Commit f4a5a677 authored by Will Deacon's avatar Will Deacon Committed by Marc Zyngier
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KVM: arm64: Extend pKVM page ownership selftests to cover forced reclaim 



Extend the pKVM page ownership selftests to forcefully reclaim a donated
page and check that it cannot be re-donated at the same IPA.

Tested-by: default avatarFuad Tabba <tabba@google.com>
Tested-by: default avatarMostafa Saleh <smostafa@google.com>
Signed-off-by: default avatarWill Deacon <will@kernel.org>
Link: https://patch.msgid.link/20260330144841.26181-36-will@kernel.org


Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
parent 8972a991

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

+14 −2
Original line number Diff line number Diff line
@@ -1815,8 +1815,20 @@ void pkvm_ownership_selftest(void *base) 
	assert_transition_res(-EPERM,	__pkvm_hyp_donate_host, pfn, 1);



	selftest_state.host = PKVM_PAGE_OWNED;

	selftest_state.guest[0] = PKVM_NOPAGE;

	assert_transition_res(0,	__pkvm_host_reclaim_page_guest, gfn, vm);

	selftest_state.guest[0] = PKVM_POISON;

	assert_transition_res(0,	__pkvm_host_force_reclaim_page_guest, phys);

	assert_transition_res(-EPERM,	__pkvm_host_donate_guest, pfn, gfn, vcpu);

	assert_transition_res(-EPERM,	__pkvm_host_share_guest, pfn, gfn, 1, vcpu, prot);



	selftest_state.host = PKVM_NOPAGE;

	selftest_state.guest[1] = PKVM_PAGE_OWNED;

	assert_transition_res(0,	__pkvm_host_donate_guest, pfn, gfn + 1, vcpu);



	selftest_state.host = PKVM_PAGE_OWNED;

	selftest_state.guest[1] = PKVM_NOPAGE;

	assert_transition_res(0,	__pkvm_host_reclaim_page_guest, gfn + 1, vm);

	assert_transition_res(-EPERM,	__pkvm_host_donate_guest, pfn, gfn, vcpu);

	assert_transition_res(-EPERM,	__pkvm_host_share_guest, pfn, gfn, 1, vcpu, prot);



	selftest_state.host = PKVM_NOPAGE;

	selftest_state.hyp = PKVM_PAGE_OWNED;