KVM: selftests: arm64: Fix pte encode/decode for PA bits > 48

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The high bits [51:48] of a physical address should appear at [15:12] in
a 64K pte, not at [51:48] as was previously being programmed. Fix this
with new helper functions that do the conversion correctly. This also
sets us up nicely for adding LPA2 encodings in future.

Fixes: 7a6629ef74 ("kvm: selftests: add virt mem support for aarch64")
Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230308110948.1820163-3-ryan.roberts@arm.com

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Ryan Roberts 2023-03-08 11:09:47 +00:00 • committed by Marc Zyngier

parent a2bed39057

commit e659babfc5

1 changed files with 24 additions and 8 deletions

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tools/testing/selftests/kvm/lib/aarch64/processor.c

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