[+cc Joerg, iommu list] Hi Andreas, On Thu, Feb 04, 2016 at 03:53:20PM +0100, Andreas Hartmann wrote: > Hello! > > The following happens with Linux 4.4.1 during boot on an MSI A78M-E35 > board. Additionally, I attached the complete dmesg. Thanks a lot for the report! I cc'd some folks who know more about this than I do. Is this a regression? > [ 1.228987] ------------[ cut here ]------------ > [ 1.228992] WARNING: CPU: 0 PID: 1 at > ../drivers/iommu/amd_iommu_init.c:2301 > amd_iommu_pc_get_set_reg_val+0xa8/0xe0() > [ 1.228993] Modules linked in: > [ 1.228997] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.1-14-default #1 > [ 1.228998] Hardware name: ARLT Computer-Produkte GmbH ARLT Mr. > Whisper Ultimate II R1 (3080527A-U140-V30.5)/A78M-E35 (MS-7721), BIOS > V30.5 10/20/2014 > [ 1.229000] ffffffff819a7f28 ffff88017ed7bd30 ffffffff812f7c89 > 0000000000000000 > [ 1.229002] ffff88017ed7bd68 ffffffff81066ae6 ffff88017ed4a000 > 0000000000000040 > [ 1.229004] 0000000000000000 ffffffff81d3424e 0000000000000007 > ffff88017ed7bd78 > [ 1.229006] Call Trace: > [ 1.229015] [<ffffffff81009075>] try_stack_unwind+0x175/0x190 > [ 1.229021] [<ffffffff81007fa4>] dump_trace+0x64/0x3b0 > [ 1.229024] [<ffffffff810090dd>] show_trace_log_lvl+0x4d/0x60 > [ 1.229026] [<ffffffff81008402>] show_stack_log_lvl+0x112/0x180 > [ 1.229029] [<ffffffff81009135>] show_stack+0x25/0x50 > [ 1.229032] [<ffffffff812f7c89>] dump_stack+0x4b/0x72 > [ 1.229036] [<ffffffff81066ae6>] warn_slowpath_common+0x86/0xc0 > [ 1.229039] [<ffffffff81066bda>] warn_slowpath_null+0x1a/0x20 > [ 1.229041] [<ffffffff8140acf8>] amd_iommu_pc_get_set_reg_val+0xa8/0xe0 > [ 1.229045] [<ffffffff81d6f60d>] iommu_go_to_state+0x501/0x13c4 > [ 1.229048] [<ffffffff81d70543>] amd_iommu_init+0x13/0x253 > [ 1.229051] [<ffffffff81d34260>] pci_iommu_init+0x12/0x3c > [ 1.229053] [<ffffffff81000403>] do_one_initcall+0xd3/0x1f0 > [ 1.229057] [<ffffffff81d2f079>] kernel_init_freeable+0x16d/0x1fa > [ 1.229060] [<ffffffff815fb2ae>] kernel_init+0xe/0xe0 > [ 1.229064] [<ffffffff8160736f>] ret_from_fork+0x3f/0x70 > [ 1.231707] DWARF2 unwinder stuck at ret_from_fork+0x3f/0x70 > > [ 1.231709] Leftover inexact backtrace: > > [ 1.231713] [<ffffffff815fb2a0>] ? rest_init+0x90/0x90 > [ 1.231718] ---[ end trace 100b826816268f19 ]--- > [ 1.231719] AMD-Vi: Unable to write to IOMMU perf counter. > > > What does this mean? > > Thanks, > regards, > Andreas Hartmann > > > > lspci -v > 00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1422 > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, fast devsel, latency 0 > > 00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Device 1423 > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, fast devsel, latency 0, IRQ 24 > Capabilities: [40] Secure device <?> > Capabilities: [54] MSI: Enable+ Count=1/4 Maskable- 64bit+ > Capabilities: [64] HyperTransport: MSI Mapping Enable+ Fixed+ > > 00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. > [AMD/ATI] Kaveri (prog-if 00 [VGA controller]) > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, fast devsel, latency 0, IRQ 34 > Memory at c0000000 (64-bit, prefetchable) [size=256M] > Memory at d0000000 (64-bit, prefetchable) [size=8M] > I/O ports at f000 [size=256] > Memory at feb00000 (32-bit, non-prefetchable) [size=256K] > Expansion ROM at feb40000 [disabled] [size=128K] > Capabilities: [48] Vendor Specific Information: Len=08 <?> > Capabilities: [50] Power Management version 3 > Capabilities: [58] Express Root Complex Integrated Endpoint, MSI 00 > Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ > Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 > Len=010 <?> > Capabilities: [270] #19 > Capabilities: [2b0] Address Translation Service (ATS) > Capabilities: [2c0] #13 > Capabilities: [2d0] #1b > Kernel driver in use: radeon > Kernel modules: radeon, amdgpu > > 00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 1308 > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, fast devsel, latency 0, IRQ 46 > Memory at feb64000 (64-bit, non-prefetchable) [size=16K] > Capabilities: [48] Vendor Specific Information: Len=08 <?> > Capabilities: [50] Power Management version 3 > Capabilities: [58] Express Root Complex Integrated Endpoint, MSI 00 > Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ > Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 > Len=010 <?> > Kernel driver in use: snd_hda_intel > Kernel modules: snd_hda_intel > > 00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1424 > Flags: fast devsel > > 00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1424 > Flags: fast devsel > > 00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 1426 > (prog-if 00 [Normal decode]) > Flags: bus master, fast devsel, latency 0 > Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 > I/O behind bridge: 0000e000-0000efff > Memory behind bridge: fea00000-feafffff > Prefetchable memory behind bridge: 00000000d0800000-00000000d08fffff > Capabilities: [50] Power Management version 3 > Capabilities: [58] Express Root Port (Slot+), MSI 00 > Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+ > Capabilities: [b0] Subsystem: Micro-Star International Co., Ltd. > Device 7721 > Capabilities: [b8] HyperTransport: MSI Mapping Enable+ Fixed+ > Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 > Len=010 <?> > Capabilities: [270] #19 > Kernel driver in use: pcieport > Kernel modules: shpchp > > 00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1424 > Flags: fast devsel > > 00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI > Controller (rev 09) (prog-if 30 [XHCI]) > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, fast devsel, latency 0 > Memory at feb6a000 (64-bit, non-prefetchable) [size=8K] > Capabilities: [50] Power Management version 3 > Capabilities: [70] MSI: Enable- Count=1/8 Maskable- 64bit+ > Capabilities: [90] MSI-X: Enable+ Count=8 Masked- > Capabilities: [a0] Express Root Complex Integrated Endpoint, MSI 00 > Capabilities: [100] Latency Tolerance Reporting > Kernel driver in use: xhci_hcd > Kernel modules: xhci_pci > > 00:10.1 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI > Controller (rev 09) (prog-if 30 [XHCI]) > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, fast devsel, latency 0 > Memory at feb68000 (64-bit, non-prefetchable) [size=8K] > Capabilities: [50] Power Management version 3 > Capabilities: [70] MSI: Enable- Count=1/8 Maskable- 64bit+ > Capabilities: [90] MSI-X: Enable+ Count=8 Masked- > Capabilities: [a0] Express Root Complex Integrated Endpoint, MSI 00 > Kernel driver in use: xhci_hcd > Kernel modules: xhci_pci > > 00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA > Controller [AHCI mode] (rev 40) (prog-if 01 [AHCI 1.0]) > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 25 > I/O ports at f140 [size=8] > I/O ports at f130 [size=4] > I/O ports at f120 [size=8] > I/O ports at f110 [size=4] > I/O ports at f100 [size=16] > Memory at feb71000 (32-bit, non-prefetchable) [size=2K] > Capabilities: [50] MSI: Enable+ Count=8/8 Maskable- 64bit+ > Capabilities: [70] SATA HBA v1.0 > Kernel driver in use: ahci > > 00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI > Controller (rev 11) (prog-if 10 [OHCI]) > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 18 > Memory at feb70000 (32-bit, non-prefetchable) [size=4K] > Kernel driver in use: ohci-pci > Kernel modules: ohci_pci > > 00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI > Controller (rev 11) (prog-if 20 [EHCI]) > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 17 > Memory at feb6f000 (32-bit, non-prefetchable) [size=256] > Capabilities: [c0] Power Management version 2 > Capabilities: [e4] Debug port: BAR=1 offset=00e0 > Kernel driver in use: ehci-pci > Kernel modules: ehci_pci > > 00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI > Controller (rev 11) (prog-if 10 [OHCI]) > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 18 > Memory at feb6e000 (32-bit, non-prefetchable) [size=4K] > Kernel driver in use: ohci-pci > Kernel modules: ohci_pci > > 00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI > Controller (rev 11) (prog-if 20 [EHCI]) > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 17 > Memory at feb6d000 (32-bit, non-prefetchable) [size=256] > Capabilities: [c0] Power Management version 2 > Capabilities: [e4] Debug port: BAR=1 offset=00e0 > Kernel driver in use: ehci-pci > Kernel modules: ehci_pci > > 00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller > (rev 16) > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: 66MHz, medium devsel > Kernel driver in use: piix4_smbus > Kernel modules: i2c_piix4 > > 00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia > Controller (rev 01) > Subsystem: Micro-Star International Co., Ltd. Device d721 > Flags: bus master, slow devsel, latency 32, IRQ 16 > Memory at feb60000 (64-bit, non-prefetchable) [size=16K] > Capabilities: [50] Power Management version 2 > Kernel driver in use: snd_hda_intel > Kernel modules: snd_hda_intel > > 00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge > (rev 11) > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, 66MHz, medium devsel, latency 0 > > 00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] FCH PCI Bridge > (rev 40) (prog-if 01 [Subtractive decode]) > Flags: bus master, VGA palette snoop, 66MHz, medium devsel, > latency 64 > Bus: primary=00, secondary=02, subordinate=02, sec-latency=64 > > 00:14.5 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI > Controller (rev 11) (prog-if 10 [OHCI]) > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 18 > Memory at feb6c000 (32-bit, non-prefetchable) [size=4K] > Kernel driver in use: ohci-pci > Kernel modules: ohci_pci > > 00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 141a > Flags: fast devsel > > 00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 141b > Flags: fast devsel > > 00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 141c > Flags: fast devsel > Kernel modules: amd64_edac_mod > > 00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 141d > Flags: fast devsel > Capabilities: [f0] Secure device <?> > Kernel driver in use: k10temp > Kernel modules: k10temp > > 00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 141e > Flags: fast devsel > Kernel driver in use: fam15h_power > Kernel modules: fam15h_power > > 00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 141f > Flags: fast devsel > > 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. > RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c) > Subsystem: Micro-Star International Co., Ltd. Device 7721 > Flags: bus master, fast devsel, latency 0, IRQ 40 > I/O ports at e000 [size=256] > Memory at fea00000 (64-bit, non-prefetchable) [size=4K] > Memory at d0800000 (64-bit, prefetchable) [size=16K] > Capabilities: [40] Power Management version 3 > Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+ > Capabilities: [70] Express Endpoint, MSI 01 > Capabilities: [b0] MSI-X: Enable- Count=4 Masked- > Capabilities: [d0] Vital Product Data > Capabilities: [100] Advanced Error Reporting > Capabilities: [140] Virtual Channel > Capabilities: [160] Device Serial Number 01-00-00-00-68-4c-e0-00 > Capabilities: [170] Latency Tolerance Reporting > Kernel driver in use: r8168 > Kernel modules: r8169, r8168 > > > lscpu > Architecture: x86_64 > CPU op-mode(s): 32-bit, 64-bit > Byte Order: Little Endian > CPU(s): 4 > On-line CPU(s) list: 0-3 > Thread(s) per core: 2 > Core(s) per socket: 2 > Socket(s): 1 > NUMA node(s): 1 > Vendor ID: AuthenticAMD > CPU family: 21 > Model: 48 > Model name: AMD A10-7800 Radeon R7, 12 Compute Cores 4C+8G > Stepping: 1 > CPU MHz: 1400.000 > BogoMIPS: 6999.61 > Virtualization: AMD-V > L1d cache: 16K > L1i cache: 96K > L2 cache: 2048K > NUMA node0 CPU(s): 0-3 > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
