| Age | Commit message (Collapse) | Author | Files | Lines | |
|---|---|---|---|---|---|
| 2024-11-07 | asm-generic: introduce text-patching.h | Mike Rapoport (Microsoft) | 1 | -1/+1 | |
| Several architectures support text patching, but they name the header files that declare patching functions differently. Make all such headers consistently named text-patching.h and add an empty header in asm-generic for architectures that do not support text patching. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Rapoport (Microsoft) <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Acked-by: Geert Uytterhoeven <[email protected]> # m68k Acked-by: Arnd Bergmann <[email protected]> Reviewed-by: Luis Chamberlain <[email protected]> Tested-by: kdevops <[email protected]> Cc: Andreas Larsson <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Ard Biesheuvel <[email protected]> Cc: Borislav Petkov (AMD) <[email protected]> Cc: Brian Cain <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Christophe Leroy <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Dinh Nguyen <[email protected]> Cc: Guo Ren <[email protected]> Cc: Helge Deller <[email protected]> Cc: Huacai Chen <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Johannes Berg <[email protected]> Cc: John Paul Adrian Glaubitz <[email protected]> Cc: Kent Overstreet <[email protected]> Cc: Liam R. Howlett <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Masami Hiramatsu (Google) <[email protected]> Cc: Matt Turner <[email protected]> Cc: Max Filippov <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Michal Simek <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Palmer Dabbelt <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Richard Weinberger <[email protected]> Cc: Russell King <[email protected]> Cc: Song Liu <[email protected]> Cc: Stafford Horne <[email protected]> Cc: Steven Rostedt (Google) <[email protected]> Cc: Suren Baghdasaryan <[email protected]> Cc: Thomas Bogendoerfer <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Uladzislau Rezki (Sony) <[email protected]> Cc: Vineet Gupta <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]> | |||||
| 2022-05-17 | parisc: Fix patch code locking and flushing | John David Anglin | 1 | -14/+11 | |
| This change fixes the following: 1) The flags variable is not initialized. Always use raw_spin_lock_irqsave and raw_spin_unlock_irqrestore to serialize patching. 2) flush_kernel_vmap_range is primarily intended for DMA flushes. The whole cache flush in flush_kernel_vmap_range is only possible when interrupts are enabled on SMP machines. Since __patch_text_multiple calls flush_kernel_vmap_range with interrupts disabled, it is better to directly call flush_kernel_dcache_range_asm and flush_kernel_icache_range_asm. 3) The final call to flush_icache_range is unnecessary. Tested with `[PATCH, V3] parisc: Rewrite cache flush code for PA8800/PA8900' change on rp3440, c8000 and c3750 (32 and 64-bit). Note by Helge: This patch had been temporarily reverted shortly before v5.18-rc6 in order to fix boot issues. Now it can be re-applied. Signed-off-by: John David Anglin <[email protected]> Signed-off-by: Helge Deller <[email protected]> | |||||
| 2022-05-08 | Revert "parisc: Fix patch code locking and flushing" | Helge Deller | 1 | -11/+14 | |
| This reverts commit a9fe7fa7d874a536e0540469f314772c054a0323. Leads to segfaults on 32bit kernel. Signed-off-by: Helge Deller <[email protected]> | |||||
| 2022-03-29 | parisc: Fix patch code locking and flushing | John David Anglin | 1 | -14/+11 | |
| This change fixes the following: 1) The flags variable is not initialized. Always use raw_spin_lock_irqsave and raw_spin_unlock_irqrestore to serialize patching. 2) flush_kernel_vmap_range is primarily intended for DMA flushes. Since __patch_text_multiple is often called with interrupts disabled, it is better to directly call flush_kernel_dcache_range_asm and flush_kernel_icache_range_asm. This avoids an extra call. 3) The final call to flush_icache_range is unnecessary. Signed-off-by: John David Anglin <[email protected]> Signed-off-by: Helge Deller <[email protected]> | |||||
| 2019-06-08 | parisc: add spinlock to patch function | Sven Schnelle | 1 | -6/+19 | |
| If multiple CPUs are patching code we need the spinlock to protect against parallel fixmap maps/unmap calls. Signed-off-by: Sven Schnelle <[email protected]> Signed-off-by: Helge Deller <[email protected]> | |||||
| 2019-06-08 | parisc: add support for patching multiple words | Sven Schnelle | 1 | -16/+59 | |
| add patch_text_multiple() which allows to patch multiple text words in memory. This can be used to copy functions. Signed-off-by: Sven Schnelle <[email protected]> Signed-off-by: Helge Deller <[email protected]> | |||||
| 2019-05-03 | parisc: remove unused flags parameter in __patch_text() | Sven Schnelle | 1 | -5/+4 | |
| It's not used by patch_map()/patch_unmap(), so lets remove it. Signed-off-by: Sven Schnelle <[email protected]> Signed-off-by: Helge Deller <[email protected]> | |||||
| 2019-05-03 | parisc: add parisc code patching | Sven Schnelle | 1 | -0/+78 | |
| Instead of re-mapping the whole kernel text with RWX rights add a patch_text() which can be used to replace instructions in the kernel .text section. Based on the ARM implementation. Signed-off-by: Sven Schnelle <[email protected]> Signed-off-by: Helge Deller <[email protected]> | |||||