KVM: arm64: Hook up reclaim hypercall to pkvm_pgtable_stage2_destroy()

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During teardown of a protected guest, its memory pages must be reclaimed
from the hypervisor by issuing the '__pkvm_reclaim_dying_guest_page'
hypercall.

Add a new helper, __pkvm_pgtable_stage2_reclaim(), which is called
during the VM teardown operation to reclaim pages from the hypervisor
and drop the GUP pin on the host.

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/20260330144841.26181-17-will@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>

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Will Deacon 2026-03-30 15:48:17 +01:00 • committed by Marc Zyngier

parent 0bf5f4d400

commit 4e6e03f9ea

1 changed files with 30 additions and 1 deletions

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arch/arm64/kvm/pkvm.c

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