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KVM: arm64: Extend pKVM page ownership selftests to cover forced reclaim

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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: 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/20260330144841.26181-36-will@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Will Deacon 2026-03-30 15:48:36 +01:00 committed by Marc Zyngier
parent 8972a99160
commit f4a5a6770a
1 changed files with 14 additions and 2 deletions
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16
arch/arm64/kvm/hyp/nvhe/mem_protect.c
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@ -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;