[PATCH v2 34/35] KVM: arm64: Extend pKVM page ownership selftests to cover forced reclaim

[Will Deacon]

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

Signed-off-by: Will Deacon <will at kernel.org>
---
 arch/arm64/kvm/hyp/nvhe/mem_protect.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kvm/hyp/nvhe/mem_protect.c b/arch/arm64/kvm/hyp/nvhe/mem_protect.c
index f36f81f75fdf..a7d880701933 100644
--- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c
+++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c
@@ -1821,8 +1821,20 @@ 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;
-- 
2.52.0.457.g6b5491de43-goog