RE: [Xen-devel] boot error on Opteron

["Nakajima, Jun" <jun.nakajima@xxxxxxxxx>]

Andrew Theurer wrote:
> Wondering if anyone has seen anything like this:
> 
> 2 x Opteron, 8 GB memory
> xen-unstable -hg6124
> dom0_mem=917514

I'm aware of the problem, and working on that. You should be able to
work it around by mem=3g to xen, for example. Can you show the memory
map shown by xen like

(XEN) Physical RAM map:
(XEN)  0000000000000000 - 000000000009fc00 (usable)
(XEN)  000000000009fc00 - 00000000000a0000 (reserved)
(XEN)  00000000000ebaf0 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 00000000dffd0000 (usable)
(XEN)  00000000dffd0000 - 00000000dffdf000 (ACPI data)
...

Can you also try PAE Xen (if possible)?

Jun
---
Intel Open Source Technology Center

> 
> xen_mem: Initialising balloon driver.
> SCSI subsystem initialized
> PCI: Probing PCI hardware
> PCI: Probing PCI hardware (bus 00)
> Unable to handle kernel paging request at ffff880037c41000 RIP:
> <ffffffff8015c62d>{do_no_page+1117}
> PGD c00067 PUD c01067 PMD dc0067 PTE 55555555065
> Oops: 0003 [1]
> CPU 0
> Modules linked in:
> Pid: 7, comm: hotplug Not tainted 2.6.12-xen0-up
> RIP: e030:[<ffffffff8015c62d>] <ffffffff8015c62d>{do_no_page+1117}
> RSP: e02b:ffff880037c85d98  EFLAGS: 00010246
> RAX: 0000000007e9d025 RBX: ffff880001033258 RCX: ffff880037c41000
> RDX: ffffffff80707000 RSI: 0000000000000000 RDI: ffff880001033258
> RBP: ffff880000e317e8 R08: 0000000000000000 R09: ffff880037c40010
> R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
> R13: ffff880037c3a9f8 R14: 0000000000400160 R15: ffff880037c879c0
> FS:  0000000000000000(0000) GS:ffffffff80509180(0000)
> knlGS:0000000000000000
> CS:  e033 DS: 0000 ES: 0000
> Process hotplug (pid: 7, threadinfo ffff880037c84000, task
> ffff880001e4e710)
> Stack: 0000000000000000 ffffffff80174ec6 0000000000000000
> ffff880037c40010
>        0000000137c39000 0000000000000000 0000000000400160
> ffff880037c40010
>        ffff880037c879c0 0000000000400160
> Call Trace:<ffffffff80174ec6>{copy_strings+470}
> <ffffffff8015c8c2>{handle_mm_fault+466}
>        <ffffffff8011c536>{do_page_fault+1606}
> <ffffffff8011070b>{sys_execve+123}
>        <ffffffff801124cf>{error_exit+0}
> 
> Code: 48 89 01 8b 4c 24 10 85 c9 74 18 48 89 df e8 d0 96 ff ff 4c
> RIP <ffffffff8015c62d>{do_no_page+1117} RSP <ffff880037c85d98>
> CR2: ffff880037c41000
>  ----------- [cut here ] --------- [please bite here ] ---------
> Kernel BUG at "arch/xen/x86_64/mm/hypervisor.c":64
> invalid operand: 0000 [2]
> CPU 0
> Modules linked in:
> Pid: 7, comm: hotplug Not tainted 2.6.12-xen0-up
> RIP: e030:[<ffffffff8011d8f1>]
> <ffffffff8011d8f1>{xen_l1_entry_update+113}
> RSP: e02b:ffff880037c85a10  EFLAGS: 00010282
> RAX: 00000000ffffffea RBX: ffff880037c41000 RCX: ffffffff8011d8ed
> RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff880037c85a10
> RBP: ffff880037c41000 R08: 00007fffffc5a000 R09: ffff880037c85b58
> R10: 0000000000007ff0 R11: 0000000000000202 R12: 0000000000400000
> R13: 000000000057a000 R14: 000000000057a000 R15: ffff880037c3f000
> FS:  0000000000000000(0000) GS:ffffffff80509180(0000)
> knlGS:0000000000000000
> CS:  e033 DS: 0000 ES: 0000
> Process hotplug (pid: 7, threadinfo ffff880037c84000, task
> ffff880001e4e710)
> Stack: 0000000007dc0208 00000000f7c41067 0000000000000004
> ffffffff8011a990
>        0000000000000003 ffff880037c41000 ffff880001c32e38
> ffffffff8011cec1
>        00000001f7c40010 ffff880001c32e38
> Call Trace:<ffffffff8011a990>{make_page_writable+432}
> <ffffffff8011cec1>{pte_free+97}
>        <ffffffff80159b3d>{free_pgd_range+765}
> <ffffffff80159de6>{free_pgtables+102}
>        <ffffffff801602df>{exit_mmap+143} <ffffffff8012be1b>{mmput+27}
>        <ffffffff8013006b>{do_exit+315}
> <ffffffff80239195>{do_unblank_screen+21}
>        <ffffffff8011c815>{do_page_fault+2341}
> <ffffffff801124cf>{error_exit+0}
>        <ffffffff8021b177>{copy_user_generic_c+13}
> <ffffffff801961b8>{load_elf_binary+5016}
>        <ffffffff801124cf>{error_exit+0}
> <ffffffff8015c62d>{do_no_page+1117}
>        <ffffffff80174ec6>{copy_strings+470}
> <ffffffff8015c8c2>{handle_mm_fault+466}
>        <ffffffff8011c536>{do_page_fault+1606}
> <ffffffff8011070b>{sys_execve+123}
>        <ffffffff801124cf>{error_exit+0}
> 
> ..and this seems to loop infinitly
> 
> -Andrew
> 
> 
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