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KVM: arm64: Don't skip cache maintenance for read-only memslots
authorWill Deacon <will@kernel.org>
Wed, 29 Jul 2020 10:28:20 +0000 (11:28 +0100)
committerMarc Zyngier <maz@kernel.org>
Thu, 30 Jul 2020 15:02:37 +0000 (16:02 +0100)
commitb9841e65416f7f54932220f3bbd2319a75963a48
tree7e9e3662ffc46a7bbfd4a8840df5b15b0a1e74f9tree | snapshot
parentc9960ad1398c9d6c8169e8b4b12923cdaa3be707commit | diff
KVM: arm64: Don't skip cache maintenance for read-only memslots

If a guest performs cache maintenance on a read-only memslot, we should
inform userspace rather than skip the instruction altogether.

Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Quentin Perret <qperret@google.com>
Link: https://lore.kernel.org/r/20200729102821.23392-4-will@kernel.org
arch/arm64/kvm/mmu.c diff | blob | history
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