linux-kernel - Re: [PATCH] x86/microcode: allow non-root reading of microcode version and processor flags

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Message-ID: <8DACDEF8-ED0A-42BF-8426-3AAA4BA16317@alien8.de>
Date:   Sun, 26 Aug 2018 14:52:05 +0300
From:   Boris Petkov <bp@...en8.de>
To:     Jacek Tomaka <jacekt@...eo.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org
CC:     Jacek Tomaka <jacek.tomaka@...zta.fm>
Subject: Re: [PATCH] x86/microcode: allow non-root reading of microcode version and processor flags

On August 25, 2018 6:50:39 AM GMT+03:00, Jacek Tomaka <jacekt@...eo.com> wrote:
>/sys/devices/system/cpu/cpuX/microcode
>
>Before:
>-r-------- processor_flags
>-r-------- version
>
>After:
>-r--r--r-- processor_flags
>-r--r--r-- version
>
>Microcode version has been already readable for non root users via
>/proc/cpuinfo. However it is easier to access it from
>/sys/devices/system/cpu/cpuX/microcode/version

Easier than /proc/cpuinfo?! Sorry, not really. 

You'd need to elaborate in greater detail what exactly you're trying to achieve.

-- 
Sent from a small device: formatting sux and brevity is inevitable.