[kvm-unit-tests,v3,2/8] s390x: uv-host: Add uninitialized UV tests

Commit Message

Janosch Frank Oct. 17, 2022, 9:39 a.m. UTC

Let's also test for rc 0x3

Signed-off-by: Janosch Frank <[e-mail]>
Reviewed-by: Nico Boehr <[e-mail]>
Reviewed-by: Steffen Eiden <[e-mail]>
---
 s390x/uv-host.c | 79 +++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 77 insertions(+), 2 deletions(-)

Patch

diff --git a/s390x/uv-host.c b/s390x/uv-host.c
index 622c7f7e..24dcd6dc 100644
--- a/s390x/uv-host.c
+++ b/s390x/uv-host.c
@@ -109,6 +109,25 @@  static void test_priv(void)
 	report_prefix_pop();
 }
 
+static void test_uv_uninitialized(void)
+{
+	struct uv_cb_header uvcb = {};
+	int i;
+
+	report_prefix_push("uninitialized");
+
+	for (i = 0; cmds[i].name; i++) {
+		if (cmds[i].cmd == UVC_CMD_INIT_UV)
+			continue;
+		expect_pgm_int();
+		uvcb.cmd = cmds[i].cmd;
+		uvcb.len = cmds[i].len;
+		uv_call_once(0, (uint64_t)&uvcb);
+		report(uvcb.rc == UVC_RC_INV_STATE, "%s", cmds[i].name);
+	}
+	report_prefix_pop();
+}
+
 static void test_config_destroy(void)
 {
 	int rc;
@@ -476,13 +495,68 @@  static void test_invalid(void)
 	report_prefix_pop();
 }
 
+static void setup_test_clear(void)
+{
+	unsigned long vsize;
+	int rc;
+
+	uvcb_cgc.header.cmd = UVC_CMD_CREATE_SEC_CONF;
+	uvcb_cgc.header.len = sizeof(uvcb_cgc);
+
+	uvcb_cgc.guest_stor_origin = 0;
+	uvcb_cgc.guest_stor_len = 42 * (1UL << 20);
+	vsize = uvcb_qui.conf_base_virt_stor_len +
+		((uvcb_cgc.guest_stor_len / (1UL << 20)) * uvcb_qui.conf_virt_var_stor_len);
+
+	uvcb_cgc.conf_base_stor_origin = (uint64_t)memalign(PAGE_SIZE * 4, uvcb_qui.conf_base_phys_stor_len);
+	uvcb_cgc.conf_var_stor_origin = (uint64_t)memalign(PAGE_SIZE, vsize);
+	uvcb_cgc.guest_asce = (uint64_t)memalign(PAGE_SIZE, 4 * PAGE_SIZE) | ASCE_DT_SEGMENT | REGION_TABLE_LENGTH | ASCE_P;
+	uvcb_cgc.guest_sca = (uint64_t)memalign(PAGE_SIZE * 4, PAGE_SIZE * 4);
+
+	rc = uv_call(0, (uint64_t)&uvcb_cgc);
+	assert(rc == 0);
+
+	uvcb_csc.header.len = sizeof(uvcb_csc);
+	uvcb_csc.header.cmd = UVC_CMD_CREATE_SEC_CPU;
+	uvcb_csc.guest_handle = uvcb_cgc.guest_handle;
+	uvcb_csc.stor_origin = (unsigned long)memalign(PAGE_SIZE, uvcb_qui.cpu_stor_len);
+	uvcb_csc.state_origin = (unsigned long)memalign(PAGE_SIZE, PAGE_SIZE);
+
+	rc = uv_call(0, (uint64_t)&uvcb_csc);
+	assert(rc == 0);
+}
+
 static void test_clear(void)
 {
-	uint64_t *tmp = (void *)uvcb_init.stor_origin;
+	uint64_t *tmp;
+
+	report_prefix_push("load normal reset");
+
+	/*
+	 * Setup a config and a cpu so we can check if a diag308 reset
+	 * clears the donated memory and makes the pages unsecure.
+	 */
+	setup_test_clear();
 
 	diag308_load_reset(1);
 	sclp_console_setup();
-	report(!*tmp, "memory cleared after reset 1");
+
+	tmp = (void *)uvcb_init.stor_origin;
+	report(!*tmp, "uv init donated memory cleared");
+
+	tmp = (void *)uvcb_cgc.conf_base_stor_origin;
+	report(!*tmp, "config base donated memory cleared");
+
+	tmp = (void *)uvcb_cgc.conf_base_stor_origin;
+	report(!*tmp, "config variable donated memory cleared");
+
+	tmp = (void *)uvcb_csc.stor_origin;
+	report(!*tmp, "cpu donated memory cleared after reset 1");
+
+	/* Check if uninitialized after reset */
+	test_uv_uninitialized();
+
+	report_prefix_pop();
 }
 
 static void setup_vmem(void)
@@ -513,6 +587,7 @@  int main(void)
 
 	test_priv();
 	test_invalid();
+	test_uv_uninitialized();
 	test_query();
 	test_init();