linux-kernel - Since Linux 4.1: A lot of AMD-Vi IO_PAGE

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Date:	Tue, 21 Jul 2015 17:04:36 +0200
From:	Andreas Hartmann <andihartmann@...19freenet.de>
To:	linux-kernel@...r.kernel.org
Subject: Since Linux 4.1: A lot of AMD-Vi IO_PAGE_FAULTs

Hello!

Since Linux 4.1, I'm getting a lot of IO_PAGE_FAULT like this one

[   17.048609] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:11.0
domain=0x0008 address=0x40ebaaab00618000 flags=0x0010]

with different addresses:

0x40ebaaab00618000
0x40ebaaab00618040
0x0000000000000000
0x0000000000000180
0x00000000000000c0
0x0000000000000080
0x0000000000000100
0x0000000000000040
0x0000000000000140
0x00000000000001c0
0x0000000000000200
0x0000000000000240
0x0000000000000280

...

device=00:11.0 is:

# lspci -vvs 00:11.0
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode] (rev 40) (prog-if 01 [AHCI
1.0])
        Subsystem: Gigabyte Technology Co., Ltd Device b002
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 32, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 19
        Region 0: I/O ports at ff00 [size=8]
        Region 1: I/O ports at fe00 [size=4]
        Region 2: I/O ports at fd00 [size=8]
        Region 3: I/O ports at fc00 [size=4]
        Region 4: I/O ports at fb00 [size=16]
        Region 5: Memory at fdfff000 (32-bit, non-prefetchable) [size=1K]
        Capabilities: [70] SATA HBA v1.0 InCfgSpace
        Capabilities: [a4] PCI Advanced Features
                AFCap: TP+ FLR+
                AFCtrl: FLR-
                AFStatus: TP-
        Kernel driver in use: ahci


Any idea what could be wrong?


Thanks,
kind regards,
Andreas Hartmann
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