files changed, 41 insertions(+), 38 deletions(-) > Queued, thanks. Paolo
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