LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Ingo Molnar <mingo@elte.hu>
To: Roland McGrath <roland@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	Jan Beulich <jbeulich@novell.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86: prevent unconditional writes to DebugCtl MSR
Date: Mon, 21 Apr 2008 17:55:34 +0200	[thread overview]
Message-ID: <20080421155534.GA1284@elte.hu> (raw)
In-Reply-To: <20080418194334.7483627037C@magilla.localdomain>


* Roland McGrath <roland@redhat.com> wrote:

> If TIF_DEBUGCTLMSR is ever set on a machine without the support, that 
> is a bug we should diagnose earlier.  If you want some paranoia, then 
> keep update_debugctlmsr but make it do:
> 
> 	BUG_ON(boot_cpu_data.x86 < 6);
> 
> instead.

agreed. Jan, wanna send a fix for this?

	Ingo

  reply	other threads:[~2008-04-21 15:56 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-18 19:43 Roland McGrath
2008-04-21 15:55 ` Ingo Molnar [this message]
2008-04-21 16:34   ` Jan Beulich
2008-04-21 21:30     ` Roland McGrath
  -- strict thread matches above, loose matches on Subject: below --
2008-03-10 13:11 Jan Beulich
2008-03-10 15:56 ` Andi Kleen
2008-03-10 17:14 ` Ingo Molnar

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20080421155534.GA1284@elte.hu \
    --to=mingo@elte.hu \
    --cc=jbeulich@novell.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=roland@redhat.com \
    --cc=tglx@linutronix.de \
    --subject='Re: [PATCH] x86: prevent unconditional writes to DebugCtl MSR' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).