| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20250826063908.6615-1-yangtiezhu@loongson.cn> Date: Tue, 26 Aug 2025 14:39:08 +0800 From: Tiezhu Yang <yangtiezhu@...ngson.cn> To: Huacai Chen <chenhuacai@...nel.org> Cc: loongarch@...ts.linux.dev, linux-kernel@...r.kernel.org Subject: [PATCH] LoongArch: Update help info of config ARCH_STRICT_ALIGN Loongson 3A6000 and 3C6000 CPUs also support unaligned memory access, so the current description is out of date to some extent. Actually, all of Loongson-3 series processors based on LoongArch support unaligned memory access, this hardware capability is indicated by the bit 20 of CPUCFG1 register, update the help info to reflect the reality. Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn> --- arch/loongarch/Kconfig | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index f0abc38c40ac..fcf6575b02f8 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -563,7 +563,8 @@ config ARCH_STRICT_ALIGN -mstrict-align build parameter to prevent unaligned accesses. CPUs with h/w unaligned access support: - Loongson-2K2000/2K3000/3A5000/3C5000/3D5000. + Loongson-2K2000/2K3000 and all of Loongson-3 series processors + based on LoongArch. CPUs without h/w unaligned access support: Loongson-2K500/2K1000. @@ -573,6 +574,9 @@ config ARCH_STRICT_ALIGN to run kernel only on systems with h/w unaligned access support in order to optimise for performance. + If you want to make sure whether to support unaligned memory access + on your hardware, please read the bit 20 of CPUCFG1 register. + config CPU_HAS_FPU bool default y -- 2.42.0
Powered by blists - more mailing lists