From: Yinghai Lu <yinghai@kernel.org>
To: Jiri Slaby <jirislaby@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Greg Thelen <gthelen@google.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
cl@linux-foundation.com
Subject: Re: mmotm boot panic bootmem-avoid-dma32-zone-by-default.patch
Date: Thu, 11 Mar 2010 13:42:42 -0800 [thread overview]
Message-ID: <4B9963D2.10002@kernel.org> (raw)
In-Reply-To: <4B996335.7070907@gmail.com>
On 03/11/2010 01:40 PM, Jiri Slaby wrote:
> On 03/11/2010 09:12 PM, Yinghai Lu wrote:
>> On 03/11/2010 02:54 AM, Jiri Slaby wrote:
>>> Hi, yes, it is 2.6.27.
>>
>> SLES 11?
>
> Sorry I wrote that in haste. It is SLES 10 in the end. That means it is
> 2.6.16, not 2.6.27. Hence no sparsemem whatsoever. With SLES11 it should
> be OK, we are using flatmem only for i386.
>
> Whatever, it should be no issue now, as flatmem currently (as of 2.6.25)
> depends on i386.
>
> On the other hand I still considered the patch as applicable to
> contemporary kernels since there might be weird bios e820 maps and huge
> (and sparse) bootmem allocations/reservations (memory cgroups, initrd)
> so that code requiring much memory below 4g (swiotlb) will fail then.
>
> Whatever, in the current kernel, the particular issue I was referring to
> *is not reproducible*.
the point is: we should only put the memmap put high. that is big chunk...
other users should be ok... and leave them alone.
YH
next prev parent reply other threads:[~2010-03-11 21:44 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-04 21:21 mmotm boot panic bootmem-avoid-dma32-zone-by-default.patch Greg Thelen
2010-03-05 3:21 ` Johannes Weiner
2010-03-05 5:00 ` Yinghai Lu
2010-03-05 5:14 ` Yinghai Lu
2010-03-05 12:51 ` Johannes Weiner
2010-03-05 16:38 ` Yinghai
2010-03-05 5:17 ` Greg Thelen
2010-03-05 5:34 ` Greg Thelen
2010-03-05 18:41 ` Yinghai Lu
2010-03-05 18:41 ` Yinghai Lu
2010-03-05 19:09 ` Greg Thelen
2010-03-05 19:09 ` Greg Thelen
2010-03-05 20:38 ` [PATCH] x86/bootmem: introduce bootmem_default_goal Yinghai Lu
2010-03-05 20:38 ` Yinghai Lu
2010-03-06 5:44 ` please don't apply : bootmem: avoid DMA32 zone by default Yinghai Lu
2010-03-06 5:44 ` Yinghai Lu
2010-03-07 0:22 ` Andrew Morton
2010-03-07 0:22 ` Andrew Morton
2010-03-07 0:42 ` Yinghai Lu
2010-03-07 0:42 ` Yinghai Lu
2010-03-07 0:53 ` Yinghai Lu
2010-03-07 0:53 ` Yinghai Lu
2010-03-07 2:15 ` [PATCH] sparsemem: on no vmemmap path put mem_map on node high too Yinghai Lu
2010-03-07 1:03 ` please don't apply : bootmem: avoid DMA32 zone by default Paul Mackerras
2010-03-07 1:03 ` Paul Mackerras
2010-03-07 1:48 ` Stephen Rothwell
2010-03-07 9:16 ` Russell King
2010-03-07 9:16 ` Russell King
2010-03-05 23:58 ` mmotm boot panic bootmem-avoid-dma32-zone-by-default.patch Johannes Weiner
2010-03-05 23:58 ` Johannes Weiner
2010-03-06 1:50 ` Yinghai Lu
2010-03-06 1:50 ` Yinghai Lu
2010-03-06 2:24 ` Johannes Weiner
2010-03-06 2:24 ` Johannes Weiner
2010-03-06 2:31 ` Yinghai Lu
2010-03-06 2:31 ` Yinghai Lu
2010-03-05 9:04 ` Yinghai Lu
2010-03-05 9:04 ` Yinghai Lu
2010-03-05 10:26 ` Jiri Slaby
2010-03-05 10:26 ` Jiri Slaby
2010-03-05 20:27 ` Yinghai Lu
2010-03-07 1:17 ` Yinghai Lu
2010-03-11 10:54 ` Jiri Slaby
2010-03-11 20:12 ` Yinghai Lu
2010-03-11 21:40 ` Jiri Slaby
2010-03-11 21:42 ` Yinghai Lu [this message]
2010-03-05 13:08 ` Johannes Weiner
2010-03-05 13:08 ` Johannes Weiner
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