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From: "Yinghai Lu" <yhlu.kernel@gmail.com>
To: "Christoph Lameter" <clameter@sgi.com>,
"Eric W. Biederman" <ebiederm@xmission.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: kexec fail
Date: Mon, 7 Jan 2008 18:37:56 -0800 [thread overview]
Message-ID: <86802c440801071837q1d6d63ewf095c9b497b33785@mail.gmail.com> (raw)
just found that when kexec 2.6.24-rc7 from RHEL 5.1 kernel got
Your BIOS doesn't leave a aperture memory hole
Please enable the IOMMU option in the BIOS setup
This costs you 64 MB of RAM
Mapping aperture over 65536 KB of RAM @ 20000000
Bad page state in process 'swapper'
page:ffffe20004000018 flags:0x0000000000000000
mapping:0000000000000000 mapcount:1 count:0
Trying to fix it up, but a reboot is needed
Backtrace:
Pid: 0, comm: swapper Not tainted 2.6.24-rc7-smp #1
Call Trace:
[<ffffffff80263fa3>] bad_page+0x63/0x8d
[<ffffffff802640ed>] __free_pages_ok+0x7c/0x2a5
[<ffffffff80ba7161>] free_all_bootmem_core+0xd0/0x198
[<ffffffff80ba3a22>] numa_free_all_bootmem+0x3b/0x76
[<ffffffff80ba30a2>] mem_init+0x4e/0x165
[<ffffffff80b959dc>] start_kernel+0x236/0x2c2
[<ffffffff80b95123>] _sinittext+0x123/0x12a
Bad page state in process 'swapper'
page:ffffe20004000050 flags:0x0000000000000000
mapping:0000000000000000 mapcount:1 count:0
Trying to fix it up, but a reboot is needed
Backtrace:
Pid: 0, comm: swapper Tainted: G B 2.6.24-rc7-smp #1
Call Trace:
[<ffffffff80263fa3>] bad_page+0x63/0x8d
[<ffffffff802640ed>] __free_pages_ok+0x7c/0x2a5
[<ffffffff80ba7161>] free_all_bootmem_core+0xd0/0x198
[<ffffffff80ba3a22>] numa_free_all_bootmem+0x3b/0x76
[<ffffffff80ba30a2>] mem_init+0x4e/0x165
[<ffffffff80b959dc>] start_kernel+0x236/0x2c2
[<ffffffff80b95123>] _sinittext+0x123/0x12a
...
somewhere from 64M
start_kernel
==> mem_init
==> numa_free_all_bootmem
==> free_all_bootmem_node (NODE_DATA(i))
==> free_all_bootmem_core ()
==> __free_pages_boot_mem
==> __free_pages(page, oder)
==>
__free_pages_ok(page, order)
==>
free_pages_check
==> bad_pages...
try to kexec 2.6.23 from RHEL 5.1, will get
Your BIOS doesn't leave a aperture memory hole
Please enable the IOMMU option in the BIOS setup
This costs you 64 MB of RAM ======> reboot
but 2.6.24-rc7 kexec 2.6.24-rc7 is ok.
YH
next reply other threads:[~2008-01-08 2:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-08 2:37 Yinghai Lu [this message]
2008-01-08 5:50 ` Christoph Lameter
2008-01-08 8:15 ` Yinghai Lu
2008-01-08 22:36 ` Yinghai Lu
2008-01-11 3:13 ` Yinghai Lu
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