On 08/12/2025 22.32, Zhuoying Cai wrote:
DIAGNOSE 320 is introduced to support Certificate Store (CS)
Facility, which includes operations such as query certificate
storage information and provide certificates in the certificate
store.
Currently, only subcode 0 is supported with this patch, which is
used to query the Installed Subcodes Mask (ISM).
This subcode is only supported when the CS facility is enabled.
Availability of CS facility is determined by byte 134 bit 5 of the
SCLP Read Info block. Byte 134's facilities cannot be represented
without the availability of the extended-length-SCCB, so add it as
a check for consistency.
Note: secure IPL is not available for Secure Execution (SE) guests,
as their images are already integrity protected, and an additional
protection of the kernel by secure IPL is not necessary.
This feature is available starting with the gen16 CPU model.
Signed-off-by: Zhuoying Cai <[email protected]>
Reviewed-by: Collin Walling <[email protected]>
Reviewed-by: Farhan Ali <[email protected]>
---
...
diff --git a/target/s390x/cpu_features_def.h.inc
b/target/s390x/cpu_features_def.h.inc
index c017bffcdc..941a69e013 100644
--- a/target/s390x/cpu_features_def.h.inc
+++ b/target/s390x/cpu_features_def.h.inc
@@ -138,6 +138,7 @@ DEF_FEAT(SIE_IBS, "ibs", SCLP_CONF_CHAR_EXT, 10, "SIE:
Interlock-and-broadcast-s
/* Features exposed via SCLP SCCB Facilities byte 134 (bit numbers relative to byte-134) */
DEF_FEAT(DIAG_318, "diag318", SCLP_FAC134, 0, "Control program name and version
codes")
+DEF_FEAT(CERT_STORE, "cstore", SCLP_FAC134, 5, "Provide Certificate Store
functions")
Please drop "Provide" from the description text. We don't use such a verb
for any of the other features, so this would be inconsistent now.
Thanks,
Thomas
