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KVM: arm64: Condition HW AF updates on config option
[ Upstream commit 1dfc3e9 ] 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: 6df696c ("arm64: errata: Mitigate Ampere1 erratum AC03_CPU_38 at stage-2") Signed-off-by: Sasha Levin <sashal@kernel.org>
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