linux-kernel - Re: Panic on 8-node system in memblock_virt_alloc_try

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Date:	Fri, 24 Jan 2014 10:24:26 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Dave Hansen <dave.hansen@...el.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	Grygorii Strashko <grygorii.strashko@...com>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Tejun Heo <tj@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: Panic on 8-node system in memblock_virt_alloc_try_nid()

On Fri, Jan 24, 2014 at 10:19 AM, Dave Hansen <dave.hansen@...el.com> wrote:
> On 01/24/2014 10:13 AM, Yinghai Lu wrote:
>> On Fri, Jan 24, 2014 at 10:09 AM, Dave Hansen <dave.hansen@...el.com> wrote:
>>> On 01/24/2014 09:45 AM, Yinghai Lu wrote:
>>> Here you go.  It's still spitting out memblock_reserve messages to the
>>> console.  I'm not sure if it's making _some_ progress or not.
>>>
>>>         https://www.sr71.net/~dave/intel/3.13/dmesg.with-2-patches
>>>
>>> But, it's certainly not booting.  Do you want to see it without
>>> memblock=debug?
>>
>> that looks like different problem. and it can not set memory mapping properly.
>>
>> can you send me .config ?
>
> Here you go.
>
> FWIW, I did turn of memblock=debug.  It eventually booted, but
> slooooooooooowly.

then that is not a problem, as you are using 4k page mapping only.
and that printout is too spew...

>
> How many problems in this code are we tracking, btw?  This is at least
> 3, right?

two problems:
1. big numa system.
2. Andrew's system with swiotlb.

The two patches should address them.

Thanks

Yinghai
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