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
next prev 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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