diff mbox series

[kvm-unit-tests,v2,1/9] s390x: uv-host: Fix UV init test memory allocation

Message ID 20230324121724.1627-2-frankja@linux.ibm.com (mailing list archive)
State New, archived
Headers show
Series s390x: uv-host: Fixups and extensions part 1 | expand

Commit Message

Janosch Frank March 24, 2023, 12:17 p.m. UTC 
The init memory has to be above 2G and 1M aligned but we're currently
aligning on 2G which means the allocations need a lot of unused
memory.

Also the second block of memory was never actually used for the double
init test since its address is never put into the uvcb.

Let's fix that.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
---
 s390x/uv-host.c | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

Comments

Nico Boehr March 24, 2023, 12:39 p.m. UTC | #1 
Quoting Janosch Frank (2023-03-24 13:17:16)
> The init memory has to be above 2G and 1M aligned but we're currently
> aligning on 2G which means the allocations need a lot of unused
> memory.
> 
> Also the second block of memory was never actually used for the double
> init test since its address is never put into the uvcb.
> 
> Let's fix that.
> 
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

Reviewed-by: Nico Boehr <nrb@linux.ibm.com>
diff mbox series

Patch

diff --git a/s390x/uv-host.c b/s390x/uv-host.c
index 33e6eec6..9dfaebd7 100644
--- a/s390x/uv-host.c
+++ b/s390x/uv-host.c
@@ -500,14 +500,17 @@  static void test_config_create(void)
 static void test_init(void)
 {
 	int rc;
-	uint64_t mem;
+	uint64_t tmp;
 
-	/* Donated storage needs to be over 2GB */
-	mem = (uint64_t)memalign_pages_flags(SZ_1M, uvcb_qui.uv_base_stor_len, AREA_NORMAL);
+	/*
+	 * Donated storage needs to be over 2GB, AREA_NORMAL does that
+	 * on s390x.
+	 */
+	tmp = (uint64_t)memalign_pages_flags(SZ_1M, uvcb_qui.uv_base_stor_len, AREA_NORMAL);
 
 	uvcb_init.header.len = sizeof(uvcb_init);
 	uvcb_init.header.cmd = UVC_CMD_INIT_UV;
-	uvcb_init.stor_origin = mem;
+	uvcb_init.stor_origin = tmp;
 	uvcb_init.stor_len = uvcb_qui.uv_base_stor_len;
 
 	report_prefix_push("init");
@@ -528,14 +531,14 @@  static void test_init(void)
 	rc = uv_call(0, (uint64_t)&uvcb_init);
 	report(rc == 1 && (uvcb_init.header.rc == 0x104 || uvcb_init.header.rc == 0x105),
 	       "storage origin invalid");
-	uvcb_init.stor_origin = mem;
+	uvcb_init.stor_origin = tmp;
 
 	if (uvcb_init.stor_len >= HPAGE_SIZE) {
 		uvcb_init.stor_origin = get_max_ram_size() - HPAGE_SIZE;
 		rc = uv_call(0, (uint64_t)&uvcb_init);
 		report(rc == 1 && uvcb_init.header.rc == 0x105,
 		       "storage + length invalid");
-		uvcb_init.stor_origin = mem;
+		uvcb_init.stor_origin = tmp;
 	} else {
 		report_skip("storage + length invalid, stor_len < HPAGE_SIZE");
 	}
@@ -544,7 +547,7 @@  static void test_init(void)
 	rc = uv_call(0, (uint64_t)&uvcb_init);
 	report(rc == 1 && uvcb_init.header.rc == 0x108,
 	       "storage below 2GB");
-	uvcb_init.stor_origin = mem;
+	uvcb_init.stor_origin = tmp;
 
 	smp_cpu_setup(1, PSW_WITH_CUR_MASK(cpu_loop));
 	rc = uv_call(0, (uint64_t)&uvcb_init);
@@ -555,10 +558,12 @@  static void test_init(void)
 	rc = uv_call(0, (uint64_t)&uvcb_init);
 	report(rc == 0 && uvcb_init.header.rc == UVC_RC_EXECUTED, "successful");
 
-	mem = (uint64_t)memalign(1UL << 31, uvcb_qui.uv_base_stor_len);
+	tmp = uvcb_init.stor_origin;
+	uvcb_init.stor_origin =	(uint64_t)memalign_pages_flags(HPAGE_SIZE, uvcb_qui.uv_base_stor_len, AREA_NORMAL);
 	rc = uv_call(0, (uint64_t)&uvcb_init);
 	report(rc == 1 && uvcb_init.header.rc == 0x101, "double init");
-	free((void *)mem);
+	free((void *)uvcb_init.stor_origin);
+	uvcb_init.stor_origin = tmp;
 
 	report_prefix_pop();
 }