kvm/aarch64/page_fault_test.c

5  * This test tries different combinations of guest accesses (e.g., write,
20 /* Guest virtual addresses that point to the test page and its PTE. */
52 	/* Skip the test if any prepare function returns false */
252 static bool guest_prepare(struct test_desc *test)
258 		prepare_fn = test->guest_prepare[i];
266 static void guest_test_check(struct test_desc *test)
272 		check_fn = test->guest_test_check[i];
278 static void guest_code(struct test_desc *test)
280 	if (!guest_prepare(test))
283 	GUEST_SYNC(test->mem_mark_cmd);
285 	if (test->guest_test)
286 		test->guest_test();
288 	guest_test_check(test);
308 /* Returns true to continue the test, and false if it should be skipped. */
366 	struct test_desc *test = p->test_desc;
373 	if (test->uffd_pt_handler)
377 						    1, test->uffd_pt_handler);
380 	if (test->uffd_data_handler)
384 						      1, test->uffd_data_handler);
387 static void free_uffd(struct test_desc *test, struct uffd_desc *pt_uffd,
390 	if (test->uffd_pt_handler)
392 	if (test->uffd_data_handler)
405 /* Returns false if the test should be skipped. */
466 /* Returns true to continue the test, and false if it should be skipped. */
523  * Note that this function runs on the host before the test VM starts: there's
541 				 struct test_desc *test)
572  * Create a memslot for code and data at pfn=0, and test-data and PT ones
585 	 * This test requires 1 pgd, 2 pud, 4 pmd, and 6 pte pages when using
621 static void setup_default_handlers(struct test_desc *test)
623 	if (!test->mmio_handler)
624 		test->mmio_handler = mmio_no_handler;
626 	if (!test->fail_vcpu_run_handler)
627 		test->fail_vcpu_run_handler = fail_vcpu_run_no_handler;
630 static void check_event_counts(struct test_desc *test)
632 	TEST_ASSERT_EQ(test->expected_events.uffd_faults, events.uffd_faults);
633 	TEST_ASSERT_EQ(test->expected_events.mmio_exits, events.mmio_exits);
634 	TEST_ASSERT_EQ(test->expected_events.fail_vcpu_runs, events.fail_vcpu_runs);
639 	struct test_desc *test = p->test_desc;
641 	pr_debug("Test: %s\n", test->name);
653  * This function either succeeds, skips the test (after setting test->skip), or
657 			  struct test_desc *test)
668 			test->fail_vcpu_run_handler(ret);
675 				test->skip = true;
686 				test->mmio_handler(vm, run);
694 	pr_debug(test->skip ? "Skipped.\n" : "Done.\n");
700 	struct test_desc *test = p->test_desc;
725 	setup_abort_handlers(vm, vcpu, test);
726 	setup_default_handlers(test);
727 	vcpu_args_set(vcpu, 1, test);
729 	vcpu_run_loop(vm, vcpu, test);
732 	free_uffd(test, pt_uffd, data_uffd);
738 	if (!test->skip)
739 		check_event_counts(test);
921 	 * re-populate the page. Moreover, the test also check that no
948 	 * Can't test guest_at with_af as it's IMPDEF whether the AF is set.