From: Geoff Levand <geoffrey.levand@am.sony.com>
To: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>,
miltonm@bga.com, clameter@sgi.com, apw@shadowen.org,
linux-kernel@vger.kernel.org
Subject: Re: PS3: trouble with SPARSEMEM_VMEMMAP and kexec
Date: Fri, 07 Dec 2007 19:26:44 -0800 [thread overview]
Message-ID: <475A0EF4.1020502@am.sony.com> (raw)
In-Reply-To: <20071206142552.694B.Y-GOTO@jp.fujitsu.com>
On 12/05/2007 10:09 PM, Yasunori Goto wrote:
>> I'll try Milton's suggestion to pre-allocate the memory early. It seems
>> that should work as long as nothing else before the hot-plug mem is added
>> needs a large chunk.
>
> (However, I think Milton-san's suggestion is very desirable.
> If preallocation of hotadd works on ia64 too, I'm very glad.)
As it turns out, preallocation is not a such a good solution I
think because in the general case the system may need many
allocations to support the added memory, so it would be difficult
to know how much pre-allocated memory is needed. I think a
preferable solution is to use memory from the newly added
region.
I don't plan to work on a pre-allocation method. I think I can
free up sufficient memory in other ways.
-Geoff
next prev parent reply other threads:[~2007-12-08 3:27 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-03 3:59 PS3: trouble with SPARSEMEM_VMEMMAP and kexec Geoff Levand
2007-12-03 15:53 ` Milton Miller
2007-12-04 8:30 ` Geert Uytterhoeven
2007-12-05 4:56 ` Geoff Levand
2007-12-05 4:55 ` Geoff Levand
2007-12-05 9:52 ` Geert Uytterhoeven
2007-12-05 23:11 ` Andrew Morton
2007-12-05 23:45 ` Geoff Levand
2007-12-06 6:09 ` Yasunori Goto
2007-12-06 9:55 ` Geert Uytterhoeven
2007-12-06 9:55 ` Geert Uytterhoeven
2007-12-06 10:48 ` Yasunori Goto
2007-12-08 2:47 ` Geoff Levand
2007-12-10 1:55 ` Yasunori Goto
2007-12-08 3:26 ` Geoff Levand [this message]
2007-12-08 3:49 ` oops with 2.6.23.1, marvel, software raid, reiserfs and samba jeffunit
2007-12-16 11:05 ` Andrew Morton
2007-12-16 11:56 ` Herbert Xu
2007-12-16 12:21 ` Herbert Xu
2007-12-16 14:55 ` jeffunit
2007-12-16 22:09 ` Andrew Morton
2007-12-06 7:41 ` PS3: trouble with SPARSEMEM_VMEMMAP and kexec Geert Uytterhoeven
2007-12-07 5:55 ` Geoff Levand
2007-12-06 5:44 ` Geoff Levand
2007-12-09 4:22 ` sparsemem: Make SPARSEMEM_VMEMMAP selectable Geoff Levand
2007-12-10 5:50 ` Yasunori Goto
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