Re: [PATCH 0/4] Use of new scsi_allocate_command

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On Thu, 2008-05-01 at 18:36 +0300, Boaz Harrosh wrote:
> On Thu, May 01 2008 at 18:22 +0300, James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote:
> > On Thu, 2008-05-01 at 17:56 +0300, Boaz Harrosh wrote:
> >> The call to pci_map_page() on an ISA case will it not bounce the
> >> buffer?
> > 
> > Only if the system isn't a PCI_DMA_BUS_IS_PHYS one.
> > 
> > That means basically either has an iommu/gart or has some silly swiotlb
> > to emulate one.
> > 
> > That means for standard x86 isa systems the answer is no: the buffer has
> > to be allocated within the isa region because pci_map is simply a
> > virt_to_phys.
> > 
> > James
> > 
> OK Thanks, so the second patch then. That will solve it.

Um, your second patch is only changing isd200; it's hard to see how that
can fix a gdth problem ...

James


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