linux-kernel - Re: [3.18+] Can't boot with commit bd809af1 ("x86: Enable PAT to use cache mode translation tables")

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Date:	Mon, 15 Dec 2014 12:52:14 +0100
From:	Juergen Gross <jgross@...e.com>
To:	jongman.heo@...sung.com,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [3.18+] Can't boot with commit bd809af1 ("x86: Enable PAT to
 use cache mode translation tables")

On 12/15/2014 08:52 AM, Jongman Heo wrote:
>> ------- Original Message -------
>> Sender : Juergen Gross
>> Date : 2014-12-15 14:04 (GMT+09:00)
>> Title : Re: [3.18+] Can't boot with commit bd809af1 ("x86: Enable PAT to use cache mode translation tables")
>>
>> On 12/14/2014 06:07 AM, 허종만 wrote:
>>>
>>> Hi,
>>>
>>> My Linux virtual machine on (Windows) VMWare workstation 10 can't boot with following commit.
>>>
>>> commit bd809af16e3ab1f8d55b3e2928c47c67e2a865d2
>>> Author: Juergen Gross
>>> Date:   Mon Nov 3 14:02:03 2014 +0100
>>>
>>>       x86: Enable PAT to use cache mode translation tables
>>>
>>> Unfortunately I can't see any console log.
>>
>> Hmm, weird. Could you provide some more information?
>>
>> Kernel config, hardware used, /proc/cpuinfo of working kernel?
>> Anything you see with earlyprintk enabled?
>>
>>
>> Juergen
> 
> (Sorry for resending this email, previous one bounced from mailing list due to HTML format)
> 
> Hi,
> 
> I'm using Fedora 21, with custom built kernel.
> Host PC is windows 7 64-bit, and running VMWare workstation 10 for guest Fedora Linux.
> 
> With earlyprintk, just following message is printed.
> 
>    early console in setup code
> 
> and nothing more...

Can you try attached diagnostic patch, please? I suspect a problem
regarding VMWares PAT emulation...


Juergen

View attachment "diag.patch" of type "text/x-patch" (570 bytes)