[kvm-unit-tests PATCH v2 3/3] s390x: cpumodel: FMT2 and FMT4 SCLP test

[Janosch Frank <frankja@xxxxxxxxxxxxx>]

SCLP is also part of the cpumodel, so we need to make sure that the
features indicated via read info / read cpu info are correct.

Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
Acked-by: David Hildenbrand <david@xxxxxxxxxx>
---
 s390x/cpumodel.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 70 insertions(+), 1 deletion(-)

diff --git a/s390x/cpumodel.c b/s390x/cpumodel.c
index 4dd8b96f..67bb6543 100644
--- a/s390x/cpumodel.c
+++ b/s390x/cpumodel.c
@@ -2,14 +2,81 @@
 /*
  * Test the known dependencies for facilities
  *
- * Copyright 2019 IBM Corp.
+ * Copyright 2019, 2021 IBM Corp.
  *
  * Authors:
  *    Christian Borntraeger <borntraeger@xxxxxxxxxx>
+ *    Janosch Frank <frankja@xxxxxxxxxxxxx>
  */
 
 #include <asm/facility.h>
 #include <vm.h>
+#include <sclp.h>
+#include <uv.h>
+#include <asm/uv.h>
+
+static void test_sclp_missing_sief2_implications(void)
+{
+	/* Virtualization related facilities */
+	report(!sclp_facilities.has_64bscao, "!64bscao");
+	report(!sclp_facilities.has_pfmfi, "!pfmfi");
+	report(!sclp_facilities.has_gsls, "!gsls");
+	report(!sclp_facilities.has_cmma, "!cmma");
+	report(!sclp_facilities.has_esca, "!esca");
+	report(!sclp_facilities.has_kss, "!kss");
+	report(!sclp_facilities.has_ibs, "!ibs");
+
+	/* Virtualization related facilities reported via CPU entries */
+	report(!sclp_facilities.has_sigpif, "!sigpif");
+	report(!sclp_facilities.has_sief2, "!sief2");
+	report(!sclp_facilities.has_skeyi, "!skeyi");
+	report(!sclp_facilities.has_siif, "!siif");
+	report(!sclp_facilities.has_cei, "!cei");
+	report(!sclp_facilities.has_ib, "!ib");
+}
+
+static void test_sclp_features_fmt4(void)
+{
+	/*
+	 * STFLE facilities are handled by the Ultravisor but SCLP
+	 * facilities are advertised by the hypervisor.
+	 */
+	report_prefix_push("PV guest implies");
+
+	/* General facilities */
+	report(!sclp_facilities.has_diag318, "!diag318");
+
+	/*
+	 * Virtualization related facilities, all of which are
+	 * unavailable because there's no virtualization support in a
+	 * protected guest.
+	 */
+	test_sclp_missing_sief2_implications();
+
+	report_prefix_pop();
+}
+
+static void test_sclp_features_fmt2(void)
+{
+	if (sclp_facilities.has_sief2)
+		return;
+
+	report_prefix_push("!sief2 implies");
+	test_sclp_missing_sief2_implications();
+	report_prefix_pop();
+}
+
+static void test_sclp_features(void)
+{
+	report_prefix_push("sclp");
+
+	if (uv_os_is_guest())
+		test_sclp_features_fmt4();
+	else
+		test_sclp_features_fmt2();
+
+	report_prefix_pop();
+}
 
 static struct {
 	int facility;
@@ -60,6 +127,8 @@ int main(void)
 	}
 	report_prefix_pop();
 
+	test_sclp_features();
+
 	report_prefix_pop();
 	return report_summary();
 }
-- 
2.30.2