KVM: arm64: Add helpers to tag shared pages in SW bits

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We will soon start annotating shared pages in page-tables in nVHE
protected mode. Define all the states in which a page can be (owned,
shared and owned, shared and borrowed), and provide helpers allowing to
convert this into SW bits annotations using the matching prot
attributes.

Reviewed-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210809152448.1810400-13-qperret@google.com

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Quentin Perret 2021-08-09 16:24:39 +01:00 • committed by Marc Zyngier

parent 4505e9b624

commit ec250a67ea

1 changed files with 26 additions and 0 deletions

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arch/arm64/kvm/hyp/include/nvhe/mem_protect.h

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