lkml.org 
[lkml]   [2007]   [Jun]   [23]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateSat, 23 Jun 2007 15:22:04 +0900
FromTejun Heo <>
SubjectRe: SATA RAID5 speed drop of 100 MB/s
Carlo Wood wrote:
> For what it's worth... I tried applying
> 
> --- a/drivers/ata/ahci.c
> +++ b/drivers/ata/ahci.c
> @@ -516,6 +516,8 @@ static void ahci_save_initial_config(struct pci_dev *pdev,
>          * reset.  Values without are used for driver operation.
>          */
>         hpriv->saved_cap = cap = readl(mmio + HOST_CAP);
> +       hpriv->saved_cap &= ( (1<<28) | (1<<17) );
> +       hpriv->saved_cap |= (1 << 27);
>         hpriv->saved_port_map = port_map = readl(mmio + HOST_PORTS_IMPL);

Hmmm... That's super-odd.  You win my oddest-of-the-month award.  :-)

I'll think about it a bit.  Please stand by.

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

\
 
 \ /
  Last update: 2007-06-23 06:25    [from the cache]
©2003-2008