Messages in this thread | | | Subject | Re: [PATCH v3 0/2] KVM: x86/mmu: Skip mmu_notifier changes when possible | From | Paolo Bonzini <> | Date | Thu, 28 Jan 2021 13:48:26 +0100 |
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On 28/01/21 07:05, David Stevens wrote: > 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. > > 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 | 16 ++++++++------ > arch/x86/kvm/mmu/paging_tmpl.h | 7 ++++--- > include/linux/kvm_host.h | 25 +++++++++++++++++++++- > virt/kvm/kvm_main.c | 29 ++++++++++++++++++++++---- > 6 files changed, 65 insertions(+), 16 deletions(-) >
Queued, thanks.
Paolo
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