KVM: x86/mmu: Allow zapping collapsible SPTEs to use MMU read lock

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To reduce the impact of disabling dirty logging, change the TDP MMU
function which zaps collapsible SPTEs to run under the MMU read lock.
This way, page faults on zapped SPTEs can proceed in parallel with
kvm_mmu_zap_collapsible_sptes.

Signed-off-by: Ben Gardon <bgardon@google.com>
Message-Id: <20210401233736.638171-11-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Ben Gardon 2021-04-01 16:37:33 -07:00 • committed by Paolo Bonzini

parent 6103bc0740

commit 2db6f772b5

2 changed files with 23 additions and 8 deletions

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14

arch/x86/kvm/mmu/mmu.c

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17

arch/x86/kvm/mmu/tdp_mmu.c

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