From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: [Xen-devel] dom0 hangs ( possible bug ) - try
	'nopat'
Date: Mon, 12 Apr 2010 10:43:46 -0400
Message-ID: <20100412144346.GA3629@phenom.dumpdata.com>
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To: Onkar Mahajan <kern.devel@gmail.com>
Cc: xen-devel@lists.xensource.com, xen-users@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org

On Sat, Apr 10, 2010 at 08:04:35PM +0530, Onkar Mahajan wrote:



Onkar,

Please restrict the CC to only one of the mailing list instead of all
them.

This is what you are hitting..

5904] Linux agpgart interface v0.103
Apr 11 07:49:56 localhost kernel: [    0.186191] agpgart-intel
0000:00:00.0: Intel G33 Chipset
Apr 11 07:49:56 localhost kernel: [    0.187435] agpgart-intel
0000:00:00.0: detected 7164K stolen memory
Apr 11 07:49:56 localhost kernel: [    0.190616] 1 multicall(s) failed:
cpu 0
Apr 11 07:49:56 localhost kernel: [    0.190692] Pid: 1, comm: swapper
Not tainted 2.6.31.13 #1
Apr 11 07:49:56 localhost kernel: [    0.190763] Call Trace:
Apr 11 07:49:56 localhost kernel: [    0.190833]  [<c148e71d>] ?
printk+0xf/0x11
Apr 11 07:49:56 localhost kernel: [    0.190905]  [<c101ff44>]
xen_mc_flush+0x132/0x212
Apr 11 07:49:56 localhost kernel: [    0.190978]  [<c1020aed>]
xen_mc_issue+0x14/0x42
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c1021981>]
xen_set_domain_pte+0x5d/0x64
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c1021a86>]
xen_set_pte_at+0x33/0x15c
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c119e982>]
ioremap_page_range+0x1ba/0x1fc
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c104051d>]
__ioremap_caller+0x297/0x2d1
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c104062a>]
ioremap_nocache+0xd/0xf
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c1221c06>] ?
intel_i915_configure+0x2ea/0x31b
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c1221c06>]
intel_i915_configure+0x2ea/0x31b
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c121c759>]
agp_add_bridge+0x22d/0x424
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c11ae41e>] ?
do_pci_enable_device+0x32/0x38
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c1476fdd>]
agp_intel_probe+0x1f9/0x210
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c11af3b2>]
local_pci_probe+0xe/0x10
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c11afdb2>]
pci_device_probe+0x43/0x66
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c1257014>]
driver_probe_device+0x79/0xed
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c12570cb>]
__driver_attach+0x43/0x5f
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c12568b3>]
bus_for_each_dev+0x3d/0x67
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c1256eed>]
driver_attach+0x14/0x16
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c1257088>] ?
__driver_attach+0x0/0x5f
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c1256c58>]
bus_add_driver+0x8f/0x1bb
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c119ecf8>] ?
kset_find_obj+0x23/0x4e
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c12572f7>]
driver_register+0x79/0xe0
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c11aff77>]
__pci_register_driver+0x38/0x95
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c1779bdd>] ?
agp_intel_init+0x0/0x24
Apr 11 07:49:56 localhost kernel: [    0.191001]  [<c1779bff>]
agp_intel_init+0x22/0x24



> 
> Please let me know as to where I am going wrong. Or is it a bug ...


Try to use 'nopat' on the Linux kernel command line.