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(parent: 16c52e5) | patch
LoongArch: Fix probing of the CRC32 feature
authorHuacai Chen <chenhuacai@loongson.cn>
Tue, 18 Apr 2023 11:38:58 +0000 (19:38 +0800)
committerHuacai Chen <chenhuacai@loongson.cn>
Tue, 18 Apr 2023 11:38:58 +0000 (19:38 +0800)
commitdf830336045db1246d3245d3737fee9939c5f731
tree8a47ba8a0be9163c28452132e051ca380cda08b4tree | snapshot
parent16c52e503043aed1e2a2ce38d9249de5936c1f6bcommit | diff
LoongArch: Fix probing of the CRC32 feature

Not all LoongArch processors support CRC32 instructions. This feature
is indicated by CPUCFG1.CRC32 (Bit25) but it is wrongly defined in the
previous versions of the ISA manual (and so does in loongarch.h). The
CRC32 feature is set unconditionally now, so fix it.

BTW, expose the CRC32 feature in /proc/cpuinfo.

Cc: stable@vger.kernel.org
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
arch/loongarch/include/asm/cpu-features.h diff | blob | history
arch/loongarch/include/asm/cpu.h diff | blob | history
arch/loongarch/include/asm/loongarch.h diff | blob | history
arch/loongarch/kernel/cpu-probe.c diff | blob | history
arch/loongarch/kernel/proc.c diff | blob | history
Domain: System / Kernel;