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Date:	Thu, 11 Feb 2010 17:14:14 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH -v7 0/35] tip related: not use  bootmem for x86


i've done some testing of the bits Peter has merged into x86/bootmem in -tip, 
and it crashes during early bootup with:

[    0.000000]   #8 [0000012000 - 000001a000]          BOOTMAP ==> [0000012000 - 000001a000]
[    0.000000] bootmem alloc of 4194304 bytes failed!
[    0.000000] Kernel panic - not syncing: Out of memory
[    0.000000] Pid: 0, comm: swapper Not tainted 2.6.33-rc7-tip-00770-g525df42-dirty #16566
[    0.000000] Call Trace:
[    0.000000]  [<ffffffff8167410b>] panic+0x75/0x146
[    0.000000]  [<ffffffff832b0a04>] ___alloc_bootmem_node+0x0/0x60
[    0.000000]  [<ffffffff832b0c27>] __alloc_bootmem+0xb/0xd
[    0.000000]  [<ffffffff832b2d7b>] sparse_init+0x34/0x2d9
[    0.000000]  [<ffffffff832b0dc9>] ? reserve_bootmem+0x20/0x22
[    0.000000]  [<ffffffff832aac44>] paging_init+0x43/0x52
[    0.000000]  [<ffffffff8329fb2e>] setup_arch+0x583/0x615
[    0.000000]  [<ffffffff8105e794>] ? clockevents_register_notifier+0x3e/0x4a
[    0.000000]  [<ffffffff8329db07>] start_kernel+0xf3/0x349
[    0.000000]  [<ffffffff8329d276>] x86_64_start_reservations+0x7d/0x81
[    0.000000]  [<ffffffff8329d3c6>] x86_64_start_kernel+0x14c/0x15b
[    0.000000] Rebooting in 1 seconds..Press any key to enter the menu

full bootlog below, config attached.

Thanks,

	Ingo

[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 2.6.33-rc7-tip-00770-g525df42-dirty (mingo@...ius) (gcc version 4.4.1 20091008 (Red Hat 4.4.1-20) (GCC) ) #16566 SMP Thu Feb 11 18:35:25 CET 2010
[    0.000000] Command line: root=/dev/sda6 earlyprintk=ttyS0,115200 console=ttyS0,115200 debug initcall_debug sysrq_always_enabled ignore_loglevel selinux=0 nmi_watchdog=0 panic=1 3
[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  BIOS-e820: 0000000000000000 - 000000000009f800 (usable)
[    0.000000]  BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved)
[    0.000000]  BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
[    0.000000]  BIOS-e820: 0000000000100000 - 000000003fff0000 (usable)
[    0.000000]  BIOS-e820: 000000003fff0000 - 000000003fff3000 (ACPI NVS)
[    0.000000]  BIOS-e820: 000000003fff3000 - 0000000040000000 (ACPI data)
[    0.000000]  BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
[    0.000000]  BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
[    0.000000] bootconsole [earlyser0] enabled
[    0.000000] debug: ignoring loglevel setting.
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] e820 update range: 0000000000000000 - 0000000000001000 (usable) ==> (reserved)
[    0.000000] e820 remove range: 00000000000a0000 - 0000000000100000 (usable)
[    0.000000] last_pfn = 0x3fff0 max_arch_pfn = 0x400000000
[    0.000000] MTRR default type: uncachable
[    0.000000] MTRR fixed ranges enabled:
[    0.000000]   00000-9FFFF write-back
[    0.000000]   A0000-BFFFF uncachable
[    0.000000]   C0000-C7FFF write-protect
[    0.000000]   C8000-FFFFF uncachable
[    0.000000] MTRR variable ranges enabled:
[    0.000000]   0 base 0000000000 mask FFC0000000 write-back
[    0.000000]   1 disabled
[    0.000000]   2 disabled
[    0.000000]   3 disabled
[    0.000000]   4 disabled
[    0.000000]   5 disabled
[    0.000000]   6 disabled
[    0.000000]   7 disabled
[    0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
[    0.000000] e820 update range: 0000000000001000 - 0000000000010000 (usable) ==> (reserved)
[    0.000000] Scanning 1 areas for low memory corruption
[    0.000000] modified physical RAM map:
[    0.000000]  modified: 0000000000000000 - 0000000000010000 (reserved)
[    0.000000]  modified: 0000000000010000 - 000000000009f800 (usable)
[    0.000000]  modified: 000000000009f800 - 00000000000a0000 (reserved)
[    0.000000]  modified: 00000000000f0000 - 0000000000100000 (reserved)
[    0.000000]  modified: 0000000000100000 - 000000003fff0000 (usable)
[    0.000000]  modified: 000000003fff0000 - 000000003fff3000 (ACPI NVS)
[    0.000000]  modified: 000000003fff3000 - 0000000040000000 (ACPI data)
[    0.000000]  modified: 00000000e0000000 - 00000000f0000000 (reserved)
[    0.000000]  modified: 00000000fec00000 - 0000000100000000 (reserved)
[    0.000000] initial memory mapped : 0 - 20000000
[    0.000000] found SMP MP-table at [ffff8800000f5680] f5680
[    0.000000] init_memory_mapping: 0000000000000000-000000003fff0000
[    0.000000]  0000000000 - 003fff0000 page 4k
[    0.000000] kernel direct mapping tables up to 3fff0000 @ 100000-302000
[    0.000000] (9/32 early reservations) ==> bootmem [0000000000 - 003fff0000]
[    0.000000]   #0 [0001000000 - 000816f1f0]    TEXT DATA BSS ==> [0001000000 - 000816f1f0]
[    0.000000]   #1 [00000f5690 - 0000100000]    BIOS reserved ==> [00000f5690 - 0000100000]
[    0.000000]   #2 [00000f5680 - 00000f5690]     MP-table mpf ==> [00000f5680 - 00000f5690]
[    0.000000]   #3 [000009f800 - 00000f1400]    BIOS reserved ==> [000009f800 - 00000f1400]
[    0.000000]   #4 [00000f152c - 00000f5680]    BIOS reserved ==> [00000f152c - 00000f5680]
[    0.000000]   #5 [00000f1400 - 00000f152c]     MP-table mpc ==> [00000f1400 - 00000f152c]
[    0.000000]   #6 [0000010000 - 0000012000]       TRAMPOLINE ==> [0000010000 - 0000012000]
[    0.000000]   #7 [0000100000 - 0000300000]          PGTABLE ==> [0000100000 - 0000300000]
[    0.000000]   #8 [0000012000 - 000001a000]          BOOTMAP ==> [0000012000 - 000001a000]
[    0.000000] bootmem alloc of 4194304 bytes failed!
[    0.000000] Kernel panic - not syncing: Out of memory
[    0.000000] Pid: 0, comm: swapper Not tainted 2.6.33-rc7-tip-00770-g525df42-dirty #16566
[    0.000000] Call Trace:
[    0.000000]  [<ffffffff8167410b>] panic+0x75/0x146
[    0.000000]  [<ffffffff832b0a04>] ___alloc_bootmem_node+0x0/0x60
[    0.000000]  [<ffffffff832b0c27>] __alloc_bootmem+0xb/0xd
[    0.000000]  [<ffffffff832b2d7b>] sparse_init+0x34/0x2d9
[    0.000000]  [<ffffffff832b0dc9>] ? reserve_bootmem+0x20/0x22
[    0.000000]  [<ffffffff832aac44>] paging_init+0x43/0x52
[    0.000000]  [<ffffffff8329fb2e>] setup_arch+0x583/0x615
[    0.000000]  [<ffffffff8105e794>] ? clockevents_register_notifier+0x3e/0x4a
[    0.000000]  [<ffffffff8329db07>] start_kernel+0xf3/0x349
[    0.000000]  [<ffffffff8329d276>] x86_64_start_reservations+0x7d/0x81
[    0.000000]  [<ffffffff8329d3c6>] x86_64_start_kernel+0x14c/0x15b
[    0.000000] Rebooting in 1 seconds..Press any key to enter the menu


View attachment "config" of type "text/plain" (67356 bytes)

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