Merge tag 'for-linus' of https://github.com/openrisc/linux

Pull OpenRISC updates from Stafford Horne:
"I picked up one series from Chen Miao, our Google Summer of Code
contributor, which adds Ope

Merge tag 'for-linus' of https://github.com/openrisc/linux

Pull OpenRISC updates from Stafford Horne:
"I picked up one series from Chen Miao, our Google Summer of Code
contributor, which adds OpenRISC support for static keys"

* tag 'for-linus' of https://github.com/openrisc/linux:
openrisc: Add jump label support
openrisc: Regenerate defconfigs.
openrisc: Add R_OR1K_32_PCREL relocation type module support
openrisc: Add text patching API support

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openrisc: Add jump label support

Supported a complete jump_label implementation based on the ARM64 and
RV64 version and add the CONFIG_JUMP_LABEL=y to the defconfig.

Testing was conducted using a d

openrisc: Add jump label support

Supported a complete jump_label implementation based on the ARM64 and
RV64 version and add the CONFIG_JUMP_LABEL=y to the defconfig.

Testing was conducted using a dedicated test module jump-label-test,
provided in the link below. For detailed steps, please refer to the
README also at the provided link.

Link: https://github.com/ChenMiaoi/GSoC-2025-Final-Report/tree/main/tests/jump-label-test

Test Environment:
- Hardware: QEMU emulated OR1K
- Kernel Version: 6.17.0-rc3-dirty
- Configs: CONFIG_MODULES=y,CONFIG_MODULE_UNLOAD=y
- Toolchain: or1k-none-linux-musl-gcc 15.1.0

Test Results:
$ insmod jump_label_test.ko
[ 32.590000] Jump label performance test module loaded
[ 35.250000] Normal branch time: 1241327150 ns (124 ns per iteration)
[ 35.250000] Jump label (false) time: 706422700 ns (70 ns per iteration)
[ 35.250000] Jump label (true) time: 708913450 ns (70 ns per iteration)
$ rmmod jump_label_test.ko
[ 72.210000] Jump label test module unloaded

The results show approximately 43% improvement in branch performance
when using jump labels compared to traditional branches.

Link: https://lore.kernel.org/openrisc/aLsZ9S3X0OpKy1RM@antec/T/#u
Signed-off-by: chenmiao <chenmiao.ku@gmail.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>

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openrisc: Add text patching API support

Add text patching api's to use in subsequent jump_label implementation. We use
a new fixmap FIX_TEXT_POKE0 entry to temporarily override MMU mappings to allo

openrisc: Add text patching API support

Add text patching api's to use in subsequent jump_label implementation. We use
a new fixmap FIX_TEXT_POKE0 entry to temporarily override MMU mappings to allow
read only text pages to be written to.

Previously, __set_fix was marked with __init as it was only used during the
EARLYCON stage. Now that TEXT_POKE mappings require post-init usage
(e.g., FIX_TEXT_POKE0), keeping __init would cause runtime bugs whenset_fixmap
accesses invalid memory. Thus, we remove the __init flag to ensure __set_fix
remains valid beyond initialization.

A new function patch_insn_write is exposed to allow single instruction patching.

Link: https://lore.kernel.org/openrisc/aJIC8o1WmVHol9RY@antec/T/#t

Signed-off-by: chenmiao <chenmiao.ku@gmail.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>

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