linux-stable.git/arch/s390/kernel/cpacf.c, branch linux-rolling-stable Linux kernel stable tree s390: Remove KMSG_COMPONENT macro 2025-11-24T10:45:21+00:00 Heiko Carstens hca@linux.ibm.com 2025-11-20T15:30:53+00:00 c3d17464f0262c9e3c156d4c6306e32cf530fa47 The KMSG_COMPONENT macro is a leftover of the s390 specific "kernel message catalog" which never made it upstream. Remove the macro in order to get rid of a pointless indirection. Replace all users with the string it defines. In almost all cases this leads to a simple replacement like this: - #define KMSG_COMPONENT "appldata" - #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #define pr_fmt(fmt) "appldata: " fmt Except for some special cases this is just mechanical/scripted work. Acked-by: Thomas Richter <tmricht@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> 
The KMSG_COMPONENT macro is a leftover of the s390 specific "kernel
message catalog" which never made it upstream.

Remove the macro in order to get rid of a pointless indirection. Replace
all users with the string it defines. In almost all cases this leads to a
simple replacement like this:

 - #define KMSG_COMPONENT "appldata"
 - #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 + #define pr_fmt(fmt) "appldata: " fmt

Except for some special cases this is just mechanical/scripted work.

Acked-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
sysfs: treewide: switch back to attribute_group::bin_attrs 2025-06-17T08:44:15+00:00 Thomas Weißschuh linux@weissschuh.net 2025-05-30T03:54:38+00:00 fb506e31b3d52f7faaec00352c2732ce31c1f930 The normal bin_attrs field can now handle const pointers. This makes the _new variant unnecessary. Switch all users back. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20250530-sysfs-const-bin_attr-final-v3-4-724bfcf05b99@weissschuh.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
The normal bin_attrs field can now handle const pointers.
This makes the _new variant unnecessary.
Switch all users back.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20250530-sysfs-const-bin_attr-final-v3-4-724bfcf05b99@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
s390/crypto/cpacf: Constify 'struct bin_attribute' 2025-01-07T09:05:35+00:00 Thomas Weißschuh linux@weissschuh.net 2024-12-11T17:54:39+00:00 221ce94b1ac56bacde9c55409080838c1b575d3b The sysfs core now allows instances of 'struct bin_attribute' to be moved into read-only memory. Make use of that to protect them against accidental or malicious modifications. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Tested-by: Finn Callies <fcallies@linux.ibm.com> Reviewed-by: Holger Dengler <dengler@linux.ibm.com> Link: https://lore.kernel.org/r/20241211-sysfs-const-bin_attr-s390-v1-1-be01f66bfcf7@weissschuh.net Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> 
The sysfs core now allows instances of 'struct bin_attribute' to be
moved into read-only memory. Make use of that to protect them against
accidental or malicious modifications.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Tested-by: Finn Callies <fcallies@linux.ibm.com>
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Link: https://lore.kernel.org/r/20241211-sysfs-const-bin_attr-s390-v1-1-be01f66bfcf7@weissschuh.net
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
s390/crypto: Display Query and Query Authentication Information in sysfs 2024-09-12T12:13:27+00:00 Finn Callies fcallies@linux.ibm.com 2024-09-11T07:21:09+00:00 9fed8d7c46f37151037334ef5e8b30b945baaceb Displays the query (fc=0) and query authentication information (fc=127) as binary in sysfs per CPACF instruction. Files are located in /sys/devices/system/cpu/cpacf/. These information can be fetched via asm already except for PCKMO because this instruction is privileged. To offer a unified interface all CPACF instructions will have this information displayed in sysfs in files <instruction>_query_raw and <instruction>_query_auth_info_raw. A new tool introduced into s390-tools called cpacfinfo will use this information to convert and display in human readable form. Suggested-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Harald Freudenberger <freude@linux.ibm.com> Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Finn Callies <fcallies@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 
Displays the query (fc=0) and query authentication information (fc=127)
as binary in sysfs per CPACF instruction. Files are located in
/sys/devices/system/cpu/cpacf/. These information can be fetched via
asm already except for PCKMO because this instruction is privileged. To
offer a unified interface all CPACF instructions will have this
information displayed in sysfs in files <instruction>_query_raw and
<instruction>_query_auth_info_raw.

A new tool introduced into s390-tools called cpacfinfo will use this
information to convert and display in human readable form.

Suggested-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Finn Callies <fcallies@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>