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Re: [Qemu-devel] enabling bus-master IDE driver
From: |
zitu |
Subject: |
Re: [Qemu-devel] enabling bus-master IDE driver |
Date: |
Fri, 5 Nov 2004 14:32:00 +0100 |
User-agent: |
Internet Messaging Program (IMP) 3.2.5 |
Quoting Simon Frew <address@hidden>:
> Running qemu with 512mb ram. Seems to work fine, but guest o/s installation
> was very slow. So after reading through previous posts on here I found the
> patch posted previously to enable dma for ide, and have applied that to
> ide.c
> and rebuilt qemu. Then in windows go to device manager and see what it
> thinks
> is installed. Device manager says I have a Intel 82371SB PCI Bus Master IDE
> controller. So I right-click on "Primary IDE channel" and look in
> properties->advanced settings. Transfer Mode is set to "DMA if available"
> and current transfer mode says "PIO mode". So it still seems to be in PIO
> mode!
I have the same problem inside XP guest too. Linux guest seems really in
DMA mode, since my transfer rates go from 17MB to 47MB on a 512MB hdd image.
>
> Does that mean that the patch doesn't work? Do I have to do something else
> to make dma work?
I think this patch is almost complete for linux and solaris guests. Some
more work/init is needed inside XP/NT/2K. Anyone around with this
knowledge ?
Zitu
--
- [Qemu-devel] enabling bus-master IDE driver, Simon Frew, 2004/11/04
- Re: [Qemu-devel] enabling bus-master IDE driver,
zitu <=
- Re: [Qemu-devel] enabling bus-master IDE driver, zitu, 2004/11/05
- Re: [Qemu-devel] enabling bus-master IDE driver, Jason Brittain, 2004/11/05
- Re: [Qemu-devel] enabling bus-master IDE driver, Johannes Schindelin, 2004/11/06
- Re: [Qemu-devel] enabling bus-master IDE driver, James Boddington, 2004/11/06
- Re: [Qemu-devel] enabling bus-master IDE driver, James Boddington, 2004/11/06
- Re: [Qemu-devel] enabling bus-master IDE driver, zitu, 2004/11/06
- Re: [Qemu-devel] enabling bus-master IDE driver, jeebs, 2004/11/06
- Re: [Qemu-devel] enabling bus-master IDE driver, Jason Brittain, 2004/11/07
- Re: [Qemu-devel] enabling bus-master IDE driver, Jason Brittain, 2004/11/06
- Re: [Qemu-devel] enabling bus-master IDE driver, Jens Axboe, 2004/11/07