diff mbox series

[kvm-unit-tests,v2,5/8] s390x: uv-host: Add a set secure config parameters test function

Message ID 20220706064024.16573-6-frankja@linux.ibm.com (mailing list archive)
State New, archived
Headers show
Series s390x: uv-host: Access check extensions and improvements | expand

Commit Message

Janosch Frank July 6, 2022, 6:40 a.m. UTC 
Time for more tests.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
---
 s390x/uv-host.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
diff mbox series

Patch

diff --git a/s390x/uv-host.c b/s390x/uv-host.c
index a626a651..0044e8b9 100644
--- a/s390x/uv-host.c
+++ b/s390x/uv-host.c
@@ -248,6 +248,53 @@  static void test_cpu_destroy(void)
 	report_prefix_pop();
 }
 
+static void test_set_se_header(void)
+{
+	struct uv_cb_ssc uvcb = {
+		.header.cmd = UVC_CMD_SET_SEC_CONF_PARAMS,
+		.header.len = sizeof(uvcb),
+		.guest_handle = uvcb_cgc.guest_handle,
+		.sec_header_origin = 0,
+		.sec_header_len = 0x1000,
+	};
+	void *pages =  alloc_pages(1);
+	void *inv;
+	int rc;
+
+	report_prefix_push("sscp");
+
+	uvcb.header.len -= 8;
+	rc = uv_call(0, (uint64_t)&uvcb);
+	report(rc == 1 && uvcb.header.rc == UVC_RC_INV_LEN,
+	       "hdr invalid length");
+	uvcb.header.len += 8;
+
+	uvcb.guest_handle += 1;
+	rc = uv_call(0, (uint64_t)&uvcb);
+	report(rc == 1 && uvcb.header.rc == UVC_RC_INV_GHANDLE, "invalid handle");
+	uvcb.guest_handle -= 1;
+
+	inv = pages + PAGE_SIZE;
+	uvcb.sec_header_origin = (uint64_t)inv;
+	protect_page(inv, PAGE_ENTRY_I);
+	rc = uv_call(0, (uint64_t)&uvcb);
+	report(rc == 1 && uvcb.header.rc == 0x103,
+	       "se hdr access exception");
+
+	/*
+	 * Shift the ptr so the first few DWORDs are accessible but
+	 * the following are on an invalid page.
+	 */
+	uvcb.sec_header_origin -= 0x20;
+	rc = uv_call(0, (uint64_t)&uvcb);
+	report(rc == 1 && uvcb.header.rc == 0x103,
+	       "se hdr access exception crossing");
+	unprotect_page(inv, PAGE_ENTRY_I);
+
+	free_pages(pages);
+	report_prefix_pop();
+}
+
 static void test_cpu_create(void)
 {
 	int rc;
@@ -661,6 +708,7 @@  int main(void)
 
 	test_config_create();
 	test_cpu_create();
+	test_set_se_header();
 	test_cpu_destroy();
 	test_config_destroy();
 	test_clear();