KVM: arm64: Hoist MTE validation check out of MMU lock path

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Simplify the non-cacheable attributes assignment by using a ternary
operator. Additionally, hoist the MTE validation check (mte_allowed) out
of kvm_s2_fault_map() and into kvm_s2_fault_compute_prot(). This allows
us to fail faster and avoid acquiring the KVM MMU lock unnecessarily
when the VMM introduces a disallowed VMA for an MTE-enabled guest.

Signed-off-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>

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Fuad Tabba 2026-03-06 14:02:31 +00:00 • committed by Marc Zyngier

parent 3456943e87

commit 84699747aa

1 changed files with 12 additions and 16 deletions

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arch/arm64/kvm/mmu.c

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