On Fri, Jun 01, 2007 at 03:38:57PM -0400, Rik van Riel wrote:
> Andi Kleen wrote:
>
> >An pci_map_sg failing typically leads to an IO error and we've
> >always printk'ed those. Otherwise people will wonder why they
> >get EIO.
>
> In some situations. In this case the qla2xxx driver uses
> the pci_map_sg() failure as a throttling mechanism and
First WTF does it need swiotlb anyways? QA hardware should
be definitely DAC capable, shouldn't it?
> printing out all the warnings will actually slow down the
> system.
Another reason is that there is a lot of code that
still doesn't check the return values and when that
happens you might get data corruption too.
>
> Andi, what do you propose as a solution?
A different interface; like I wrote in my earlier mail.
Another probabibility would be to have a blocking interface
to swiotlb that won't fail. That would be the better solution
long term, but i was told it is hard to fit into some current
driver interfaces.
-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
