Re: [PATCH RFC] ahci: fix SB600 h/w errata issue

[Jeff Garzik]

Jeff Garzik wrote:
> I haven't seen anyone work on the recent SB600 errata, where the
> hardware does not like 256-length PRD entries.
>
> Is this correct, AMD folks?
>
> It hurts performance on SB600, but it is more important to get a
> correct patch eliminating the data corruption/lockups, and then later
> on tune for performance.
>
> We simply limit each command to a maximum of 255 sectors, on SB600.
>
> Signed-off-by: Jeff Garzik <jgarzik@xxxxxxxxxx>
> ---
>  drivers/ata/ahci.c |   14 +++++++++++++-
>  1 file changed, 13 insertions(+), 1 deletion(-)

Based on Henry's response, I'm going to assume AMD approves of this patch...


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