Re: [PATCH] x86, microcode: Make reload interface per system

H. Peter Anvin
2012-06-20T23:49:49Z

On 06/20/2012 04:46 PM, Henrique de Moraes Holschuh wrote:
>
> Well, it makes the kernel tell us what (amd/intel/whatever) firmware it
> wants, and requires (after patching) a simple echo 1 >foo to activate. It
> is also harmless if activated without updated firmware in place.
>
> /dev/cpu/microcode requires special software (or a dd with bs>=file size),
> since it borks if userspace breaks a microcode into two write() syscalls,
> and requires detection of the cpu vendor. Very annoying.
>

Yeah, because dd is such an exotic piece of software...

-hpa

--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.