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[kvm-unit-tests,v4,4/8] s390x: uv-host: Add cpu number check to test_init

Message ID 20230622075054.3190-5-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 June 22, 2023, 7:50 a.m. UTC 
We should only run a test that needs more than one cpu if a sufficient
number of cpus are available.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Nico Boehr <nrb@linux.ibm.com>
---
 s390x/uv-host.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)
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Patch

diff --git a/s390x/uv-host.c b/s390x/uv-host.c
index 08ef266a..c04cdd73 100644
--- a/s390x/uv-host.c
+++ b/s390x/uv-host.c
@@ -550,11 +550,15 @@  static void test_init(void)
 	       "storage below 2GB");
 	uvcb_init.stor_origin = tmp;
 
-	smp_cpu_setup(1, PSW_WITH_CUR_MASK(cpu_loop));
-	rc = uv_call(0, (uint64_t)&uvcb_init);
-	report(rc == 1 && uvcb_init.header.rc == 0x102,
-	       "too many running cpus");
-	smp_cpu_stop(1);
+	if (smp_query_num_cpus() > 1) {
+		smp_cpu_setup(1, PSW_WITH_CUR_MASK(cpu_loop));
+		rc = uv_call(0, (uint64_t)&uvcb_init);
+		report(rc == 1 && uvcb_init.header.rc == 0x102,
+		       "too many running cpus");
+		smp_cpu_stop(1);
+	} else {
+		report_skip("Not enough cpus for 0x102 test");
+	}
 
 	rc = uv_call(0, (uint64_t)&uvcb_init);
 	report(rc == 0 && uvcb_init.header.rc == UVC_RC_EXECUTED, "successful");