[Xen-devel] Warnings in dmesg with pvops kernel

[Jun Koi <junkoi2004@xxxxxxxxx>]

hi,

On the latest stage unstable kernel, I can boot Dom0, but dmesg
reports some warnings like below.

It seems something is wrong with AGP initialization?

I am using Core 2 Duo T9400, AGP GM45 chipset.

Any idea?

Thanks,
J

.....
[    0.436299] Non-volatile memory driver v1.3
[    0.436758] Linux agpgart interface v0.103
[    0.436968] agpgart-intel 0000:00:00.0: Intel Mobile Intel® GM45
Express Chipset
[    0.439869] agpgart-intel 0000:00:00.0: detected 32764K stolen memory
[    0.443504] 1 multicall(s) failed: cpu 0
[    0.443567] Pid: 1, comm: swapper Not tainted 2.6.30-rc3-tip #16
[    0.443627] Call Trace:
[    0.443691]  [<c139dc24>] ? printk+0xf/0x11
[    0.443754]  [<c1020f72>] xen_mc_flush+0x11b/0x1dd
[    0.443817]  [<c1021ae8>] xen_mc_issue+0x14/0x23
[    0.443879]  [<c1022968>] xen_set_domain_pte+0x5f/0x66
[    0.443941]  [<c1022a73>] xen_set_pte_at+0x36/0x15d
[    0.444004]  [<c1185663>] ioremap_page_range+0x1b3/0x1f0
[    0.444068]  [<c103e9e5>] __ioremap_caller+0x29b/0x2d7
[    0.444129]  [<c103eaf4>] ioremap_nocache+0xd/0xf
[    0.444191]  [<c11fc9b5>] ? intel_i915_configure+0x372/0x3a3
[    0.444254]  [<c11fc9b5>] intel_i915_configure+0x372/0x3a3
[    0.444316]  [<c11f715a>] agp_add_bridge+0x1c8/0x352
[    0.444377]  [<c1194ee4>] ? __pci_enable_device_flags+0x4f/0x6a
[    0.444440]  [<c1390a23>] agp_intel_probe+0x1f9/0x210
[    0.444452]  [<c1196230>] local_pci_probe+0xe/0x10
[    0.444452]  [<c1196c76>] pci_device_probe+0x43/0x66
[    0.444452]  [<c122bb45>] driver_probe_device+0x7b/0x107
[    0.444452]  [<c122bc14>] __driver_attach+0x43/0x5f
[    0.444452]  [<c122b5aa>] bus_for_each_dev+0x3d/0x67
[    0.444452]  [<c122ba1c>] driver_attach+0x14/0x16
[    0.444452]  [<c122bbd1>] ? __driver_attach+0x0/0x5f
[    0.444452]  [<c122b034>] bus_add_driver+0x9d/0x1b4
[    0.444452]  [<c122be31>] driver_register+0x8b/0xe8
[    0.444452]  [<c1196fde>] __pci_register_driver+0x38/0x92
[    0.444452]  [<c15b4a42>] agp_intel_init+0x22/0x24
[    0.444452]  [<c100304f>] do_one_initcall+0x4a/0x115
[    0.444452]  [<c15b4a20>] ? agp_intel_init+0x0/0x24
[    0.444452]  [<c1088489>] ? register_irq_proc+0x7f/0x9b
[    0.444452]  [<c10884f8>] ? init_irq_proc+0x53/0x60
[    0.444452]  [<c15912e7>] kernel_init+0x106/0x157
[    0.444452]  [<c15911e1>] ? kernel_init+0x0/0x157
[    0.444452]  [<c1026637>] kernel_thread_helper+0x7/0x10
[    0.444452]   call  1/1: op=1 arg=[e31ff8e8] result=-22
xen_mc_entry+0x2a/0x2d

[    0.444452] WARNING: at
/home/xen/stage/linux-2.6-pvops.git/arch/x86/xen/multicalls.c:182
xen_mc_flush+0x1d2/0x1dd()
[    0.444452] Hardware name: 2081A23
[    0.444452] Modules linked in:
[    0.444452] Pid: 1, comm: swapper Not tainted 2.6.30-rc3-tip #16
[    0.444452] Call Trace:
[    0.444452]  [<c104fd75>] warn_slowpath+0x71/0xa0
[    0.444452]  [<c1023674>] ? check_events+0x8/0xc
[    0.444452]  [<c102416e>] ? xen_spin_lock_flags+0xe/0x10
[    0.444452]  [<c102366b>] ? xen_restore_fl_direct_end+0x0/0x1
[    0.444452]  [<c139f991>] ? _spin_unlock_irqrestore+0x24/0x28
[    0.444452]  [<c1022f9f>] ? xen_force_evtchn_callback+0xf/0x14
[    0.444452]  [<c1023674>] ? check_events+0x8/0xc
[    0.444452]  [<c102416e>] ? xen_spin_lock_flags+0xe/0x10
[    0.444452]  [<c102366b>] ? xen_restore_fl_direct_end+0x0/0x1
[    0.444452]  [<c105073e>] ? vprintk+0x283/0x2a6
[    0.444452]  [<c1028df8>] ? show_trace+0x10/0x14
[    0.444452]  [<c139db32>] ? dump_stack+0x57/0x61
[    0.444452]  [<c139dc24>] ? printk+0xf/0x11
[    0.444452]  [<c1022f9f>] ? xen_force_evtchn_callback+0xf/0x14
[    0.444452]  [<c1021029>] xen_mc_flush+0x1d2/0x1dd
[    0.444452]  [<c1021ae8>] xen_mc_issue+0x14/0x23
[    0.444452]  [<c1022968>] xen_set_domain_pte+0x5f/0x66
[    0.444452]  [<c1022a73>] xen_set_pte_at+0x36/0x15d
[    0.444452]  [<c1185663>] ioremap_page_range+0x1b3/0x1f0
[    0.444452]  [<c103e9e5>] __ioremap_caller+0x29b/0x2d7
[    0.444452]  [<c103eaf4>] ioremap_nocache+0xd/0xf
[    0.444452]  [<c11fc9b5>] ? intel_i915_configure+0x372/0x3a3
[    0.444452]  [<c11fc9b5>] intel_i915_configure+0x372/0x3a3
[    0.444452]  [<c11f715a>] agp_add_bridge+0x1c8/0x352
[    0.444452]  [<c1194ee4>] ? __pci_enable_device_flags+0x4f/0x6a
[    0.444452]  [<c1390a23>] agp_intel_probe+0x1f9/0x210
[    0.444452]  [<c1196230>] local_pci_probe+0xe/0x10
[    0.444452]  [<c1196c76>] pci_device_probe+0x43/0x66
[    0.444452]  [<c122bb45>] driver_probe_device+0x7b/0x107
[    0.444452]  [<c122bc14>] __driver_attach+0x43/0x5f
[    0.444452]  [<c122b5aa>] bus_for_each_dev+0x3d/0x67
[    0.444452]  [<c122ba1c>] driver_attach+0x14/0x16
[    0.444452]  [<c122bbd1>] ? __driver_attach+0x0/0x5f
[    0.444452]  [<c122b034>] bus_add_driver+0x9d/0x1b4
[    0.444452]  [<c122be31>] driver_register+0x8b/0xe8
[    0.444452]  [<c1196fde>] __pci_register_driver+0x38/0x92
[    0.444452]  [<c15b4a42>] agp_intel_init+0x22/0x24
[    0.444452]  [<c100304f>] do_one_initcall+0x4a/0x115
[    0.444452]  [<c15b4a20>] ? agp_intel_init+0x0/0x24
[    0.444452]  [<c1088489>] ? register_irq_proc+0x7f/0x9b
[    0.444452]  [<c10884f8>] ? init_irq_proc+0x53/0x60
[    0.444452]  [<c15912e7>] kernel_init+0x106/0x157
[    0.444452]  [<c15911e1>] ? kernel_init+0x0/0x157
[    0.444452]  [<c1026637>] kernel_thread_helper+0x7/0x10
[    0.444452] ---[ end trace f6d830fe32cfebdb ]---
[    0.449523] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xd0000000
[    0.449810] [drm] Initialized drm 1.1.0 20060810
.....

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