Test that the emulator correctly injects a nested page fault VMEXIT.
Reported-by: Valentine Sinitsyn <valentine.sinit...@gmail.com>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
x86/svm.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/x86/svm.c b/x86/svm.c
index df316b5..85bb1fa 100644
--- a/x86/svm.c
+++ b/x86/svm.c
@@ -855,6 +855,34 @@ static bool npt_l1mmio_check(struct test *test)
return nested_apic_version1 == lvr && nested_apic_version2 == lvr;
}
+static void npt_rw_l1mmio_prepare(struct test *test)
+{
+
+ u64 *pte;
+
+ vmcb_ident(test->vmcb);
+ pte = npt_get_pte(0xfee00080);
+
+ *pte &= ~(1ULL << 1);
+}
+
+static void npt_rw_l1mmio_test(struct test *test)
+{
+ volatile u32 *data = (volatile void*)(0xfee00080);
+
+ *data = *data;
+}
+
+static bool npt_rw_l1mmio_check(struct test *test)
+{
+ u64 *pte = npt_get_pte(0xfee00080);
+
+ *pte |= (1ULL << 1);
+
+ return (test->vmcb->control.exit_code == SVM_EXIT_NPF)
+ && (test->vmcb->control.exit_info_1 == 0x100000007ULL);
+}
+
static void latency_prepare(struct test *test)
{
default_prepare(test);
@@ -1024,6 +1052,8 @@ static struct test tests[] = {
default_finished, npt_rw_pfwalk_check },
{ "npt_l1mmio", npt_supported, npt_l1mmio_prepare, npt_l1mmio_test,
default_finished, npt_l1mmio_check },
+ { "npt_rw_l1mmio", npt_supported, npt_rw_l1mmio_prepare,
npt_rw_l1mmio_test,
+ default_finished, npt_rw_l1mmio_check },
{ "latency_run_exit", default_supported, latency_prepare, latency_test,
latency_finished, latency_check },
{ "latency_svm_insn", default_supported, lat_svm_insn_prepare, null_test,
--
1.8.3.1
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