linux-kernel - Re: [patch V2 1/2] sysfs/cpu: Add vulnerability folder

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Date:   Sun, 7 Jan 2018 22:50:58 -0500
From:   Konrad Rzeszutek Wilk <konrad@...nel.org>
To:     Alexey Dobriyan <adobriyan@...il.com>
Cc:     tglx@...utronix.de, linux-kernel@...r.kernel.org
Subject: Re: [patch V2 1/2] sysfs/cpu: Add vulnerability folder

On Mon, Jan 08, 2018 at 01:22:04AM +0300, Alexey Dobriyan wrote:
> Thomas Gleixner wrote:
> > Create /sys/devices/system/cpu/vulnerabilities folder and files for
> > meltdown, spectre_v1 and spectre_v2.
> 
> It is called "grep -e '^bugs' /proc/cpuinfo".
> 
> kpti is deduceable from .config and /proc/cmdline .
> If people don't know what .config they are running, god bless them.

It is not just for meltdown (kpti). You also have retpoline and IBRS
which is for spectre.