KVM: arm64: Split S1 permission evaluation into direct and hierarchical parts

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The AArch64.S1DirectBasePermissions() pseudocode deals with both
direct and hierarchical S1 permission evaluation. While this is
probably convenient in the pseudocode, we would like a bit more
flexibility to slot things like indirect permissions.

To that effect, split the two permission check parts out of
handle_at_slow() and into their own functions. The permissions
are passed around as part of the walk_result structure.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20241023145345.1613824-20-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

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Marc Zyngier 2024-10-23 15:53:27 +01:00 • committed by Oliver Upton

parent 23e7a34c83

commit 4967b87a9f

1 changed files with 98 additions and 64 deletions

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arch/arm64/kvm/at.c

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