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742adaa1 |
| 05-Oct-2025 |
Linus Torvalds <torvalds@linux-foundation.org> |
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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4735037b |
| 05-Sep-2025 |
chenmiao <chenmiao.ku@gmail.com> |
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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