Bug 436485

Summary: F-9 pv_ops xen: x86_64 kernel fails to boot
Product: [Fedora] Fedora Reporter: Mark McLoughlin <markmc>
Component: kernel-xen-2.6Assignee: Eduardo Habkost <ehabkost>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: berrange, ehabkost, xen-maint
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Hardware: All   
OS: Linux   
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Last Closed: 2008-03-10 21:08:32 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 434756    

Description Mark McLoughlin 2008-03-07 15:36:57 UTC 
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 17:35:22 UTC 
.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 21:08:32 UTC 
kernel-xen 2.6.25-0.2.rc4.fc9xen package is on Rawhide.