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Re: [PATCH 3/6] x86/cpu: proc - remove "wp" status line in cpuinfo

From Mathias Krause <minipli@googlemail.com>
Newsgroups linux.kernel
Subject Re: [PATCH 3/6] x86/cpu: proc - remove "wp" status line in cpuinfo
Date 2017-02-14 17:50 +0100
Message-ID <taOsG-4e9-29@gated-at.bofh.it> (permalink)
References <ta9IR-2Tv-1@gated-at.bofh.it> <ta9IR-2Tv-17@gated-at.bofh.it> <taO9k-47Q-21@gated-at.bofh.it>
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On 14 February 2017 at 17:20, Borislav Petkov <bp@alien8.de> wrote:
> On Sun, Feb 12, 2017 at 10:12:09PM +0100, Mathias Krause wrote:
>> As of commit a5c2a893dbd4 ("x86, 386 removal: Remove
>> CONFIG_X86_WP_WORKS_OK") the kernel won't boot if CR0.WP isn't working
>> correctly. This makes a process reading this file always see "wp : yes"
>> here -- otherwise there would be no process to begin with ;)
>>
>> As this status line in /proc/cpuinfo serves no purpose for quite some
>> time now, get rid of it.
>
> Right, sure, except /proc/cpuinfo's format is kind of an ABI and scripts
> rely on it, I'm being told.

That's the reason I haven't folded this change into patch 2. I had
similar doubts but it's not documented in Documentation/ and kinda
useless to test anyway -- what would a "wp : no" tell one?

> TBH, I'd remove that wp:-line too but this
> is just me. tip guys' call.
>
> FWIW, for all three:
>
> Acked-by: Borislav Petkov <bp@suse.de>

Thanks,
Mathias

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Re: [PATCH 3/6] x86/cpu: proc - remove "wp" status line in cpuinfo Borislav Petkov <bp@alien8.de> - 2017-02-14 17:30 +0100
  Re: [PATCH 3/6] x86/cpu: proc - remove "wp" status line in cpuinfo Mathias Krause <minipli@googlemail.com> - 2017-02-14 17:50 +0100
    Re: [PATCH 3/6] x86/cpu: proc - remove "wp" status line in cpuinfo Borislav Petkov <bp@alien8.de> - 2017-02-14 18:20 +0100

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