Merge tag 's390-7.2-1' of gitolite.kernel.org:pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Alexander Gordeev:

- Use CIO device online variable instead of the internal FSM state to

Merge tag 's390-7.2-1' of gitolite.kernel.org:pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Alexander Gordeev:

- Use CIO device online variable instead of the internal FSM state to
determine device availability during purge operations

- Remove extra check of task_stack_page() because try_get_task_stack()
already takes care of that when reading /proc/<pid>/wchan

- Allow user-space to use the new SCLP action qualifier 4 for to
provide NVMe SMART log data to the platform.

- Send AP CHANGE uevents on successful bind and successful association
to notify user-space about SE operations on AP queue devices

- Add an s390dbf kernel parameter to configure debug log levels and
area sizes during early boot

- On arm64 the empty zero page is going to be mapped read-only. Do the
same for s390 with an explicit set_memory_ro() call

- Improve s390-specific bcr_serialize() and cpu_relax() implementations

- Remove all unused variables to avoid allmodconfig W=1 build fails
with latest clang-23

- Cleanup default Kconfig values for s390 selftests

- Add a s390-tod trace clock to allow comparing trace timestamps
between different systems or virtual machines on s390

- Remove the s390 implementation of strlcat() in favor of the generic
variant

- Make consistent the calling order between
page_table_check_pte_clear() and secure page conversion across all
code paths

- Rearrange some fields within AP and zcrypt structs to reduce memory
consumption and unused holes

- Shorten GR_NUM and VX_NUM macros and move them to a separate header

- Replace __get_free_page() with kmalloc() in few sources

- Introduce an infrastructure for more efficient this_cpu operations.
Eliminate conditional branches when PREEMPT_NONE is removed

- Enable Rust support

- Use z10 as minimum architecture level, similar to the boot code, to
enforce a defined architecture level set

- Improve and convert various mem*() helper functions to C. For that
add .noinstr.text section to avoid orphaned warnings from the linker

- Fix the function pointer type in __ret_from_fork() to correct the
indirect call to match kernel thread return type of int

- Revert support for DCACHE_WORD_ACCESS to avoid an endless exception
loop on read from donated Ultravisor pages at unaligned addresses

* tag 's390-7.2-1' of gitolite.kernel.org:pub/scm/linux/kernel/git/s390/linux: (52 commits)
s390: Revert support for DCACHE_WORD_ACCESS
s390/process: Fix kernel thread function pointer type
s390/tishift: Convert __ashlti3(), __ashrti3(), __lshrti3() to C
s390/memmove: Optimize backward copy case
s390/string: Convert memset(16|32|64)() to C
s390/string: Convert memcpy() to C
s390/string: Convert memset() to C
s390/string: Convert memmove() to C
s390/string: Add -ffreestanding compile option to string.o
s390: Add .noinstr.text to boot and purgatory linker scripts
s390/purgatory: Enforce z10 minimum architecture level
s390: Enable Rust support
s390/cmpxchg: Fix KASAN stack-out-of-bounds in atomic helpers
rust: helpers: Add memchr wrapper for string operations
rust/bindgen_parameters: Mark s390 types as opaque to prevent repr conflicts
s390/jump_label: Implement ARCH_STATIC_BRANCH_JUMP_ASM and ARCH_STATIC_BRANCH_ASM macros
s390/bug: Provide ARCH_WARN_ASM for Rust WARN/BUG support
s390/ap: Fix locking issue in SE bind and associate sysfs functions
s390/percpu: Provide arch_this_cpu_write() implementation
s390/percpu: Provide arch_this_cpu_read() implementation
...

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s390/tracing: Add s390-tod clock

In order to allow comparing trace timestamps between different
systems or virtual machines on s390, add a s390-tod trace clock.
This clock just uses the returned TOD

s390/tracing: Add s390-tod clock

In order to allow comparing trace timestamps between different
systems or virtual machines on s390, add a s390-tod trace clock.
This clock just uses the returned TOD clock value from stcke
directly.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

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