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
next prev parent 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 [PATCH] x86: prevent unconditional writes to DebugCtl MSR 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
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