KVM: x86/mmu: Coalesce TLB flushes when zapping collapsible SPTEs

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Gather pending TLB flushes across both the legacy and TDP MMUs when
zapping collapsible SPTEs to avoid multiple flushes if both the legacy
MMU (for nested guests) and TDP MMU have mappings for the memslot.

Note, this also optimizes the TDP MMU to flush only the relevant range
when running as L1 with Hyper-V enlightenments.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210326021957.1424875-4-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2021-03-25 19:19:42 -07:00 • committed by Paolo Bonzini

parent 302695a574

commit 142ccde1f7

3 changed files with 9 additions and 9 deletions

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6

arch/x86/kvm/mmu/mmu.c

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arch/x86/kvm/mmu/tdp_mmu.c

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4

arch/x86/kvm/mmu/tdp_mmu.h

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