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Message-ID: <20111108223744.GA1996@x1.osrc.amd.com> Date: Tue, 8 Nov 2011 23:37:44 +0100 From: Borislav Petkov <bp@...en8.de> To: Daniel Drake <dsd@...top.org> Cc: "H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...64.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: Geode LX boot fails after x86 microcode revision change 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@....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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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