Messages in this thread | | | From | David Stevens <> | Subject | [PATCH v4 0/2] KVM: x86/mmu: Skip mmu_notifier changes when possible | Date | Mon, 22 Feb 2021 11:45:20 +0900 |
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These patches reduce how often mmu_notifier updates block guest page faults. The primary benefit of this is the reduction in the likelihood of extreme latency when handling a page fault due to another thread having been preempted while modifying host virtual addresses.
v3 -> v4: - Fix bug by skipping prefetch during invalidation
v2 -> v3: - Added patch to skip check for MMIO page faults - Style changes
David Stevens (1): KVM: x86/mmu: Consider the hva in mmu_notifier retry
Sean Christopherson (1): KVM: x86/mmu: Skip mmu_notifier check when handling MMIO page fault
arch/powerpc/kvm/book3s_64_mmu_hv.c | 2 +- arch/powerpc/kvm/book3s_64_mmu_radix.c | 2 +- arch/x86/kvm/mmu/mmu.c | 23 ++++++++++++++------ arch/x86/kvm/mmu/paging_tmpl.h | 7 ++++--- include/linux/kvm_host.h | 25 +++++++++++++++++++++- virt/kvm/kvm_main.c | 29 ++++++++++++++++++++++---- 6 files changed, 72 insertions(+), 16 deletions(-)
-- 2.30.0.617.g56c4b15f3c-goog
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