On 16.06.2013 13:35, Jussi Kivilinna wrote:
On 16.06.2013 11:21, Oliver Neukum wrote:
On Saturday 15 June 2013 16:22:30 Jussi Kivilinna wrote:
Hm.. rethink this a bit.
Transfer buffer might be dma aligned but shorter than cacheline and end of
cacheline
used as something else. Manual
On Friday 28 June 2013 15:39:27 Jussi Kivilinna wrote:
On 16.06.2013 13:35, Jussi Kivilinna wrote:
On 16.06.2013 11:21, Oliver Neukum wrote:
On Saturday 15 June 2013 16:22:30 Jussi Kivilinna wrote:
Hm.. rethink this a bit.
Transfer buffer might be dma aligned but shorter than
On Saturday 15 June 2013 16:22:30 Jussi Kivilinna wrote:
Hm.. rethink this a bit.
Transfer buffer might be dma aligned but shorter than cacheline and end of
cacheline
used as something else. Manual alignment by host driver does not catch that
or fix that.
So, yes.. dma mapping should
On 15.06.2013 16:47, Ming Lei wrote:
On Sat, Jun 15, 2013 at 9:10 PM, Jussi Kivilinna jussi.kivili...@iki.fi
wrote:
On 15.06.2013 15:07, Ming Lei wrote:
On Sat, Jun 15, 2013 at 6:19 PM, Jussi Kivilinna jussi.kivili...@iki.fi
wrote:
On 15.06.2013 10:41, Ming Lei wrote:
Cc: netdev
On Fri,
Cc: netdev
On Fri, Jun 14, 2013 at 9:38 PM, Jussi Kivilinna jussi.kivili...@iki.fi wrote:
Appearently some out-of-tree USB host drivers do not handle DMA alignment for
Looks these host drivers have to face the fact that the transfer buffer is often
DMA non-aligned from network device drivers(in
On 14.06.2013 23:20, Alan Stern wrote:
On Fri, 14 Jun 2013, Jussi Kivilinna wrote:
Appearently some out-of-tree USB host drivers do not handle DMA alignment for
URB buffers and let core/hcd.c to do the mapping on architectures that have
minimum DMA alignment requirements. This leads to
On 15.06.2013 10:41, Ming Lei wrote:
Cc: netdev
On Fri, Jun 14, 2013 at 9:38 PM, Jussi Kivilinna jussi.kivili...@iki.fi
wrote:
Appearently some out-of-tree USB host drivers do not handle DMA alignment for
Looks these host drivers have to face the fact that the transfer buffer is
often
On Sat, Jun 15, 2013 at 6:19 PM, Jussi Kivilinna jussi.kivili...@iki.fi wrote:
On 15.06.2013 10:41, Ming Lei wrote:
Cc: netdev
On Fri, Jun 14, 2013 at 9:38 PM, Jussi Kivilinna jussi.kivili...@iki.fi
wrote:
Appearently some out-of-tree USB host drivers do not handle DMA alignment
for
On 15.06.2013 15:07, Ming Lei wrote:
On Sat, Jun 15, 2013 at 6:19 PM, Jussi Kivilinna jussi.kivili...@iki.fi
wrote:
On 15.06.2013 10:41, Ming Lei wrote:
Cc: netdev
On Fri, Jun 14, 2013 at 9:38 PM, Jussi Kivilinna jussi.kivili...@iki.fi
wrote:
Appearently some out-of-tree USB host drivers
On 15.06.2013 16:10, Jussi Kivilinna wrote:
[...]
Instead of fixing host drivers, users end up posting bug reports against
those USB device drivers that use unaligned buffers for URB; such as with
rtl8192cu
(http://thread.gmane.org/gmane.linux.kernel.wireless.general/105631).
Not only
On Sat, Jun 15, 2013 at 9:10 PM, Jussi Kivilinna jussi.kivili...@iki.fi wrote:
On 15.06.2013 15:07, Ming Lei wrote:
On Sat, Jun 15, 2013 at 6:19 PM, Jussi Kivilinna jussi.kivili...@iki.fi
wrote:
On 15.06.2013 10:41, Ming Lei wrote:
Cc: netdev
On Fri, Jun 14, 2013 at 9:38 PM, Jussi
Appearently some out-of-tree USB host drivers do not handle DMA alignment for
URB buffers and let core/hcd.c to do the mapping on architectures that have
minimum DMA alignment requirements. This leads to random memory corruptions
and crashes when using USB device drivers that use unaligned URB
On Fri, Jun 14, 2013 at 04:38:03PM +0300, Jussi Kivilinna wrote:
Appearently some out-of-tree USB host drivers do not handle DMA alignment for
URB buffers and let core/hcd.c to do the mapping on architectures that have
minimum DMA alignment requirements. This leads to random memory corruptions
On Fri, Jun 14, 2013 at 08:24:24PM +0300, Jussi Kivilinna wrote:
On 14.06.2013 19:05, Greg Kroah-Hartman wrote:
On Fri, Jun 14, 2013 at 04:38:03PM +0300, Jussi Kivilinna wrote:
Appearently some out-of-tree USB host drivers do not handle DMA alignment
for
URB buffers and let core/hcd.c to
On Fri, 14 Jun 2013, Jussi Kivilinna wrote:
Appearently some out-of-tree USB host drivers do not handle DMA alignment for
URB buffers and let core/hcd.c to do the mapping on architectures that have
minimum DMA alignment requirements. This leads to random memory corruptions
and crashes when
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