kvm: x86/mmu: Add access tracking for tdp_mmu

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In order to interoperate correctly with the rest of KVM and other Linux
subsystems, the TDP MMU must correctly handle various MMU notifiers. The
main Linux MM uses the access tracking MMU notifiers for swap and other
features. Add hooks to handle the test/flush HVA (range) family of
MMU notifiers.

Tested by running kvm-unit-tests and KVM selftests on an Intel Haswell
machine. This series introduced no new failures.

This series can be viewed in Gerrit at:
	https://linux-review.googlesource.com/c/virt/kvm/kvm/+/2538

Signed-off-by: Ben Gardon <bgardon@google.com>
Message-Id: <20201014182700.2888246-14-bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

...

This commit is contained in:

Ben Gardon 2020-10-14 11:26:53 -07:00 • committed by Paolo Bonzini

parent 063afacd87

commit f8e144971c

3 changed files with 128 additions and 7 deletions

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16

arch/x86/kvm/mmu/mmu.c

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115

arch/x86/kvm/mmu/tdp_mmu.c

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4

arch/x86/kvm/mmu/tdp_mmu.h

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