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KVM: arm64: Introduce __pkvm_host_unshare_guest()

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In preparation for letting the host unmap pages from non-protected
guests, introduce a new hypercall implementing the host-unshare-guest
transition.

Tested-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Quentin Perret <qperret@google.com>
Link: https://lore.kernel.org/r/20241218194059.3670226-12-qperret@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Quentin Perret 2024-12-18 19:40:52 +00:00 • committed by Marc Zyngier
commit 72db3d3fba
6 changed files with 108 additions and 0 deletions
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