Re: [PATCH 1/4] x86, gart: Don't enforce GART aperture lower-boundby alignment

[H. Peter Anvin]

On 04/18/2011 06:45 AM, Joerg Roedel wrote:
> This patch changes the allocation of the GART aperture to
> enforce only natural alignment instead of aligning it on
> 512MB. This big alignment was used to force the GART
> aperture to be over 512MB. This is enforced by using 512MB
> as the lower-bound address in the allocation range.
> 
> Cc: Yinghai Lu <yinghai@xxxxxxxxxx>
> Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx>

Better implementation of the existing bounds, yes, but I think the
algorithm is still wrong.  Specifically, 512 MiB seems to have been the
maximum address of the kernel at some point, but that is historic at
this point, at least on 64 bits.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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