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riscv: Re-introduce global icache flush in patch_text_XXX()

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commit edf2d546bf ("riscv: patch: Flush the icache right after
patching to avoid illegal insns") mistakenly removed the global icache
flush in patch_text_nosync() and patch_text_set_nosync() functions, so
reintroduce them.

Fixes: edf2d546bf ("riscv: patch: Flush the icache right after patching to avoid illegal insns")
Reported-by: Samuel Holland <samuel.holland@sifive.com>
Closes: https://lore.kernel.org/linux-riscv/a28ddc26-d77a-470a-a33f-88144f717e86@sifive.com/
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Link: https://lore.kernel.org/r/20240801191404.55181-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Alexandre Ghiti 2024-08-01 21:14:04 +02:00 committed by Palmer Dabbelt
parent de9c2c66ad
commit ee9a68394b
No known key found for this signature in database
GPG Key ID: 2E1319F35FBB1889
1 changed files with 4 additions and 0 deletions
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4
arch/riscv/kernel/patch.c
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@ -205,6 +205,8 @@ int patch_text_set_nosync(void *addr, u8 c, size_t len)
int ret;
ret = patch_insn_set(addr, c, len);
if (!ret)
flush_icache_range((uintptr_t)addr, (uintptr_t)addr + len);
return ret;
}
@ -239,6 +241,8 @@ int patch_text_nosync(void *addr, const void *insns, size_t len)
int ret;
ret = patch_insn_write(addr, insns, len);
if (!ret)
flush_icache_range((uintptr_t)addr, (uintptr_t)addr + len);
return ret;
}