From: Borislav Petkov <bp@alien8.de>
To: Daniel Drake <dsd@laptop.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@amd64.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: Geode LX boot fails after x86 microcode revision change
Date: Tue, 8 Nov 2011 23:37:44 +0100 [thread overview]
Message-ID: <20111108223744.GA1996@x1.osrc.amd.com> (raw)
In-Reply-To: <CAMLZHHTu-FNphvt5_L7fxqRpPukfs8nbS71x3GYo5GsPBo5cNw@mail.gmail.com>
On Tue, Nov 08, 2011 at 04:17:21PM -0600, Daniel Drake wrote:
> On Tue, Nov 8, 2011 at 4:13 PM, Petkov, Borislav
> <Borislav.Petkov@amd.com> wrote:
> > This could definitely explain why it hangs, the rdmsr_safe call is
> > in early_init_amd(), so it could really be too early for exception tables.
>
> I think this is almost certainly the cause too. The symptoms of this
> issue are exactly the same as the early boot hang once discussed in a
> thread titled "Dynamic nop selection breaks boot on Geode LX" (which
> you wrote to as well) which was a problem of running code before
> having exception tables set up.
Oh yeah, that.
> I haven't yet run your tests except for "rdmsr 0x8b" which returns
> "pread: Input/output error" - let me know if you would still like
> results from the other tests.
Yep, just send me /proc/cpuinfo from a working kernel.
Thanks.
--
Regards/Gruss,
Boris
next prev parent reply other threads:[~2011-11-08 22:37 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-08 19:59 Geode LX boot fails after x86 microcode revision change Daniel Drake
2011-11-08 20:31 ` Borislav Petkov
2011-11-08 22:01 ` H. Peter Anvin
2011-11-08 22:13 ` Petkov, Borislav
2011-11-08 22:17 ` Daniel Drake
2011-11-08 22:37 ` Borislav Petkov [this message]
2011-11-08 22:59 ` Daniel Drake
2011-11-09 17:34 ` Borislav Petkov
2011-11-10 13:05 ` Srivatsa S. Bhat
2011-11-10 13:28 ` Borislav Petkov
2011-11-10 13:37 ` Srivatsa S. Bhat
2011-11-10 13:34 ` Srivatsa S. Bhat
2011-11-11 18:40 ` Daniel Drake
2011-11-12 13:50 ` Borislav Petkov
2011-11-08 22:19 ` H. Peter Anvin
2011-11-08 22:40 ` Borislav Petkov
2011-11-22 13:00 ` Borislav Petkov
2011-11-22 18:54 ` H. Peter Anvin
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