Re: SCSI breakage on non-cache coherent architectures

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From: David Miller
Date: Monday, November 19, 2007 - 5:57 pm

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Tue, 20 Nov 2007 11:55:01 +1100


Good question.

Some drivers are problematic (or were) because they put
DMA descriptor chaining information at the head of the
buffer, but those have been fixed either to use alternate
descriptor ring facilities or make the proper DMA sync
calls.
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Messages in current thread:
Re: SCSI breakage on non-cache coherent architectures, David Miller, (Mon Nov 19, 1:38 am)
Re: SCSI breakage on non-cache coherent architectures, Matthew Wilcox, (Mon Nov 19, 5:32 am)
Re: SCSI breakage on non-cache coherent architectures, James Bottomley, (Mon Nov 19, 8:09 am)
Re: SCSI breakage on non-cache coherent architectures, Benjamin Herrenschmidt, (Mon Nov 19, 12:51 pm)
Re: SCSI breakage on non-cache coherent architectures, Benjamin Herrenschmidt, (Mon Nov 19, 12:53 pm)
Re: SCSI breakage on non-cache coherent architectures, Benjamin Herrenschmidt, (Mon Nov 19, 12:54 pm)
Re: SCSI breakage on non-cache coherent architectures, Benjamin Herrenschmidt, (Mon Nov 19, 12:55 pm)
Re: SCSI breakage on non-cache coherent architectures, Benjamin Herrenschmidt, (Mon Nov 19, 2:55 pm)
Re: SCSI breakage on non-cache coherent architectures, Benjamin Herrenschmidt, (Mon Nov 19, 5:34 pm)
Re: SCSI breakage on non-cache coherent architectures, Benjamin Herrenschmidt, (Mon Nov 19, 5:55 pm)
Re: SCSI breakage on non-cache coherent architectures, David Miller, (Mon Nov 19, 5:57 pm)
Re: SCSI breakage on non-cache coherent architectures, Roland Dreier, (Mon Nov 19, 7:10 pm)
Re: SCSI breakage on non-cache coherent architectures, Benjamin Herrenschmidt, (Mon Nov 19, 7:35 pm)
Re: SCSI breakage on non-cache coherent architectures, Benjamin Herrenschmidt, (Mon Nov 19, 8:14 pm)
Re: SCSI breakage on non-cache coherent architectures, Thomas Bogendoerfer, (Tue Nov 20, 1:29 am)
Re: SCSI breakage on non-cache coherent architectures, James Bottomley, (Tue Nov 20, 7:36 am)
Re: SCSI breakage on non-cache coherent architectures, James Bottomley, (Tue Nov 20, 12:35 pm)
Re: SCSI breakage on non-cache coherent architectures, Roland Dreier, (Tue Nov 20, 1:05 pm)
Re: SCSI breakage on non-cache coherent architectures, James Bottomley, (Tue Nov 20, 2:10 pm)
Re: SCSI breakage on non-cache coherent architectures, Benjamin Herrenschmidt, (Tue Nov 20, 3:39 pm)
Re: SCSI breakage on non-cache coherent architectures, James Bottomley, (Tue Nov 20, 4:09 pm)