On Tue, Jun 30, 2015 at 3:44 PM, Joerg Roedel <[email protected]> wrote:
> On Tue, Jun 30, 2015 at 11:55:24AM +0800, George Wang wrote:
>> [ 11.734774] Call Trace:
>> [ 11.735635] [<ffffffff8168fde1>] __mutex_lock_slowpath+0x91/0x120
>> [ 11.737676] [<ffffffff81318798>] ? ida_simple_get+0x98/0x100
>> [ 11.739682] [<ffffffff8168fe93>] mutex_lock+0x23/0x37
>> [ 11.741407] [<ffffffff8143513a>] amd_iommu_map+0x4a/0x1b0
>> [ 11.743293] [<ffffffff8143081a>] iommu_map+0xfa/0x200
>> [ 11.745025] [<ffffffff81431587>] iommu_group_add_device+0x327/0x390
>> [ 11.747184] [<ffffffff814316fb>] iommu_group_get_forv+0x10b/0x1f0
>> [ 11.849564] [<ffffffff81436ac6>] amd_iommu_add_device+0x1b6/0x580
>
> Ah, your AMD IOMMU system probably has unity mappings defined in its
> ACPI table. I don't have systems with unity mappings defined, so I
> couldn't test this. On what system you are running this test (system or
> mainboard vendor and type)
I am not clear about the unity-mappings, I will do some learning for it.
I run lspic and dmidecode to get some infos about my machine. I am not
sure whether it is useful to you.
If you want to get information, please let me know.
[root@hp-dl385pg8-09 linux-next]# lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890
Northbridge only dual slot (2x16) PCI-e GFX Hydra part (rev 02)
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD/ATI] RD990 I/O Memory
Management Unit (IOMMU)
00:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890 PCI
to PCI bridge (PCI express gpp port B)
00:0a.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890 PCI
to PCI bridge (external gfx1 port A)
00:0c.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890S PCI
Express bridge for GPP2 port 1
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 SATA Controller [IDE mode]
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
--snip--
[root@hp-dl385pg8-09 linux-next]# dmidecode|grep -A16 "System Information"
System Information
Manufacturer: HP
Product Name: ProLiant DL385p Gen8
Version: Not Specified
Serial Number: 6CU428FNLL
UUID: 32333536-3330-4336-5534-3238464E4C4C
Wake-up Type: Power Switch
SKU Number: 653203-B21
Family: ProLiant
>
> Anyway, here is a patch that should fix this issue for you, can you
> please test it?
Thanks for you work. Apply this patch, and it works good for me.
Thanks,
George
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