March 2, 2022
5:11 p.m.
Hi Guddla, On Wed, Mar 02, 2022 at 10:27:15PM +0530, Guddla Rupesh wrote:
I think that normal kernel shipped by the distro is generic and it doesn't have support for latest instructions like avx2, sse4 etc.,. To get support we must compile kernel with lots of tuning.
I believe most of these features are indicated by CPUID and are tested at runtime/boottime, rather than being compiled in. See https://elixir.bootlin.com/linux/latest/source/arch/x86/include/asm/cpufeatu... Torin