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From: Christian Zigotzky <chzigotzky@xenosoft.de>
To: Christoph Hellwig <hch@lst.de>
Cc: linux-arch@vger.kernel.org, darren@stevens-zone.net,
	mad skateman <madskateman@gmail.com>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	iommu@lists.linux-foundation.org,
	Rob Herring <robh+dt@kernel.org>,
	paulus@samba.org, rtd2@xtra.co.nz,
	"contact@a-eon.com" <contact@a-eon.com>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	nsaenzjulienne@suse.de
Subject: Re: Bug 205201 - overflow of DMA mask and bus mask
Date: Mon, 11 Nov 2019 13:22:55 +0100
Message-ID: <a794864f-04ae-9b90-50e7-01b416c861fe@xenosoft.de> (raw)
In-Reply-To: <0c5a8009-d28b-601f-3d1a-9de0e869911c@xenosoft.de>

On 11 November 2019 at 09:16 am, Christian Zigotzky wrote:
> On 11 November 2019 at 09:12 am, Christian Zigotzky wrote:
>> On 10 November 2019 at 08:27 am, Christian Zigotzky wrote:
>>> On 07 November 2019 at 10:53 am, Christian Zigotzky wrote:
>>>> On 05 November 2019 at 05:28 pm, Christoph Hellwig wrote:
>>>>> On Tue, Nov 05, 2019 at 08:56:27AM +0100, Christian Zigotzky wrote:
>>>>>> Hi All,
>>>>>>
>>>>>> We still have DMA problems with some PCI devices. Since the 
>>>>>> PowerPC updates
>>>>>> 4.21-1 [1] we need to decrease the RAM to 3500MB (mem=3500M) if 
>>>>>> we want to
>>>>>> work with our PCI devices. The FSL P5020 and P5040 have these 
>>>>>> problems
>>>>>> currently.
>>>>>>
>>>>>> Error message:
>>>>>>
>>>>>> [   25.654852] bttv 1000:04:05.0: overflow 
>>>>>> 0x00000000fe077000+4096 of DMA
>>>>>> mask ffffffff bus mask df000000
>>>>>>
>>>>>> All 5.x Linux kernels can't initialize a SCSI PCI card anymore so 
>>>>>> booting
>>>>>> of a Linux userland isn't possible.
>>>>>>
>>>>>> PLEASE check the DMA changes in the PowerPC updates 4.21-1 [1]. 
>>>>>> The kernel
>>>>>> 4.20 works with all PCI devices without limitation of RAM.
>>>>> Can you send me the .config and a dmesg?  And in the meantime try the
>>>>> patch below?
>>>>>
>>>>> ---
>>>>> >From 4d659b7311bd4141fdd3eeeb80fa2d7602ea01d4 Mon Sep 17 00:00:00 
>>>>> 2001
>>>>> From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
>>>>> Date: Fri, 18 Oct 2019 13:00:43 +0200
>>>>> Subject: dma-direct: check for overflows on 32 bit DMA addresses
>>>>>
>>>>> As seen on the new Raspberry Pi 4 and sta2x11's DMA implementation 
>>>>> it is
>>>>> possible for a device configured with 32 bit DMA addresses and a 
>>>>> partial
>>>>> DMA mapping located at the end of the address space to overflow. It
>>>>> happens when a higher physical address, not DMAable, is translated to
>>>>> it's DMA counterpart.
>>>>>
>>>>> For example the Raspberry Pi 4, configurable up to 4 GB of memory, 
>>>>> has
>>>>> an interconnect capable of addressing the lower 1 GB of physical 
>>>>> memory
>>>>> with a DMA offset of 0xc0000000. It transpires that, any attempt to
>>>>> translate physical addresses higher than the first GB will result 
>>>>> in an
>>>>> overflow which dma_capable() can't detect as it only checks for
>>>>> addresses bigger then the maximum allowed DMA address.
>>>>>
>>>>> Fix this by verifying in dma_capable() if the DMA address range 
>>>>> provided
>>>>> is at any point lower than the minimum possible DMA address on the 
>>>>> bus.
>>>>>
>>>>> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
>>>>> ---
>>>>>   include/linux/dma-direct.h | 8 ++++++++
>>>>>   1 file changed, 8 insertions(+)
>>>>>
>>>>> diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h
>>>>> index adf993a3bd58..6ad9e9ea7564 100644
>>>>> --- a/include/linux/dma-direct.h
>>>>> +++ b/include/linux/dma-direct.h
>>>>> @@ -3,6 +3,7 @@
>>>>>   #define _LINUX_DMA_DIRECT_H 1
>>>>>     #include <linux/dma-mapping.h>
>>>>> +#include <linux/memblock.h> /* for min_low_pfn */
>>>>>   #include <linux/mem_encrypt.h>
>>>>>     #ifdef CONFIG_ARCH_HAS_PHYS_TO_DMA
>>>>> @@ -27,6 +28,13 @@ static inline bool dma_capable(struct device 
>>>>> *dev, dma_addr_t addr, size_t size)
>>>>>       if (!dev->dma_mask)
>>>>>           return false;
>>>>>   +#ifndef CONFIG_ARCH_DMA_ADDR_T_64BIT
>>>>> +    /* Check if DMA address overflowed */
>>>>> +    if (min(addr, addr + size - 1) <
>>>>> +        __phys_to_dma(dev, (phys_addr_t)(min_low_pfn << 
>>>>> PAGE_SHIFT)))
>>>>> +        return false;
>>>>> +#endif
>>>>> +
>>>>>       return addr + size - 1 <=
>>>>>           min_not_zero(*dev->dma_mask, dev->bus_dma_mask);
>>>>>   }
>>>> Hello Christoph,
>>>>
>>>> Thanks a lot for your patch! Unfortunately this patch doesn't solve 
>>>> the issue.
>>>>
>>>> Error messages:
>>>>
>>>> [    6.041163] bttv: driver version 0.9.19 loaded
>>>> [    6.041167] bttv: using 8 buffers with 2080k (520 pages) each 
>>>> for capture
>>>> [    6.041559] bttv: Bt8xx card found (0)
>>>> [    6.041609] bttv: 0: Bt878 (rev 17) at 1000:04:05.0, irq: 19, 
>>>> latency: 128, mmio: 0xc20001000
>>>> [    6.041622] bttv: 0: using: Typhoon TView RDS + FM Stereo / KNC1 
>>>> TV Station RDS [card=53,insmod option]
>>>> [    6.042216] bttv: 0: tuner type=5
>>>> [    6.111994] bttv: 0: audio absent, no audio device found!
>>>> [    6.176425] bttv: 0: Setting PLL: 28636363 => 35468950 (needs up 
>>>> to 100ms)
>>>> [    6.200005] bttv: PLL set ok
>>>> [    6.209351] bttv: 0: registered device video0
>>>> [    6.211576] bttv: 0: registered device vbi0
>>>> [    6.214897] bttv: 0: registered device radio0
>>>> [  114.218806] bttv 1000:04:05.0: overflow 0x00000000ff507000+4096 
>>>> of DMA mask ffffffff bus mask df000000
>>>> [  114.218848] Modules linked in: rfcomm bnep tuner_simple 
>>>> tuner_types tea5767 tuner tda7432 tvaudio msp3400 bttv tea575x 
>>>> tveeprom videobuf_dma_sg videobuf_core rc_core videodev mc btusb 
>>>> btrtl btbcm btintel bluetooth uio_pdrv_genirq uio ecdh_generic ecc
>>>> [  114.219012] [c0000001ecddf720] [80000000008ff6e8] 
>>>> .buffer_prepare+0x150/0x268 [bttv]
>>>> [  114.219029] [c0000001ecddf860] [80000000008fff6c] 
>>>> .bttv_qbuf+0x50/0x64 [bttv]
>>>>
>>>> -----
>>>>
>>>> Trace:
>>>>
>>>> [  462.783184] Call Trace:
>>>> [  462.783187] [c0000001c6c67420] [c0000000000b3358] 
>>>> .report_addr+0xb8/0xc0 (unreliable)
>>>> [  462.783192] [c0000001c6c67490] [c0000000000b351c] 
>>>> .dma_direct_map_page+0xf0/0x128
>>>> [  462.783195] [c0000001c6c67530] [c0000000000b35b0] 
>>>> .dma_direct_map_sg+0x5c/0xac
>>>> [  462.783205] [c0000001c6c675e0] [8000000000862e88] 
>>>> .__videobuf_iolock+0x660/0x6d8 [videobuf_dma_sg]
>>>> [  462.783220] [c0000001c6c676b0] [8000000000854274] 
>>>> .videobuf_iolock+0x98/0xb4 [videobuf_core]
>>>> [  462.783271] [c0000001c6c67720] [80000000008686e8] 
>>>> .buffer_prepare+0x150/0x268 [bttv]
>>>> [  462.783276] [c0000001c6c677c0] [8000000000854afc] 
>>>> .videobuf_qbuf+0x2b8/0x428 [videobuf_core]
>>>> [  462.783288] [c0000001c6c67860] [8000000000868f6c] 
>>>> .bttv_qbuf+0x50/0x64 [bttv]
>>>> [  462.783383] [c0000001c6c678e0] [80000000007bf208] 
>>>> .v4l_qbuf+0x54/0x60 [videodev]
>>>> [  462.783402] [c0000001c6c67970] [80000000007c1eac] 
>>>> .__video_do_ioctl+0x30c/0x3f8 [videodev]
>>>> [  462.783421] [c0000001c6c67a80] [80000000007c3c08] 
>>>> .video_usercopy+0x18c/0x3dc [videodev]
>>>> [  462.783440] [c0000001c6c67c00] [80000000007bb14c] 
>>>> .v4l2_ioctl+0x60/0x78 [videodev]
>>>> [  462.783460] [c0000001c6c67c90] [80000000007d3c48] 
>>>> .v4l2_compat_ioctl32+0x9b4/0x1850 [videodev]
>>>> [  462.783468] [c0000001c6c67d70] [c0000000001ad9cc] 
>>>> .__se_compat_sys_ioctl+0x284/0x127c
>>>> [  462.783473] [c0000001c6c67e20] [c00000000000067c] 
>>>> system_call+0x60/0x6c
>>>> [  462.783475] Instruction dump:
>>>> [  462.783477] 40fe0044 60000000 892255d0 2f890000 40fe0020 
>>>> 3c82ffc5 39200001 60000000
>>>> [  462.783483] 38842029 992255d0 485ad0d9 60000000 <0fe00000> 
>>>> 38210070 e8010010 7c0803a6
>>>> [  462.783490] ---[ end trace b677d4a00458e277 ]---
>>>>
>>>> -----
>>>>
>>>> dmesg fsl p5040: https://bugzilla.kernel.org/attachment.cgi?id=285813
>>>>
>>>> Kernel 5.4-rc6 config for the Cyrus+ board and for the QEMU ppce500 
>>>> board (CPU: P5040 and P5020): 
>>>> https://bugzilla.kernel.org/attachment.cgi?id=285815
>>>>
>>>> Bug report: https://bugzilla.kernel.org/show_bug.cgi?id=205201
>>>>
>>>> Thanks for your help,
>>>>
>>>> Christian
>>>
>>> Christoph,
>>>
>>> Do you have another patch for testing or shall I bisect?
>>>
>>> Thanks,
>>> Christian
>>
>> Hi Christoph,
>>
>> I have seen that I have activated the kernel config option 
>> CONFIG_ARCH_DMA_ADDR_T_64BIT. That means your code in your patch 
>> won't work if this kernel option is enabled.
>>
>> +#ifndef CONFIG_ARCH_DMA_ADDR_T_64BIT
>> +    /* Check if DMA address overflowed */
>> +    if (min(addr, addr + size - 1) <
>> +        __phys_to_dma(dev, (phys_addr_t)(min_low_pfn << PAGE_SHIFT)))
>> +        return false;
>> +#endif
>>
>> I will delete the lines with ifndef and endif and will try it again.
>>
>> Cheers,
>> Christian
>
> Christoph,
>
> I have seen that the patch above isn't from you. It's from Nicolas 
> Saenz Julienne.
>
> Cheers,
> Christian

Christoph,

Now, I can definitely say that this patch does not solve the issue.

Do you have another patch for testing or shall I bisect?

Thanks,
Christian

  reply index

Thread overview: 177+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-14  8:22 use generic DMA mapping code in powerpc V4 Christoph Hellwig
2018-11-14  8:22 ` [PATCH 01/34] powerpc: use mm zones more sensibly Christoph Hellwig
2018-12-06 14:09   ` Christoph Hellwig
2018-12-07 12:18     ` Michael Ellerman
2018-12-07 14:09       ` Christoph Hellwig
2018-12-07 15:04         ` Christian Zigotzky
2018-11-14  8:22 ` [PATCH 02/34] powerpc: allow NOT_COHERENT_CACHE for amigaone Christoph Hellwig
2018-12-06 14:09   ` Christoph Hellwig
2018-11-14  8:22 ` [PATCH 03/34] powerpc/dma: remove the unused ARCH_HAS_DMA_MMAP_COHERENT define Christoph Hellwig
2018-12-06 14:09   ` Christoph Hellwig
2018-11-14  8:22 ` [PATCH 04/34] powerpc/dma: remove the unused ISA_DMA_THRESHOLD export Christoph Hellwig
2018-12-06 14:10   ` Christoph Hellwig
2018-11-14  8:22 ` [PATCH 05/34] powerpc/dma: remove the unused dma_iommu_ops export Christoph Hellwig
2018-12-06 14:10   ` Christoph Hellwig
2018-11-14  8:22 ` [PATCH 06/34] powerpc/dma: split the two __dma_alloc_coherent implementations Christoph Hellwig
2018-12-06 14:10   ` Christoph Hellwig
2018-11-14  8:22 ` [PATCH 07/34] powerpc/dma: remove the no-op dma_nommu_unmap_{page, sg} routines Christoph Hellwig
2018-12-06 14:10   ` Christoph Hellwig
2018-11-14  8:22 ` [PATCH 08/34] powerpc/dma: untangle vio_dma_mapping_ops from dma_iommu_ops Christoph Hellwig
2018-12-06 14:10   ` Christoph Hellwig
2018-11-14  8:22 ` [PATCH 09/34] powerpc/dma: handle iommu bypass in dma_iommu_ops Christoph Hellwig
2018-11-14  8:22 ` [PATCH 10/34] powerpc/pseries: unwind dma_get_required_mask_pSeriesLP a bit Christoph Hellwig
2018-11-14  8:22 ` [PATCH 11/34] powerpc/pseries: use the generic iommu bypass code Christoph Hellwig
2018-11-14  8:22 ` [PATCH 12/34] powerpc/cell: move dma direct window setup out of dma_configure Christoph Hellwig
2018-12-09 10:23   ` Michael Ellerman
2018-12-12 14:36     ` Christoph Hellwig
2018-12-14 13:29       ` Michael Ellerman
2018-12-14 16:42         ` Christoph Hellwig
2018-11-14  8:22 ` [PATCH 13/34] powerpc/cell: use the generic iommu bypass code Christoph Hellwig
2018-11-14  8:22 ` [PATCH 14/34] powerpc/dart: remove dead cleanup code in iommu_init_early_dart Christoph Hellwig
2018-12-06 14:11   ` Christoph Hellwig
2018-11-14  8:22 ` [PATCH 15/34] powerpc/dart: use the generic iommu bypass code Christoph Hellwig
2018-11-14  8:22 ` [PATCH 16/34] powerpc/powernv: remove pnv_pci_ioda_pe_single_vendor Christoph Hellwig
2018-11-14  8:22 ` [PATCH 17/34] powerpc/powernv: remove pnv_npu_dma_set_mask Christoph Hellwig
2018-11-14  8:22 ` [PATCH 18/34] powerpc/powernv: use the generic iommu bypass code Christoph Hellwig
2018-11-14  8:22 ` [PATCH 19/34] cxl: drop the dma_set_mask callback from vphb Christoph Hellwig
2018-12-06 14:10   ` Christoph Hellwig
2018-11-14  8:23 ` [PATCH 20/34] powerpc/dma: stop overriding dma_get_required_mask Christoph Hellwig
2018-11-14  8:23 ` [PATCH 21/34] powerpc/pci: remove the dma_set_mask pci_controller ops methods Christoph Hellwig
2018-11-14  8:23 ` [PATCH 22/34] powerpc/dma: remove the iommu fallback for coherent allocations Christoph Hellwig
2018-11-14  8:23 ` [PATCH 23/34] powerpc/dma: remove get_pci_dma_ops Christoph Hellwig
2018-11-14  8:23 ` [PATCH 24/34] powerpc/dma: move pci_dma_dev_setup_swiotlb to fsl_pci.c Christoph Hellwig
2018-11-14  8:23 ` [PATCH 25/34] powerpc/dma: remove max_direct_dma_addr Christoph Hellwig
2018-11-14  8:23 ` [PATCH 26/34] powerpc/dma: fix an off-by-one in dma_capable Christoph Hellwig
2018-11-14  8:23 ` [PATCH 27/34] powerpc/fsl_pci: simplify fsl_pci_dma_set_mask Christoph Hellwig
2018-11-14  8:23 ` [PATCH 28/34] dma-mapping, powerpc: simplify the arch dma_set_mask override Christoph Hellwig
2018-11-14  8:23 ` [PATCH 29/34] powerpc/dma: use phys_to_dma instead of get_dma_offset Christoph Hellwig
2018-11-14  8:23 ` [PATCH 30/34] powerpc/dma: remove dma_nommu_mmap_coherent Christoph Hellwig
2018-11-14  8:23 ` [PATCH 31/34] powerpc/dma: use generic direct and swiotlb ops Christoph Hellwig
2018-11-14  8:23 ` [PATCH 32/34] powerpc/dma: remove get_dma_offset Christoph Hellwig
2018-11-14  8:23 ` [PATCH 33/34] powerpc/dma: remove set_dma_offset Christoph Hellwig
2018-11-14  8:23 ` [PATCH 34/34] powerpc/dma: trim the fat from <asm/dma-mapping.h> Christoph Hellwig
2018-11-27  7:42 ` use generic DMA mapping code in powerpc V4 Christoph Hellwig
2018-11-27 22:05   ` Benjamin Herrenschmidt
2018-11-28 11:05   ` Michael Ellerman
2018-11-28 15:55     ` Christian Zigotzky
2018-11-28 20:02       ` Christian Zigotzky
2018-11-28 20:35       ` Michal Suchánek
2018-11-29 17:03         ` Christoph Hellwig
2019-12-19 13:54       ` Christian Zigotzky
2018-11-29 12:05     ` Christian Zigotzky
2018-11-29 15:30       ` Christian Zigotzky
2018-11-29 17:03       ` Christoph Hellwig
2018-11-29 23:07         ` Christian Zigotzky
2018-11-30 10:53           ` Christoph Hellwig
2018-11-30 12:23             ` Christian Zigotzky
2018-11-30 13:10               ` Christoph Hellwig
2018-11-30 15:29                 ` Christian Zigotzky
2018-12-04  7:31                   ` Christian Zigotzky
2018-12-04  9:53                     ` Christian Zigotzky
2018-12-04 14:24                       ` Christoph Hellwig
2018-12-05  9:44                         ` Christian Zigotzky
2018-12-05 14:05                           ` Christoph Hellwig
2018-12-06 10:55                             ` Christian Zigotzky
2018-12-06 17:10                               ` Christian Zigotzky
2018-12-06 19:36                                 ` Christoph Hellwig
2018-12-07  7:48                                   ` Christian Zigotzky
2018-12-07 13:45                               ` Christian Zigotzky
2018-12-07 18:33                                 ` Christian Zigotzky
2018-12-08 10:29                                   ` Christian Zigotzky
2018-12-08 13:47                                     ` Christian Zigotzky
2018-12-09 14:20                                       ` Christian Zigotzky
2018-12-09 18:26                                         ` Christian Zigotzky
2018-12-10 15:54                                           ` Christian Zigotzky
2018-12-11 14:28                                             ` Christian Zigotzky
2018-12-11 18:17                                               ` Christian Zigotzky
2018-12-12  0:47                                                 ` Benjamin Herrenschmidt
2018-12-12  7:03                                                   ` Christian Zigotzky
2018-12-12 14:15                                                 ` Christoph Hellwig
2018-12-12 14:39                                                   ` Christian Zigotzky
2018-12-13  8:41                                                     ` Christian Zigotzky
2018-12-13  9:10                                                       ` Christoph Hellwig
2018-12-13  9:47                                                         ` Christian Zigotzky
2018-12-13 11:19                                                           ` Christian Zigotzky
2018-12-13 11:25                                                             ` Christoph Hellwig
2018-12-13 13:34                                                               ` Christian Zigotzky
2018-12-13 17:48                                                                 ` Christian Zigotzky
2018-12-13 21:53                                                                   ` Christian Zigotzky
2018-12-14 12:00                                                                     ` Christian Zigotzky
2018-12-14 16:45                                                                       ` Christoph Hellwig
2019-01-03  7:36                                                                       ` Christoph Hellwig
2019-01-03 19:26                                                                         ` Christian Zigotzky
2019-01-05 16:03                                                                           ` Christian Zigotzky
2019-01-09  9:31                                                                             ` Christian Zigotzky
2019-01-11  2:10                                                                               ` Christian Zigotzky
2019-01-12 18:14                                                                                 ` Christian Zigotzky
2019-01-15  8:07                                                                                   ` Christian Zigotzky
2019-01-15  8:49                                                                                     ` Christian Zigotzky
2019-01-15 10:55                                                                                       ` Christian Zigotzky
2019-01-15 13:35                                                                                         ` Christoph Hellwig
2019-01-15 13:56                                                                                           ` Christian Zigotzky
2019-01-15 15:17                                                                                             ` Christoph Hellwig
2019-01-17  9:21                                                                                               ` Christian Zigotzky
2019-01-17  9:31                                                                                                 ` Christoph Hellwig
2019-01-17  9:44                                                                                                   ` Christian Zigotzky
2019-01-18  8:35                                                                                                 ` Christoph Hellwig
2019-01-18 11:10                                                                                                   ` Christian Zigotzky
2019-01-18 11:28                                                                                                     ` Christoph Hellwig
2019-01-18 12:07                                                                                                       ` Christian Zigotzky
2019-01-18 12:18                                                                                                         ` Christoph Hellwig
2019-01-18 12:46                                                                                                           ` Christian Zigotzky
2019-01-18 12:55                                                                                                             ` Christoph Hellwig
2019-01-18 15:06                                                                                                               ` Christian Zigotzky
2019-01-19 11:40                                                                                                                 ` Christian Zigotzky
2019-01-19 11:52                                                                                                                   ` Christian Zigotzky
2019-01-19 13:02                                                                                                                     ` Christoph Hellwig
2019-01-19 14:04                                                                                                                       ` Christoph Hellwig
2019-01-21 14:38                                                                                                                         ` Christian Zigotzky
2019-01-23 14:34                                                                                                                           ` Christian Zigotzky
2019-01-25 13:37                                                                                                                             ` Christian Zigotzky
2019-01-27 13:13                                                                                                                               ` Christian Zigotzky
2019-01-28  7:04                                                                                                                                 ` Christoph Hellwig
2019-01-28 16:22                                                                                                                                   ` Christoph Hellwig
2019-01-28 16:52                                                                                                                                     ` Christian Zigotzky
2019-01-29 15:03                                                                                                                                       ` Christian Zigotzky
2019-01-29 16:14                                                                                                                                         ` Christoph Hellwig
2019-01-29 16:34                                                                                                                                           ` Christoph Hellwig
2019-01-30  4:40                                                                                                                                             ` Christian Zigotzky
2019-01-31 12:48                                                                                                                                               ` Christian Zigotzky
2019-02-01  8:04                                                                                                                                                 ` Christoph Hellwig
2019-02-01 16:54                                                                                                                                                   ` Christian Zigotzky
2019-02-03 16:49                                                                                                                                                     ` Christian Zigotzky
2019-02-04  7:56                                                                                                                                                       ` Christoph Hellwig
2019-02-04 12:13                                                                                                                                                         ` Christian Zigotzky
2019-02-04 12:38                                                                                                                                                           ` Christoph Hellwig
2019-02-06 13:45                                                                                                                                                             ` Christian Zigotzky
2019-02-06 15:15                                                                                                                                                               ` Christoph Hellwig
2019-02-06 15:16                                                                                                                                                                 ` Christoph Hellwig
2019-02-07  4:34                                                                                                                                                                   ` Christian Zigotzky
2019-02-08  9:01                                                                                                                                                                     ` Christian Zigotzky
2019-02-08  9:18                                                                                                                                                                       ` Christoph Hellwig
2019-02-08 10:59                                                                                                                                                                         ` Christian Zigotzky
2019-02-09 19:26                                                                                                                                                                         ` Darren Stevens
2019-02-09 21:10                                                                                                                                                                         ` Darren Stevens
2019-02-11  7:41                                                                                                                                                                           ` Christoph Hellwig
2019-02-10 12:00                                                                                                                                                                         ` Christian Zigotzky
     [not found]                                                                                                                                                                           ` <0042290A-2939-4EBA-A638-D404FA2055ED@xenosoft.de>
2019-02-11  7:21                                                                                                                                                                             ` Christian Zigotzky
2019-02-11  7:38                                                                                                                                                                           ` Christoph Hellwig
2019-02-12 12:42                                                                                                                                                                             ` Christian Zigotzky
2019-02-12 15:25                                                                                                                                                                               ` Christoph Hellwig
2019-02-12 19:31                                                                                                                                                                                 ` Christian Zigotzky
2019-02-12 19:50                                                                                                                                                                                   ` Christian Zigotzky
2019-02-12 19:52                                                                                                                                                                                     ` Christoph Hellwig
     [not found]                                                                               ` <46025f1b-db20-ac23-7dcd-10bc43bbb6ee@xenosoft.de>
     [not found]                                                                                 ` <20191105162856.GA15402@lst.de>
2019-11-07  9:53                                                                                   ` Bug 205201 - overflow of DMA mask and bus mask Christian Zigotzky
2019-11-10  7:27                                                                                     ` Christian Zigotzky
2019-11-11  8:12                                                                                       ` Christian Zigotzky
2019-11-11  8:16                                                                                         ` Christian Zigotzky
2019-11-11 12:22                                                                                           ` Christian Zigotzky [this message]
2019-11-12 14:41                                                                                             ` Christoph Hellwig
2019-11-12 22:58                                                                                               ` Christian Zigotzky
2019-11-13 10:14                                                                                               ` Christian Zigotzky
2019-11-13 11:02                                                                                                 ` Christoph Hellwig
2018-11-29 17:02     ` use generic DMA mapping code in powerpc V4 Christoph Hellwig
2018-12-08 17:03 ` Christoph Hellwig
2018-12-16 16:51 ` Christoph Hellwig
2018-12-17  1:14   ` Michael Ellerman
     [not found] <7b549219-a2e1-08c7-331b-9c3e4fdb8a8f@xenosoft.de>
     [not found] ` <3aeae0d8-e9be-2585-cbbd-70263cb495f1@xenosoft.de>
     [not found]   ` <20191015125105.GU25745@shell.armlinux.org.uk>
     [not found]     ` <5611f3bc-68aa-78ec-182a-1cb414202314@xenosoft.de>
     [not found]       ` <20191015131750.GV25745@shell.armlinux.org.uk>
2019-10-23  5:42         ` Onboard SD card doesn't work anymore after the 'mmc-v5.4-2' updates Michael Ellerman
2019-10-23 14:20           ` Christian Zigotzky
2019-11-04 14:44             ` Christian Zigotzky
2019-11-05  7:50               ` Bug 205201 - overflow of DMA mask and bus mask Christian Zigotzky

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