KVM: x86/mmu: Make walk_shadow_page_lockless_{begin,end} interoperate with the TDP MMU

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Acquire the RCU read lock in walk_shadow_page_lockless_begin and release
it in walk_shadow_page_lockless_end when the TDP MMU is enabled.  This
should not introduce any functional changes but is used in the following
commit to make fast_page_fault interoperate with the TDP MMU.

Signed-off-by: David Matlack <dmatlack@google.com>
Message-Id: <20210713220957.3493520-4-dmatlack@google.com>
[Use if...else instead of if(){return;}]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

...

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David Matlack 2021-07-13 22:09:54 +00:00 • committed by Paolo Bonzini

parent 61bcd360aa

commit c5c8c7c530

3 changed files with 43 additions and 25 deletions

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52

arch/x86/kvm/mmu/mmu.c

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6

arch/x86/kvm/mmu/tdp_mmu.c

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10

arch/x86/kvm/mmu/tdp_mmu.h

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