Re: Using netconsole for debugging suspend/resume

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


From: Andi Kleen <[email protected]>
Date: Tue, 13 Jun 2006 06:54:14 +0200

> I guess if you use 1394 with remote DMA for other protocols (like
> video etc.) there must be some way for the subsystem to map
> the memory even on IOMMU systems. I admit I haven't dived that
> deeply into the 1394 subsystem so I don't know how that works.

Video-1394 has it's own driver, which does a consistent DMA
allocation, and then maps that into userspace using remap_pfn_range().
Entirely portable.

Strangely I don't even see any bus_to_virt() etc. calls in
the raw1394 driver, just these ptr2int() things...

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at
Please read the FAQ at

[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]
  Powered by Linux