KVM: arm64: Use read/write spin lock for MMU protection

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Replace MMU spinlock with rwlock and update all instances of the lock
being acquired with a write lock acquisition.
Future commit will add a fast path for permission relaxation during
dirty logging under a read lock.

Signed-off-by: Jing Zhang <jingzhangos@google.com>
Tested-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220118015703.3630552-2-jingzhangos@google.com

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Jing Zhang 2022-01-18 01:57:01 +00:00 • committed by Marc Zyngier

parent dfd42facf1

commit fcc5bf8963

2 changed files with 20 additions and 18 deletions

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arch/arm64/include/asm/kvm_host.h

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36

arch/arm64/kvm/mmu.c

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