Re: [PATCH 1/1] ia64/pci: set mmio decoding on for some host bridge

2013-07-11 Thread ZhenHua
Hi Bjorn, Thanks for your suggestions. I will try to find more information. ZhenHua On 07/11/2013 12:12 AM, Bjorn Helgaas wrote: On Wed, Jul 10, 2013 at 12:23 AM, ZhenHua wrote: Hi Bjorn, On the system that this bug happens, an MCA event is generated while kernel crashed: Transaction

Re: [PATCH 1/1] ia64/pci: set mmio decoding on for some host bridge

2013-07-10 Thread Bjorn Helgaas
On Wed, Jul 10, 2013 at 12:23 AM, ZhenHua wrote: > Hi Bjorn, > On the system that this bug happens, an MCA event is generated while kernel > crashed: > Transaction Address: memory write to address 0x0ae041428 (LMMIO - > SBL Blade 1 SFW DDR Memory) > > I guess the there is some module tryi

Re: [PATCH 1/1] ia64/pci: set mmio decoding on for some host bridge

2013-07-10 Thread ZhenHua
Hi Bjorn, On the system that this bug happens, an MCA event is generated while kernel crashed: Transaction Address: memory write to address 0x0ae041428 (LMMIO - SBL Blade 1 SFW DDR Memory) I guess the there is some module trying to visit the address 0x0ae041428 right after this l

Re: [PATCH 1/1] ia64/pci: set mmio decoding on for some host bridge

2013-07-09 Thread Bjorn Helgaas
On Mon, Jul 8, 2013 at 11:42 PM, Li, Zhen-Hua wrote: > On some IA64 platforms with intel PCI bridge, for example, HP BL890c i2 > with Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port, > when kernel tries to disable the mmio decoding on the PCI bridge devices, > kernel may crash. > >

Re: [PATCH 1/1] ia64/pci: set mmio decoding on for some host bridge

2013-07-08 Thread ZhenHua
Hi Bjorn, I tested on an X86 system with the same chipset, and this bug does not happen. I am not sure why , but if it is needed, I will try to find out why. Thanks ZhenHua On 07/09/2013 01:42 PM, Li, Zhen-Hua wrote: On some IA64 platforms with intel PCI bridge, for example, HP BL890c i2 wit

Re: [PATCH 1/1] ia64/pci: set mmio decoding on for some host bridge

2013-07-08 Thread ZhenHua
Hi Bjorn, Thank you for reviewing this patch. I have created a new one and sent it out. And your questions are answered in that new wmail. Regards ZhenHua On 07/09/2013 04:35 AM, Bjorn Helgaas wrote: On Sun, Jul 7, 2013 at 6:16 PM, Li, Zhen-Hua wrote: On some IA64 platforms with intel PCI b

[PATCH 1/1] ia64/pci: set mmio decoding on for some host bridge

2013-07-08 Thread Li, Zhen-Hua
On some IA64 platforms with intel PCI bridge, for example, HP BL890c i2 with Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port, when kernel tries to disable the mmio decoding on the PCI bridge devices, kernel may crash. And in the comment of function quirk_mmio_always_on, it also says

Re: [PATCH 1/1] ia64/pci: set mmio decoding on for some host bridge

2013-07-08 Thread Bjorn Helgaas
On Sun, Jul 7, 2013 at 6:16 PM, Li, Zhen-Hua wrote: > On some IA64 platforms with intel PCI bridge, for example, HP BL890c i2 > with Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port, > when kernel tries to disable the mmio decoding on the PCI bridge devices, > kernel may crash. > > A

[PATCH 1/1] ia64/pci: set mmio decoding on for some host bridge

2013-07-07 Thread Li, Zhen-Hua
On some IA64 platforms with intel PCI bridge, for example, HP BL890c i2 with Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port, when kernel tries to disable the mmio decoding on the PCI bridge devices, kernel may crash. And in the comment of function quirk_mmio_always_on, it also sa