From: Joerg Roedel <[email protected]> This patch adds a test to check if NPT faults that occur while walking the guest page table are reported correctly.
Signed-off-by: Joerg Roedel <[email protected]> Signed-off-by: Avi Kivity <[email protected]> diff --git a/x86/svm.c b/x86/svm.c index 3421736..dc3098f 100644 --- a/x86/svm.c +++ b/x86/svm.c @@ -560,6 +560,28 @@ static bool npt_rw_check(struct test *test) && (test->vmcb->control.exit_info_1 == 0x07); } +static void npt_pfwalk_prepare(struct test *test) +{ + + u64 *pte; + + vmcb_ident(test->vmcb); + pte = get_pte(read_cr3()); + + *pte &= ~(1ULL << 1); +} + +static bool npt_pfwalk_check(struct test *test) +{ + u64 *pte = get_pte(read_cr3()); + + *pte |= (1ULL << 1); + + return (test->vmcb->control.exit_code == SVM_EXIT_NPF) + && (test->vmcb->control.exit_info_1 == 0x7) + && (test->vmcb->control.exit_info_2 == read_cr3()); +} + static struct test tests[] = { { "null", default_supported, default_prepare, null_test, default_finished, null_check }, @@ -590,6 +612,8 @@ static struct test tests[] = { default_finished, npt_rsvd_check }, { "npt_rw", npt_supported, npt_rw_prepare, npt_rw_test, default_finished, npt_rw_check }, + { "npt_pfwalk", npt_supported, npt_pfwalk_prepare, null_test, + default_finished, npt_pfwalk_check }, }; int main(int ac, char **av) -- To unsubscribe from this list: send the line "unsubscribe kvm-commits" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
