lkml.org 
[lkml]   [2004]   [Sep]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [patch] voluntary-preempt-2.6.9-rc1-bk4-R1
From
Date
On Mer, 2004-09-08 at 21:33, Mark_H_Johnson@raytheon.com wrote:
> >.... Please disable IDE DMA and see
> >what happens (after hiding the PIO IDE codepath via
> >touch_preempt_timing()).
>
> Not quite sure where to add touch_preempt_timing() calls - somewhere in the
> loop in ide_outsl and ide_insl? [so we keep resetting the start /end
> times?]

If you haven't done hdparm -u1 that may be a reason you want to touch
these. To defend against some very bad old h/w where a stall in the I/O
stream to the disk causes corruption we disable IRQ's across the
transfer in PIO mode by default.

-
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: 2005-03-22 14:06    [W:0.075 / U:0.460 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site