KVM: arm64: vgic-its: Add error handling in vgic_its_cache_translation

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The return value of xa_store() needs to be checked. This fix adds an
error handling path that resolves the kref inconsistency on failure. As
suggested by Oliver Upton, this function does not return the error code
intentionally because the translation cache is best effort.

Fixes: 8201d1028c ("KVM: arm64: vgic-its: Maintain a translation cache per ITS")
Signed-off-by: Keisuke Nishimura <keisuke.nishimura@inria.fr>
Suggested-by: Oliver Upton <oliver.upton@linux.dev>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20241130144952.23729-1-keisuke.nishimura@inria.fr
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

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Keisuke Nishimura 2024-11-30 15:49:53 +01:00 • committed by Oliver Upton

parent 03c7527e97

commit be7e611274

1 changed files with 11 additions and 1 deletions

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arch/arm64/kvm/vgic/vgic-its.c

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