linux.git/drivers/s390/char, branch vsnprintf

Merge tag 'driver-core-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2024-11-29T19:43:29+00:00

Pull driver core updates from Greg KH:
 "Here is a small set of driver core changes for 6.13-rc1.

  Nothing major for this merge cycle, except for the two simple merge
  conflicts are here just to make life interesting.

  Included in here are:

   - sysfs core changes and preparations for more sysfs api cleanups
     that can come through all driver trees after -rc1 is out

   - fw_devlink fixes based on many reports and debugging sessions

   - list_for_each_reverse() removal, no one was using it!

   - last-minute seq_printf() format string bug found and fixed in many
     drivers all at once.

   - minor bugfixes and changes full details in the shortlog"

* tag 'driver-core-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (35 commits)
  Fix a potential abuse of seq_printf() format string in drivers
  cpu: Remove spurious NULL in attribute_group definition
  s390/con3215: Remove spurious NULL in attribute_group definition
  perf: arm-ni: Remove spurious NULL in attribute_group definition
  driver core: Constify bin_attribute definitions
  sysfs: attribute_group: allow registration of const bin_attribute
  firmware_loader: Fix possible resource leak in fw_log_firmware_info()
  drivers: core: fw_devlink: Fix excess parameter description in docstring
  driver core: class: Correct WARN() message in APIs class_(for_each|find)_device()
  cacheinfo: Use of_property_present() for non-boolean properties
  cdx: Fix cdx_mmap_resource() after constifying attr in ->mmap()
  drivers: core: fw_devlink: Make the error message a bit more useful
  phy: tegra: xusb: Set fwnode for xusb port devices
  drm: display: Set fwnode for aux bus devices
  driver core: fw_devlink: Stop trying to optimize cycle detection logic
  driver core: Constify attribute arguments of binary attributes
  sysfs: bin_attribute: add const read/write callback variants
  sysfs: implement all BIN_ATTR_* macros in terms of __BIN_ATTR()
  sysfs: treewide: constify attribute callback of bin_attribute::llseek()
  sysfs: treewide: constify attribute callback of bin_attribute::mmap()
  ...

Merge tag 's390-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2024-11-19T01:45:41+00:00

Pull s390 updates from Heiko Carstens:

 - Add firmware sysfs interface which allows user space to retrieve the
   dump area size of the machine

 - Add 'measurement_chars_full' CHPID sysfs attribute to make the
   complete associated Channel-Measurements Characteristics Block
   available

 - Add virtio-mem support

 - Move gmap aka KVM page fault handling from the main fault handler to
   KVM code. This is the first step to make s390 KVM page fault handling
   similar to other architectures. With this first step the main fault
   handler does not have any special handling anymore, and therefore
   convert it to support LOCK_MM_AND_FIND_VMA

 - With gcc 14 s390 support for flag output operand support for inline
   assemblies was added. This allows for several optimizations:

     - Provide a cmpxchg inline assembly which makes use of this, and
       provide all variants of arch_try_cmpxchg() so that the compiler
       can generate slightly better code

     - Convert a few cmpxchg() loops to try_cmpxchg() loops

     - Similar to x86 add a CC_OUT() helper macro (and other macros),
       and convert all inline assemblies to make use of them, so that
       depending on compiler version better code can be generated

 - List installed host-key hashes in sysfs if the machine supports the
   Query Ultravisor Keys UVC

 - Add 'Retrieve Secret' ioctl which allows user space in protected
   execution guests to retrieve previously stored secrets from the
   Ultravisor

 - Add pkey-uv module which supports the conversion of Ultravisor
   retrievable secrets to protected keys

 - Extend the existing paes cipher to exploit the full AES-XTS hardware
   acceleration introduced with message-security assist extension 10

 - Convert hopefully all sysfs show functions to use sysfs_emit() so
   that the constant flow of such patches stop

 - For PCI devices make use of the newly added Topology ID attribute to
   enable whole card multi-function support despite the change to PCHID
   per port. Additionally improve the overall robustness and usability
   of the multifunction support

 - Various other small improvements, fixes, and cleanups

* tag 's390-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (133 commits)
  s390/cio/ioasm: Convert to use flag output macros
  s390/cio/qdio: Convert to use flag output macros
  s390/sclp: Convert to use flag output macros
  s390/dasd: Convert to use flag output macros
  s390/boot/physmem: Convert to use flag output macros
  s390/pci: Convert to use flag output macros
  s390/kvm: Convert to use flag output macros
  s390/extmem: Convert to use flag output macros
  s390/string: Convert to use flag output macros
  s390/diag: Convert to use flag output macros
  s390/irq: Convert to use flag output macros
  s390/smp: Convert to use flag output macros
  s390/uv: Convert to use flag output macros
  s390/pai: Convert to use flag output macros
  s390/mm: Convert to use flag output macros
  s390/cpu_mf: Convert to use flag output macros
  s390/cpcmd: Convert to use flag output macros
  s390/topology: Convert to use flag output macros
  s390/time: Convert to use flag output macros
  s390/pageattr: Convert to use flag output macros
  ...

s390/con3215: Remove spurious NULL in attribute_group definition

2024-11-18T15:20:46+00:00

This NULL value is most-likely a copy-paste error from an array
definition. So far the NULL didn't have any effect.
As there will be a union in struct attribute_group at this location,
it will trigger a compiler warning.

Signed-off-by: Thomas Weißschuh 
Link: https://lore.kernel.org/r/20241118-sysfs-const-attribute_group-fixes-v1-2-48e0b0ad8cba@weissschuh.net
Signed-off-by: Greg Kroah-Hartman

s390/sclp: Convert to use flag output macros

2024-11-13T13:31:34+00:00

Use flag output macros in inline asm to allow for better code generation if
the compiler has support for the flag output constraint.

Reviewed-by: Juergen Christ 
Signed-off-by: Heiko Carstens

s390/con3270: Use NULL instead of 0 for pointers

2024-11-12T13:01:27+00:00

Get rid of sparse warnings:
CHECK   drivers/s390/char/con3270.c
  drivers/s390/char/con3270.c:531:15: warning: Using plain integer as NULL pointer
  drivers/s390/char/con3270.c:749:15: warning: Using plain integer as NULL pointer

Signed-off-by: Heiko Carstens

s390/uvdevice: Fix and slightly improve kernel-doc comment

2024-11-07T09:37:00+00:00

Fix incorrect kernel-doc comment style, add missing return statement, fix
incorrect parameter name, and add some additional consistency across all
kernel-doc comments.

Signed-off-by: Heiko Carstens

s390/uvdevice: Support longer secret lists

2024-11-07T09:37:00+00:00

Enable the list IOCTL to provide lists longer than one page (85 entries).
The list IOCTL now accepts any argument length in page granularity.
It fills the argument up to this length with entries until the list
ends. User space unaware of this enhancement will still receive one page
of data and an uv_rc 0x0100.

Signed-off-by: Steffen Eiden 
Reviewed-by: Janosch Frank 
Link: https://lore.kernel.org/r/20241104153609.1361388-1-seiden@linux.ibm.com
Signed-off-by: Janosch Frank 
Message-ID: <20241104153609.1361388-1-seiden@linux.ibm.com>
Signed-off-by: Heiko Carstens

s390/uvdevice: Add Retrieve Secret IOCTL

2024-10-29T10:17:16+00:00

Add a new IOCL number to support the new Retrieve Secret UVC for
user-space.
User-space provides the index of the secret (u16) to retrieve.
The uvdevice calls the Retrieve Secret UVC and copies the secret into
the provided buffer if it fits. To get the secret type, index, and size
user-space needs to call the List UVC first.

Reviewed-by: Christoph Schlameuss 
Reviewed-by: Janosch Frank 
Signed-off-by: Steffen Eiden 
Link: https://lore.kernel.org/r/20241024062638.1465970-4-seiden@linux.ibm.com
Signed-off-by: Janosch Frank 
Signed-off-by: Heiko Carstens

s390/vmur: Switch over to sysfs_emit()

2024-10-25T14:03:26+00:00

Per Documentation/filesystems/sysfs.rst, sysfs_emit() is preferred for
presenting attributes to user space in sysfs. Convert the left-over uses
in the char/vmur code.

Signed-off-by: Mete Durlu 
Reviewed-by: Heiko Carstens 
Signed-off-by: Heiko Carstens

s390/sclp_cpi: Switch over to sysfs_emit()

2024-10-25T14:03:26+00:00

Per Documentation/filesystems/sysfs.rst, sysfs_emit() is preferred for
presenting attributes to user space in sysfs. Convert the left-over uses
in the char/sclp_cpi_sys code.

Signed-off-by: Mete Durlu 
Reviewed-by: Heiko Carstens 
Signed-off-by: Heiko Carstens