From: Ben Gardon <bgardon@google.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Peter Shier <pshier@google.com>,
Jim Mattson <jmattson@google.com>,
Ben Gardon <bgardon@google.com>
Subject: [PATCH v3 0/4] Fix RCU warnings in TDP MMU
Date: Mon, 15 Mar 2021 16:37:59 -0700 [thread overview]
Message-ID: <20210315233803.2706477-1-bgardon@google.com> (raw)
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(-)
--
2.31.0.rc2.261.g7f71774620-goog
next reply other threads:[~2021-03-15 23:38 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-15 23:37 Ben Gardon [this message]
2021-03-15 23:38 ` [PATCH v3 1/4] KVM: x86/mmu: Fix RCU usage in handle_removed_tdp_mmu_page Ben Gardon
2021-03-15 23:38 ` [PATCH v3 2/4] KVM: x86/mmu: Fix RCU usage when atomically zapping SPTEs Ben Gardon
2021-03-16 17:54 ` Sean Christopherson
2021-03-15 23:38 ` [PATCH v3 3/4] KVM: x86/mmu: Factor out tdp_iter_return_to_root Ben Gardon
2021-03-16 17:55 ` Sean Christopherson
2021-03-15 23:38 ` [PATCH v3 4/4] KVM: x86/mmu: Store the address space ID in the TDP iterator Ben Gardon
2021-03-16 18:16 ` [PATCH v3 0/4] Fix RCU warnings in TDP MMU Paolo Bonzini
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