Bug 436485 – F-9 pv_ops xen: x86_64 kernel fails to boot

Bug 436485 - F-9 pv_ops xen: x86_64 kernel fails to boot

Summary:	F-9 pv_ops xen: x86_64 kernel fails to boot

Status:	CLOSED RAWHIDE

Aliases:	None

Product:	Fedora
Classification:	Fedora
Component:	kernel-xen-2.6 (Show other bugs)
Sub Component:
Version:	rawhide
Hardware:	All Linux

Priority	high Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Eduardo Habkost
QA Contact:	Fedora Extras Quality Assurance
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Depends On:
Blocks:	PvOpsTracker
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Reported:	2008-03-07 10:36 EST by Mark McLoughlin
Modified:	2008-03-10 17:08 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
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Story Points:	---
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Environment:
Last Closed:	2008-03-10 17:08:32 EDT
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Regression:	---
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Description Mark McLoughlin 2008-03-07 10:36:57 EST

The latest rawhide kernel-xen (kernel-xen-2.6-2.6.25-0.1.rc4.fc9), fails to boot
on x86_64:

  [<ffffffff8142d7e0>] __alloc_bootmem_core+0x2c8  <--
  [<ffffffff8142d7e0>] __alloc_bootmem_core+0x2c8 
  [<ffffffff8142d654>] __alloc_bootmem_core+0x13c 
  [<ffffffff8142d946>] __alloc_bootmem_node+0x25 
  [<ffffffff812862ac>] sparse_index_alloc+0x48 
  [<ffffffff8142ea2c>] memory_present+0x51 
  [<ffffffff81429c1d>] paging_init+0x3d 
  [<ffffffff81420e4c>] setup_arch+0x57b 
  [<ffffffff8141980c>] start_kernel+0x84 
  [<ffffffff8141f850>] xen_start_kernel+0x32f 

Eduardo is investigating, but what's been determined so far:

  - It boots fine with Eduardo's original config, but not the stock fedora 
    config

  - CONFIG_SPARSEMEM would look to be the obvious culprit, but Eduardo
    had that enabled in his config

  - It could be this:

     -CONFIG_PHYSICAL_START=0x200000
     -CONFIG_PHYSICAL_ALIGN=0x200000
     +CONFIG_PHYSICAL_START=0x1000000
     +CONFIG_PHYSICAL_ALIGN=0x200000

    but reverting that just makes it crash somewhere else

Comment 1 Eduardo Habkost 2008-03-07 12:35:22 EST

.config changes for x86_64 committed to Fedora CVS. Changed PHYSICAL_START and 
SPARSEMEM_VMEMMAP so it doesn't explode on boot.

Comment 2 Eduardo Habkost 2008-03-10 17:08:32 EDT

kernel-xen 2.6.25-0.2.rc4.fc9xen package is on Rawhide.

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