KVM: arm64: Introduce __pkvm_host_donate_guest()

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In preparation for supporting protected VMs, whose memory pages are
isolated from the host, introduce a new pKVM hypercall to allow the
donation of pages to a guest.

Tested-by: Fuad Tabba <tabba@google.com>
Tested-by: Mostafa Saleh <smostafa@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
Link: https://patch.msgid.link/20260330144841.26181-13-will@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>

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Will Deacon 2026-03-30 15:48:13 +01:00 • committed by Marc Zyngier

parent 6c58f914eb

commit 1e579adca1

5 changed files with 55 additions and 1 deletions

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1

arch/arm64/include/asm/kvm_asm.h

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arch/arm64/include/asm/kvm_pgtable.h

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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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