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From: Yinghai Lu <yinghai@kernel.org>
To: Josh Poimboeuf <jpoimboe@redhat.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Borislav Petkov <bp@alien8.de>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Brian Gerst <brgerst@gmail.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Borislav Petkov <bp@suse.de>,
	Peter Zijlstra <peterz@infradead.org>,
	Denys Vlasenko <dvlasenk@redhat.com>,
	Ingo Molnar <mingo@kernel.org>, Andy Lutomirski <luto@kernel.org>
Cc: "linux-tip-commits@vger.kernel.org"  <linux-tip-commits@vger.kernel.org>
Subject: Re: [tip:x86/cpu] x86/cpu: Get rid of the show_msr= boot option
Date: Wed, 26 Oct 2016 15:25:02 -0700	[thread overview]
Message-ID: <CAE9FiQWeinByZf3CKcnvnrcybDtJGam5WHT744ZW_ixm2GJFbw@mail.gmail.com> (raw)
In-Reply-To: <tip-59c6f278bdeea4147e8be92a3ed50a9907e60088@git.kernel.org>

On Tue, Oct 25, 2016 at 3:34 AM, tip-bot for Borislav Petkov
<tipbot@zytor.com> wrote:
> Commit-ID:  59c6f278bdeea4147e8be92a3ed50a9907e60088
> Gitweb:     http://git.kernel.org/tip/59c6f278bdeea4147e8be92a3ed50a9907e60088
> Author:     Borislav Petkov <bp@suse.de>
> AuthorDate: Mon, 24 Oct 2016 19:38:44 +0200
> Committer:  Ingo Molnar <mingo@kernel.org>
> CommitDate: Tue, 25 Oct 2016 11:48:50 +0200
>
> x86/cpu: Get rid of the show_msr= boot option
>
> It is useless as it dumps the MSRs too early BUT(!) we do set MSRs later too.

So that is reason that was added to print the MSR early before kernel
try to change it.

> Also, it dumps only BSP MSRs as it gets called only for CPU 0.

I sent the fix last year.

https://patchwork.kernel.org/patch/6739171/

Yinghai

      reply	other threads:[~2016-10-26 22:26 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-24 17:38 [PATCH 0/3] x86/CPU: Get rid of show_msr Borislav Petkov
2016-10-24 17:38 ` [PATCH 1/3] x86/CPU: Remove the printk format specifier in "CPU0: " Borislav Petkov
2016-10-25 10:33   ` [tip:x86/cpu] x86/cpu: " tip-bot for Borislav Petkov
2016-10-24 17:38 ` [PATCH 2/3] x86/CPU: Merge bugs.c and bugs_64.c Borislav Petkov
2016-10-25 10:33   ` [tip:x86/cpu] x86/cpu: " tip-bot for Borislav Petkov
2016-10-24 17:38 ` [PATCH 3/3] x86/CPU: Get rid of show_msr Borislav Petkov
2016-10-25 10:34   ` [tip:x86/cpu] x86/cpu: Get rid of the show_msr= boot option tip-bot for Borislav Petkov
2016-10-26 22:25     ` Yinghai Lu [this message]

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