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From: Christoph Schlameuss <schlameuss@linux.ibm.com>
To: linux-s390@vger.kernel.org
Cc: "Janosch Frank" <frankja@linux.ibm.com>,
	"Claudio Imbrenda" <imbrenda@linux.ibm.com>,
	"Nico Böhr" <nrb@linux.ibm.com>,
	"David Hildenbrand" <david@kernel.org>,
	"Thomas Huth" <thuth@redhat.com>,
	kvm@vger.kernel.org,
	"Christoph Schlameuss" <schlameuss@linux.ibm.com>,
	"Nina Schoetterl-Glausch" <nsg@linux.ibm.com>
Subject: [kvm-unit-tests PATCH v3 5/6] s390x: sclp: Add detection of alternate STFLE facilities
Date: Tue, 21 Apr 2026 13:31:11 +0200	[thread overview]
Message-ID: <20260421-vsie-stfle-fac-v3-5-3cee84efefa3@linux.ibm.com> (raw)
In-Reply-To: <20260421-vsie-stfle-fac-v3-0-3cee84efefa3@linux.ibm.com>

From: Nina Schoetterl-Glausch <nsg@linux.ibm.com>

Detect availability of alternate STFLE interpretive execution facilities
1 and 2.

Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Co-developed-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
Signed-off-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
---
 lib/s390x/sclp.c | 5 +++++
 lib/s390x/sclp.h | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/lib/s390x/sclp.c b/lib/s390x/sclp.c
index ad2ba99ee1e1..d4e7eff66c31 100644
--- a/lib/s390x/sclp.c
+++ b/lib/s390x/sclp.c
@@ -181,12 +181,17 @@ void sclp_facilities_setup(void)
 	sclp_facilities.has_cmma = sclp_feat_check(116, SCLP_FEAT_116_BIT_CMMA);
 	sclp_facilities.has_64bscao = sclp_feat_check(116, SCLP_FEAT_116_BIT_64BSCAO);
 	sclp_facilities.has_esca = sclp_feat_check(116, SCLP_FEAT_116_BIT_ESCA);
+	sclp_facilities.has_astfleie1 = sclp_feat_check(116, SCLP_FEAT_116_BIT_ASTFLEIE1);
 	sclp_facilities.has_ibs = sclp_feat_check(117, SCLP_FEAT_117_BIT_IBS);
 	sclp_facilities.has_pfmfi = sclp_feat_check(117, SCLP_FEAT_117_BIT_PFMFI);
 
 	if (read_info->offset_cpu <= 134)
 		return;
 	sclp_facilities.has_diag318 = sclp_feat_check(134, SCLP_FEAT_134_BIT_DIAG318);
+
+	if (read_info->offset_cpu <= 139)
+		return;
+	sclp_facilities.has_astfleie2 = sclp_feat_check(139, SCLP_FEAT_139_BIT_ASTFLEIE2);
 }
 
 /* Perform service call. Return 0 on success, non-zero otherwise. */
diff --git a/lib/s390x/sclp.h b/lib/s390x/sclp.h
index 87af429b5798..eb574350d678 100644
--- a/lib/s390x/sclp.h
+++ b/lib/s390x/sclp.h
@@ -129,9 +129,11 @@ struct sclp_facilities {
 	uint64_t has_cmma : 1;
 	uint64_t has_64bscao : 1;
 	uint64_t has_esca : 1;
+	uint64_t has_astfleie1 : 1;
 	uint64_t has_kss : 1;
 	uint64_t has_pfmfi : 1;
 	uint64_t has_ibs : 1;
+	uint64_t has_astfleie2 : 1;
 };
 
 /* bit number within a certain byte */
@@ -142,9 +144,11 @@ struct sclp_facilities {
 #define SCLP_FEAT_116_BIT_64BSCAO	0
 #define SCLP_FEAT_116_BIT_CMMA		1
 #define SCLP_FEAT_116_BIT_ESCA		4
+#define SCLP_FEAT_116_BIT_ASTFLEIE1	7
 #define SCLP_FEAT_117_BIT_PFMFI		1
 #define SCLP_FEAT_117_BIT_IBS		2
 #define SCLP_FEAT_134_BIT_DIAG318	0
+#define SCLP_FEAT_139_BIT_ASTFLEIE2	1
 
 typedef struct ReadInfo {
 	SCCBHeader h;

-- 
2.53.0


  parent reply	other threads:[~2026-04-21 11:45 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-21 11:31 [kvm-unit-tests PATCH v3 0/6] s390x: Add test for STFLE interpretive execution (format-2) Christoph Schlameuss
2026-04-21 11:31 ` [kvm-unit-tests PATCH v3 1/6] s390x: snippets: Add reset_guest() to lib Christoph Schlameuss
2026-04-21 11:31 ` [kvm-unit-tests PATCH v3 2/6] s390x: sclp: Remove unnecessary padding from struct sclp_facilities Christoph Schlameuss
2026-04-21 11:31 ` [kvm-unit-tests PATCH v3 3/6] s390x: sclp: Rework sclp_facilities_setup() for simpler control flow Christoph Schlameuss
2026-04-21 11:31 ` [kvm-unit-tests PATCH v3 4/6] s390x: sclp: Use sclp_feat_check directly to read DIAG318 feature bit Christoph Schlameuss
2026-04-21 11:31 ` Christoph Schlameuss [this message]
2026-04-21 11:31 ` [kvm-unit-tests PATCH v3 6/6] s390x: Add test for STFLE interpretive execution (format-2) Christoph Schlameuss

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