On Wed, 2005-04-06 at 15:26, Catalin Marinas wrote:
> Bas Vermeulen <[email protected]> wrote:
> > I am currently working on the bfinnommu linux port for the BlackFin 533.
> > I need to grab the top 1 MB of memory so I can give it out to drivers
> > that need non-cached memory for DMA operations.
>
> I did this long time ago (on a 2.4 kernel), trying to avoid a hardware
> problem. I re-ordered the zones so that ZONE_DMA came after
> ZONE_NORMAL. Since the DMA memory was quite small (less than 1MB), I
> also put a "break" before "case ZONE_DMA" in the
> build_zonelists_node() functions to avoid the allocation fallback.
This will put me in the zone of 'it ain't ever going to be integrated'.
I'd preferrably find a solution without changing the zones. My ideal
solution would be grabbing pages before they are assigned to a zone, or
at least for the zone to recognize them as used.
Bas Vermeulen
-
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]
