linux-kernel - [PATCH 5/5] KVM: selftests: Test private access to deleted memslot with quirk disabled

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Date: Thu, 13 Jun 2024 14:11:05 +0800
From: Yan Zhao <yan.y.zhao@...el.com>
To: pbonzini@...hat.com,
	seanjc@...gle.com
Cc: rick.p.edgecombe@...el.com,
	kai.huang@...el.com,
	isaku.yamahata@...el.com,
	dmatlack@...gle.com,
	sagis@...gle.com,
	erdemaktas@...gle.com,
	linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org,
	Yan Zhao <yan.y.zhao@...el.com>
Subject: [PATCH 5/5] KVM: selftests: Test private access to deleted memslot with quirk disabled

Update private_mem_kvm_exits_test to make sure private access to deleted
memslot functional both when quirk KVM_X86_QUIRK_SLOT_ZAP_ALL is enabled
and disabled.

Signed-off-by: Yan Zhao <yan.y.zhao@...el.com>
---
 .../selftests/kvm/x86_64/private_mem_kvm_exits_test.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/kvm/x86_64/private_mem_kvm_exits_test.c b/tools/testing/selftests/kvm/x86_64/private_mem_kvm_exits_test.c
index 13e72fcec8dd..a4d304fce294 100644
--- a/tools/testing/selftests/kvm/x86_64/private_mem_kvm_exits_test.c
+++ b/tools/testing/selftests/kvm/x86_64/private_mem_kvm_exits_test.c
@@ -44,7 +44,7 @@ const struct vm_shape protected_vm_shape = {
 	.type = KVM_X86_SW_PROTECTED_VM,
 };
 
-static void test_private_access_memslot_deleted(void)
+static void test_private_access_memslot_deleted(bool disable_slot_zap_quirk)
 {
 	struct kvm_vm *vm;
 	struct kvm_vcpu *vcpu;
@@ -55,6 +55,9 @@ static void test_private_access_memslot_deleted(void)
 	vm = vm_create_shape_with_one_vcpu(protected_vm_shape, &vcpu,
 					   guest_repeatedly_read);
 
+	if (disable_slot_zap_quirk)
+		vm_enable_cap(vm, KVM_CAP_DISABLE_QUIRKS2, KVM_X86_QUIRK_SLOT_ZAP_ALL);
+
 	vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS,
 				    EXITS_TEST_GPA, EXITS_TEST_SLOT,
 				    EXITS_TEST_NPAGES,
@@ -115,6 +118,10 @@ int main(int argc, char *argv[])
 {
 	TEST_REQUIRE(kvm_check_cap(KVM_CAP_VM_TYPES) & BIT(KVM_X86_SW_PROTECTED_VM));
 
-	test_private_access_memslot_deleted();
+	test_private_access_memslot_deleted(false);
+
+	if (kvm_check_cap(KVM_CAP_DISABLE_QUIRKS2) & KVM_X86_QUIRK_SLOT_ZAP_ALL)
+		test_private_access_memslot_deleted(true);
+
 	test_private_access_memslot_not_private();
 }
-- 
2.43.2