KVM: arm64: Tolerate re-creating hyp mappings to set software bits

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The current hypervisor stage-1 mapping code doesn't allow changing an
existing valid mapping. Relax this condition by allowing changes that
only target software bits, as that will soon be needed to annotate shared
pages.

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/20210809152448.1810400-10-qperret@google.com

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Quentin Perret 2021-08-09 16:24:36 +01:00 • committed by Marc Zyngier

parent 8a0282c681

commit b53846c5f2

1 changed files with 16 additions and 2 deletions

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arch/arm64/kvm/hyp/pgtable.c

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