diff options
| author | Huacai Chen <chenhuacai@loongson.cn> | 2025-09-18 19:44:01 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2025-09-18 19:44:01 +0800 |
| commit | a9d13433fe17be0e867e51e71a1acd2731fbef8d (patch) | |
| tree | a9794c6999096d3c37dcde61b1fa8cd03cd97768 | |
| parent | f5003098e2f337d8e8a87dc636250e3fa978d9ad (diff) | |
LoongArch: Align ACPI structures if ARCH_STRICT_ALIGN enabled
ARCH_STRICT_ALIGN is used for hardware without UAL, now it only control
the -mstrict-align flag. However, ACPI structures are packed by default
so will cause unaligned accesses.
To avoid this, define ACPI_MISALIGNMENT_NOT_SUPPORTED in asm/acenv.h to
align ACPI structures if ARCH_STRICT_ALIGN enabled.
Cc: stable@vger.kernel.org
Reported-by: Binbin Zhou <zhoubinbin@loongson.cn>
Suggested-by: Xi Ruoyao <xry111@xry111.site>
Suggested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
| -rw-r--r-- | arch/loongarch/include/asm/acenv.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/loongarch/include/asm/acenv.h b/arch/loongarch/include/asm/acenv.h index 52f298f7293b..483c955f2ae5 100644 --- a/arch/loongarch/include/asm/acenv.h +++ b/arch/loongarch/include/asm/acenv.h @@ -10,9 +10,8 @@ #ifndef _ASM_LOONGARCH_ACENV_H #define _ASM_LOONGARCH_ACENV_H -/* - * This header is required by ACPI core, but we have nothing to fill in - * right now. Will be updated later when needed. - */ +#ifdef CONFIG_ARCH_STRICT_ALIGN +#define ACPI_MISALIGNMENT_NOT_SUPPORTED +#endif /* CONFIG_ARCH_STRICT_ALIGN */ #endif /* _ASM_LOONGARCH_ACENV_H */ |