KVM: arm64: Add a range to __pkvm_host_unshare_guest()

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In preparation for supporting stage-2 huge mappings for np-guest. Add a
nr_pages argument to the __pkvm_host_unshare_guest hypercall. This range
supports only two values: 1 or PMD_SIZE / PAGE_SIZE (that is 512 on a
4K-pages system).

Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Link: https://lore.kernel.org/r/20250521124834.1070650-5-vdonnefort@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>

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Vincent Donnefort 2025-05-21 13:48:28 +01:00 • committed by Marc Zyngier

parent 4274385ebf

commit f28f1d02f4

4 changed files with 35 additions and 29 deletions

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2

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

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arch/arm64/kvm/hyp/nvhe/hyp-main.c

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arch/arm64/kvm/hyp/nvhe/mem_protect.c

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arch/arm64/kvm/pkvm.c

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