Commit feff82eb5f40 for kernel

commit feff82eb5f4075d541990d0ba60dad14ea83ea9b
Merge: ff57d59200ba 9b3a2be84803
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Fri Apr 24 10:00:37 2026 -0700

    Merge tag 'riscv-for-linus-7.1-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

    Pull RISC-V updates from Paul Walmsley:
     "There is one significant change outside arch/riscv in this pull
      request: the addition of a set of KUnit tests for strlen(), strnlen(),
      and strrchr().

      Otherwise, the most notable changes are to add some RISC-V-specific
      string function implementations, to remove XIP kernel support, to add
      hardware error exception handling, and to optimize our runtime
      unaligned access speed testing.

      A few comments on the motivation for removing XIP support. It's been
      broken in the RISC-V kernel for months. The code is not easy to
      maintain. Furthermore, for XIP support to truly be useful for RISC-V,
      we think that compile-time feature switches would need to be added for
      many of the RISC-V ISA features and microarchitectural properties that
      are currently implemented with runtime patching. No one has stepped
      forward to take responsibility for that work, so many of us think it's
      best to remove it until clear use cases and champions emerge.

      Summary:

       - Add Kunit correctness testing and microbenchmarks for strlen(),
         strnlen(), and strrchr()

       - Add RISC-V-specific strnlen(), strchr(), strrchr() implementations

       - Add hardware error exception handling

       - Clean up and optimize our unaligned access probe code

       - Enable HAVE_IOREMAP_PROT to be able to use generic_access_phys()

       - Remove XIP kernel support

       - Warn when addresses outside the vmemmap range are passed to
         vmemmap_populate()

       - Update the ACPI FADT revision check to warn if it's not at least
         ACPI v6.6, which is when key RISC-V-specific tables were added to
         the specification

       - Increase COMMAND_LINE_SIZE to 2048 to match ARM64, x86, PowerPC,
         etc.

       - Make kaslr_offset() a static inline function, since there's no need
         for it to show up in the symbol table

       - Add KASLR offset and SATP to the VMCOREINFO ELF notes to improve
         kdump support

       - Add Makefile cleanup rule for vdso_cfi copied source files, and add
         a .gitignore for the build artifacts in that directory

       - Remove some redundant ifdefs that check Kconfig macros

       - Add missing SPDX license tag to the CFI selftest

       - Simplify UTS_MACHINE assignment in the RISC-V Makefile

       - Clarify some unclear comments and remove some superfluous comments

       - Fix various English typos across the RISC-V codebase"

    * tag 'riscv-for-linus-7.1-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (31 commits)
      riscv: Remove support for XIP kernel
      riscv: Reuse compare_unaligned_access() in check_vector_unaligned_access()
      riscv: Split out compare_unaligned_access()
      riscv: Reuse measure_cycles() in check_vector_unaligned_access()
      riscv: Split out measure_cycles() for reuse
      riscv: Clean up & optimize unaligned scalar access probe
      riscv: lib: add strrchr() implementation
      riscv: lib: add strchr() implementation
      riscv: lib: add strnlen() implementation
      lib/string_kunit: extend benchmarks to strnlen() and chr searches
      lib/string_kunit: add performance benchmark for strlen()
      lib/string_kunit: add correctness test for strrchr()
      lib/string_kunit: add correctness test for strnlen()
      lib/string_kunit: add correctness test for strlen()
      riscv: vdso_cfi: Add .gitignore for build artifacts
      riscv: vdso_cfi: Add clean rule for copied sources
      riscv: enable HAVE_IOREMAP_PROT
      riscv: mm: WARN_ON() for bad addresses in vmemmap_populate()
      riscv: acpi: update FADT revision check to 6.6
      riscv: add hardware error trap handler support
      ...