linux-kernel - Re: [PATCH] x86, microcode: Remove unnecessary paravirt

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Message-ID: <CAHp75Vdu=rgNgPvBe2Frptz=eB7r9hWgbM9Cb-ttERF9MyLmTg@mail.gmail.com>
Date:	Fri, 19 Feb 2016 13:00:35 +0200
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	Borislav Petkov <bp@...en8.de>
Cc:	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	david.vrabel@...rix.com,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	xen-devel@...ts.xenproject.org
Subject: Re: [PATCH] x86, microcode: Remove unnecessary paravirt_enabled check

On Fri, Feb 19, 2016 at 12:50 PM, Andy Shevchenko
<andy.shevchenko@...il.com> wrote:
> On Fri, Feb 19, 2016 at 12:46 PM, Borislav Petkov <bp@...en8.de> wrote:
>> On Fri, Feb 19, 2016 at 12:33:46PM +0200, Andy Shevchenko wrote:

>>> commit 84aba677f009e20185aea322563389ad56e0ef7e
>>> Author: Boris Ostrovsky <boris.ostrovsky@...cle.com>
>>> Date:   Tue Feb 16 09:43:19 2016 +0100
>>>
>>>     x86/microcode: Remove unnecessary paravirt_enabled check
>>>
>>> One more thing: I run this kernel as a second from kexec. It might be
>>> related as well. For now I have no possibility to run it as a first
>>> kernel.
>>
>> Well, how exactly are you triggering this? Do you have a splat or some
>> other register dump so that I can try to pinpoint this. I'll need more
>> info so that I can reproduce it here and debug it.
>
> It stuck at some point during boot. I'm trying to get earlycon or
> earlyprintk to show me something...

That what I see last with earlycon enabled + `debug` in cmdline:

…
[    0.000000] Console: colour VGA+ 80x25
[    0.000000] console [tty1] enabled
[    0.000000] console [ttyS1] enabled
[    0.000000] bootconsole [uart8250] disabled

Without it I see nothing at all.

-- 
With Best Regards,
Andy Shevchenko