KVM: arm64: Condition HW AF updates on config option

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[ Upstream commit 1dfc3e9050 ]

As it currently stands, KVM makes use of FEAT_HAFDBS unconditionally.
Use of the feature in the rest of the kernel is guarded by an associated
Kconfig option.

Align KVM with the rest of the kernel and only enable VTCR_HA when
ARM64_HW_AFDBM is enabled. This can be helpful for testing changes to
the stage-2 access fault path on Armv8.1+ implementations.

Link: https://lore.kernel.org/r/20221202185156.696189-7-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Stable-dep-of: 6df696cd9b ("arm64: errata: Mitigate Ampere1 erratum AC03_CPU_38 at stage-2")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Oliver Upton 2022-12-02 18:51:56 +00:00 • committed by Greg Kroah-Hartman

parent 17e188e0fe

commit eb1de0a234

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arch/arm64/kvm/hyp/pgtable.c

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