[kvm-unit-tests PATCH] s390x: Add stsi 3.2.2 tests

Janosch Frank
2020-03-30T12:20:51Z

Subcode 3.2.2 is handled by KVM/QEMU and should therefore be tested
a bit more thorough.

In this test we set a custom name and uuid through the QEMU command
line. Both parameters will be passed to the guest on a stsi subcode
3.2.2 call and will then be checked.

We also compare the total and configured cpu numbers against the smp
reported numbers.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
---
s390x/stsi.c | 62 +++++++++++++++++++++++++++++++++++++++++++++
s390x/unittests.cfg | 1 +
2 files changed, 63 insertions(+)

diff --git a/s390x/stsi.c b/s390x/stsi.c
index e9206bca137d2edb..10e588a78cc05186 100644
--- a/s390x/stsi.c
+++ b/s390x/stsi.c
@@ -14,7 +14,28 @@
#include <asm/page.h>
#include <asm/asm-offsets.h>
#include <asm/interrupt.h>
+#include <smp.h>

+struct stsi_322 {
+ uint8_t reserved[31];
+ uint8_t count;
+ struct {
+ uint8_t reserved2[4];
+ uint16_t total_cpus;
+ uint16_t conf_cpus;
+ uint16_t standby_cpus;
+ uint16_t reserved_cpus;
+ uint8_t name[8];
+ uint32_t caf;
+ uint8_t cpi[16];
+ uint8_t reserved5[3];
+ uint8_t ext_name_encoding;
+ uint32_t reserved3;
+ uint8_t uuid[16];
+ } vm[8];
+ uint8_t reserved4[1504];
+ uint8_t ext_names[8][256];
+};
static uint8_t pagebuf[PAGE_SIZE * 2] __attribute__((aligned(PAGE_SIZE * 2)));

static void test_specs(void)
@@ -76,11 +97,52 @@ static void test_fc(void)
report(stsi_get_fc(pagebuf) >= 2, "query fc >= 2");
}

+static void test_3_2_2(void)
+{
+ int rc;
+ /* EBCDIC for "kvm-unit" */
+ uint8_t vm_name[] = { 0x92, 0xa5, 0x94, 0x60, 0xa4, 0x95, 0x89, 0xa3 };
+ uint8_t uuid[] = { 0x0f, 0xb8, 0x4a, 0x86, 0x72, 0x7c,
+ 0x11, 0xea, 0xbc, 0x55, 0x02, 0x42, 0xac, 0x13,
+ 0x00, 0x03 };
+ /* EBCDIC for "KVM/" */
+ uint8_t cpi_kvm[] = { 0xd2, 0xe5, 0xd4, 0x61 };
+ const char *vm_name_ext = "kvm-unit-test";
+ struct stsi_322 *data = (void *)pagebuf;
+
+ /* Is the function code available at all? */
+ if (stsi_get_fc(pagebuf) < 3)
+ return;
+
+ report_prefix_push("3.2.2");
+ rc = stsi(pagebuf, 3, 2, 2);
+ report(!rc, "call");
+
+ /* For now we concentrate on KVM/QEMU */
+ if (memcmp(&data->vm[0].cpi, cpi_kvm, sizeof(cpi_kvm)))
+ goto out;
+
+ report(data->vm[0].total_cpus == smp_query_num_cpus(), "cpu # total");
+ report(data->vm[0].conf_cpus == smp_query_num_cpus(), "cpu # configured");
+ report(data->vm[0].standby_cpus == 0, "cpu # standby");
+ report(data->vm[0].reserved_cpus == 0, "cpu # reserved");
+ report(!memcmp(data->vm[0].name, vm_name, sizeof(data->vm[0].name)),
+ "VM name == kvm-unit-test");
+ report(data->vm[0].ext_name_encoding == 2, "ext name encoding UTF-8");
+ report(!memcmp(data->ext_names[0], vm_name_ext, sizeof(vm_name_ext)),
+ "ext VM name == kvm-unit-test");
+ report(!memcmp(data->vm[0].uuid, uuid, sizeof(uuid)), "uuid");
+
+out:
+ report_prefix_pop();
+}
+
int main(void)
{
report_prefix_push("stsi");
test_priv();
test_specs();
test_fc();
+ test_3_2_2();
return report_summary();
}
diff --git a/s390x/unittests.cfg b/s390x/unittests.cfg
index 12d46c5b402328bb..16e876344e1957ec 100644
--- a/s390x/unittests.cfg
+++ b/s390x/unittests.cfg
@@ -71,6 +71,7 @@ extra_params=-device diag288,id=watchdog0 --watchdog-action inject-nmi

[stsi]
file = stsi.elf
+extra_params=-name kvm-unit-test --uuid 0fb84a86-727c-11ea-bc55-0242ac130003

[smp]
file = smp.elf
--
2.25.1