From: john@csplan9.rit.edu
To: 9fans@cse.psu.edu
Subject: [9fans] dmamode
Date: Thu, 10 Jan 2008 13:14:28 -0500 [thread overview]
Message-ID: <034d35f287a01159e0c1e539484e3b8f@csplan9.rit.edu> (raw)
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
next reply other threads:[~2008-01-10 18:14 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-10 18:14 john [this message]
2008-01-10 18:16 ` andrey mirtchovski
2008-01-10 18:21 ` ron minnich
2008-01-10 18:24 ` erik quanstrom
2008-01-10 18:26 ` Felipe Bichued
2008-01-10 18:28 ` john
2008-01-10 18:32 ` andrey mirtchovski
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