diff options
Diffstat (limited to 'kvm/test/x86/svm.c')
| -rw-r--r-- | kvm/test/x86/svm.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/kvm/test/x86/svm.c b/kvm/test/x86/svm.c index dd4a8da44..4a7a66244 100644 --- a/kvm/test/x86/svm.c +++ b/kvm/test/x86/svm.c @@ -209,6 +209,32 @@ static void test_cr3_intercept_bypass(struct test *test) test->scratch = a; } +static bool next_rip_supported(void) +{ + return (cpuid(SVM_CPUID_FUNC).d & 8); +} + +static void prepare_next_rip(struct test *test) +{ + test->vmcb->control.intercept |= (1ULL << INTERCEPT_RDTSC); +} + + +static void test_next_rip(struct test *test) +{ + asm volatile ("rdtsc\n\t" + ".globl exp_next_rip\n\t" + "exp_next_rip:\n\t" ::: "eax", "edx"); +} + +static bool check_next_rip(struct test *test) +{ + extern char exp_next_rip; + unsigned long address = (unsigned long)&exp_next_rip; + + return address == test->vmcb->control.next_rip; +} + static struct test tests[] = { { "null", default_supported, default_prepare, null_test, default_finished, null_check }, @@ -223,6 +249,9 @@ static struct test tests[] = { { "cr3 read intercept emulate", default_supported, prepare_cr3_intercept_bypass, test_cr3_intercept_bypass, default_finished, check_cr3_intercept }, + { "next_rip", next_rip_supported, prepare_next_rip, test_next_rip, + default_finished, check_next_rip }, + }; int main(int ac, char **av) |