Re: BUG: SCSI aic7xxx driver and AMD IOMMU

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 03/23/2015 11:03 AM, Joerg Roedel wrote:
Hi Mark,

On Tue, Mar 03, 2015 at 02:36:19PM -0500, Mark Hounschell wrote:
It looks like this problem is NOT a bug with the SCSI aic7xxx driver
after all. I can duplicate this BUG very easily with other hardware.
Simply removing a driver module  (whether it its self, has actually
used any of the DMA API or not) that is sitting on the same pci bus
as a card that is actually using DMA will cause this. And that card
that is in use and using DMA will no longer function. It "looks and
feels" like unloading a module causes the IOMMU to improperly unmap
valid mappings.

You are right, I looked into the code and found the problem. I'll post a
fix for testing this week.


I'll be happy to test it.

Regards
Mark

--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [SCSI Target Devel]     [Linux SCSI Target Infrastructure]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Linux IIO]     [Samba]     [Device Mapper]
  Powered by Linux