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Re: Suspected regression in "x86: extend e820 ealy_res support 32bit"

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From: Jeremy Fitzhardinge <jeremy@...>
To: Yinghai Lu <yhlu.kernel@...>
Cc: Ingo Molnar <mingo@...>, kernel list <linux-kernel@...>, Thomas Gleixner <tglx@...>, H. Peter Anvin <hpa@...>
Subject: Re: Suspected regression in "x86: extend e820 ealy_res support 32bit"
Date: Wednesday, May 21, 2008 - 7:23 pm

Yinghai Lu wrote:

Unfortunately its a bit difficult because printk() output isn't 
appearing at early boot (not sure why).  I'll try to extract something 
useful tomorrow.

Perhaps this is helpful:

This the e820 map of a regular boot:

BIOS-provided physical RAM map:
 Xen: 0000000000000000 - 000000000009f000 (usable)
 Xen: 0000000000100000 - 0000000010000000 (usable)
debug: ignoring loglevel setting.
 limit_regions start: 0000000000000000 - 000000000009f000 (usable)
 limit_regions start: 0000000000100000 - 0000000010000000 (usable)
 limit_regions endfunc: 0000000000000000 - 000000000009f000 (usable)
 limit_regions endfunc: 0000000000100000 - 0000000010000000 (usable)
user-defined physical RAM map:
 user: 0000000000000000 - 000000000009f000 (usable)
 user: 0000000000100000 - 0000000010000000 (usable)
0MB HIGHMEM available.
256MB LOWMEM available.
[...]
Entering add_active_range(0, 0, 65536) 0 entries of 256 used
Zone PFN ranges:
  DMA             0 ->     4096
  Normal       4096 ->    65536
  HighMem     65536 ->    65536
Movable zone start PFN for each node
early_node_map[1] active PFN ranges
    0:        0 ->    65536
On node 0 totalpages: 65536
  DMA zone: 56 pages used for memmap
  DMA zone: 0 pages reserved
  DMA zone: 4040 pages, LIFO batch:0
  Normal zone: 840 pages used for memmap
  Normal zone: 60600 pages, LIFO batch:15
  HighMem zone: 0 pages used for memmap
  Movable zone: 0 pages used for memmap


.config attached.

    J
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Messages in current thread:
Re: Suspected regression in "x86: extend e820 ealy_res suppo..., Yinghai Lu, (Wed May 21, 4:35 pm)
Re: Suspected regression in "x86: extend e820 ealy_res suppo..., Johannes Weiner, (Wed May 21, 7:14 pm)
Re: Suspected regression in "x86: extend e820 ealy_res suppo..., Yinghai Lu, (Wed May 21, 7:23 pm)
Re: Suspected regression in "x86: extend e820 ealy_res suppo..., Jeremy Fitzhardinge, (Wed May 21, 6:01 pm)
Re: Suspected regression in "x86: extend e820 ealy_res suppo..., Yinghai Lu, (Wed May 21, 6:40 pm)
Re: Suspected regression in "x86: extend e820 ealy_res suppo..., Jeremy Fitzhardinge, (Wed May 21, 7:23 pm)
Re: Suspected regression in "x86: extend e820 ealy_res suppo..., Yinghai Lu, (Wed May 21, 9:43 pm)