From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <034d35f287a01159e0c1e539484e3b8f@csplan9.rit.edu>
To: 9fans@cse.psu.edu
Date: Thu, 10 Jan 2008 13:14:28 -0500
From: john@csplan9.rit.edu
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Subject: [9fans] dmamode
Topicbox-Message-UUID: 2a6d9ed4-ead3-11e9-9d60-3106f5b1d025

Venti dumps were taking forever, so we investigated... turns out
DMA was turned off. I know I said "use DMA" when I installed, and
plan9.ini contains dmamode=ask, but DMA is not enabled at boot
and I am not asked if I want to use DMA. Additionally, the dmamode=
option is not documented in plan9.ini(8); I'm looking at the source right
now but so far I've been unable to find where the value is read.
I thought options given at installation were used in the system after
installing? I know that's the case for mouseport and vgasize, but not
for DMA? Why isn't dmamode= documented in plan9.ini(8)? Do you
turn on DMA in plan9.ini or by just putting an echo command in
cpurc?

John