[PATCH kvm-unit-tests 2/2] svm: INIT intercept test

From: Cathy Avery
Date: Mon Jun 08 2020 - 08:28:12 EST


INIT vcpu 2 and intercept the INIT. This test
will leave the vcpu in an unusable state.

Signed-off-by: Cathy Avery <cavery@xxxxxxxxxx>
---
x86/svm_tests.c | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)

diff --git a/x86/svm_tests.c b/x86/svm_tests.c
index c1abd55..a4dbe91 100644
--- a/x86/svm_tests.c
+++ b/x86/svm_tests.c
@@ -1789,6 +1789,43 @@ static bool virq_inject_check(struct svm_test *test)
return get_test_stage(test) == 5;
}

+static volatile bool init_intercept;
+
+static void init_signal_intercept_prepare(struct svm_test *test)
+{
+
+ vmcb_ident(vmcb);
+ vmcb->control.intercept |= (1ULL << INTERCEPT_INIT);
+ init_intercept = false;
+}
+
+static void init_signal_test(struct svm_test *test)
+{
+ apic_icr_write(APIC_DEST_SELF | APIC_DEST_PHYSICAL | APIC_DM_INIT | APIC_INT_ASSERT, 0);
+}
+
+static bool init_signal_finished(struct svm_test *test)
+{
+ vmcb->save.rip += 3;
+
+ if (vmcb->control.exit_code != SVM_EXIT_INIT) {
+ report(false, "VMEXIT not due to init intercept. Exit reason 0x%x",
+ vmcb->control.exit_code);
+ return true;
+ }
+
+ init_intercept = true;
+
+ report(true, "INIT to vcpu intercepted");
+
+ return true;
+}
+
+static bool init_signal_check(struct svm_test *test)
+{
+ return init_intercept;
+}
+
#define TEST(name) { #name, .v2 = name }

/*
@@ -1950,6 +1987,9 @@ struct svm_test svm_tests[] = {
{ "virq_inject", default_supported, virq_inject_prepare,
default_prepare_gif_clear, virq_inject_test,
virq_inject_finished, virq_inject_check },
+ { "svm_init_signal_intercept_test", default_supported, init_signal_intercept_prepare,
+ default_prepare_gif_clear, init_signal_test,
+ init_signal_finished, init_signal_check, .on_vcpu = 2 },
TEST(svm_guest_state_test),
{ NULL, NULL, NULL, NULL, NULL, NULL, NULL }
};
--
2.20.1