From: Dave Hansen <haveblue@us.ibm.com>
To: IWAMOTO Toshihiro <iwamoto@valinux.co.jp>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
lhms <lhms-devel@lists.sourceforge.net>,
linux-mm <linux-mm@kvack.org>
Subject: Re: [Lhms-devel] new memory hotremoval patch
Date: Wed, 30 Jun 2004 16:31:12 -0700 [thread overview]
Message-ID: <1088638272.5265.931.camel@nighthawk> (raw)
In-Reply-To: <20040630111719.EBACF70A92@sv1.valinux.co.jp>
On Wed, 2004-06-30 at 04:17, IWAMOTO Toshihiro wrote:
> Hi,
>
> this is an updated version of my memory hotremoval patch.
> I'll only include the main patch which contains page remapping code.
> The other two files, which haven't changed much from April, can be
> found at http://people.valinux.co.jp/~iwamoto/mh.html .
I tried your code and it oopsed pretty fast:
NUMA - single node, flat memory mode, but broken in several blocks
Rounding down maxpfn 950265 -> 949248
node 0 start 0
node 1 start 65536
node 2 start 131072
node 3 start 196608
node 4 start 262144
node 5 start 327680
node 6 start 393216
node 7 start 458752
physnode_map 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Warning only 1920MB will be used.
Use a HIGHMEM enabled kernel.
1892MB LOWMEM available.
min_low_pfn = 1080, max_low_pfn = 484352, highstart_pfn = 0
Low memory ends at vaddr f6400000
node 0 will remap to vaddr f6400000 -
High memory starts at vaddr 80000000
found SMP MP-table at 0009e1d0
On node 0 totalpages: 65536
DMA zone: 4096 pages, LIFO batch:1
Normal zone: 61440 pages, LIFO batch:15
HighMem zone: 0 pages, LIFO batch:1
...
Node 2 not plugged
Node 5 not plugged
Zone 5 not plugged
Node 8 not plugged
Zone 8 not plugged
Node 2 not plugged
Node 5 not plugged
Node 8 not plugged
disable 11
Unable to handle kernel NULL pointer dereference at virtual address 000003a7
printing eip:
801349b5
*pde = 00000000
Oops: 0002 [#1]
SMP DEBUG_PAGEALLOC
Modules linked in:
CPU: 0
EIP: 0060:[<801349b5>] Not tainted
EFLAGS: 00010206 (2.6.7)
EIP is at mhtest_disable+0x49/0xa0
eax: 0000039f ebx: 0000001f ecx: 00000380 edx: 000000b0
esi: 00000000 edi: 80425ea0 ebp: 0000002c esp: 8c60beec
ds: 007b es: 007b ss: 0068
Process sh (pid: 1842, threadinfo=8c60a000 task=8e549a70)
Stack: 0000000b 0000002c 802cad39 802cad38 00000001 80134dd4 0000000b 00000000
8f9b2f64 8f9b2f88 0000000b 8c60bf28 802cacb0 0000002c 0000000b 61736964
00656c62 000a3131 0000000a 8e4fee58 00000001 8c496f64 0000000a 00000000
Call Trace:
[<80134dd4>] mhtest_write+0x150/0x17d
[<8015daa4>] dupfd+0x2c/0x64
[<8015dac6>] dupfd+0x4e/0x64
[<801788a3>] proc_file_write+0x27/0x34
[<8014ef0c>] vfs_write+0xa0/0xd0
[<8014efb9>] sys_write+0x31/0x4c
[<80103c87>] syscall_call+0x7/0xb
Code: c7 40 08 00 00 00 00 c7 40 04 00 00 00 00 89 c8 03 04 3a 83
$ addr2line -e vmlinux 801349b5
/home/dave/work/linux/2.6/2.6.7/linux-2.6.7-iwamoto/mm/page_alloc.c:2205
The script spit out some errors too:
# sh rotate.sh
2:
rotate.sh: line 11: [: too many arguments
5: rotate.sh: line 11: [: too many arguments
8: rotate.sh: line 11: [: too many arguments
-- Dave
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"aart@kvack.org"> aart@kvack.org </a>
next prev parent reply other threads:[~2004-06-30 23:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-30 11:17 IWAMOTO Toshihiro
2004-06-30 11:32 ` Arjan van de Ven
2004-06-30 14:33 ` [Lhms-devel] " Hirokazu Takahashi
2004-06-30 23:31 ` Dave Hansen [this message]
2004-07-01 2:10 ` [Lhms-devel] " IWAMOTO Toshihiro
2004-07-01 0:11 ` Dave Hansen
2004-07-01 3:05 ` IWAMOTO Toshihiro
2004-07-01 5:28 ` Dave Hansen
2004-07-01 5:58 ` IWAMOTO Toshihiro
2004-07-01 6:15 ` Dave Hansen
2004-07-01 7:16 ` [patch] new memory hotremoval patch for hugetlbpages Hirokazu Takahashi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1088638272.5265.931.camel@nighthawk \
--to=haveblue@us.ibm.com \
--cc=iwamoto@valinux.co.jp \
--cc=lhms-devel@lists.sourceforge.net \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox