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From: | Jan Marten Simons |
Subject: | Re: [Qemu-devel] DMA in Windows 2000/XP/2003 |
Date: | Wed, 24 Aug 2005 14:56:26 +0200 |
User-agent: | Mozilla Thunderbird 1.0.6 (X11/20050726) |
Víctor Córcoles López wrote:
I don't think you'd get any advantage of activating DMA inside the qemu guest-OS, as qemu has to proxy all rw-access into a file anyway, unless you pass an actual device/partition to qemu. Besides qemu is emulating the complete pci bus, which cannot use features of actual hardware in the machine (e.g. your hdd or features your chipset provide). I guess it would be possible to emulate uDMA inside the vm, too, but it's likely to even slowdown the emulation.Hello developers. My English is not good.I see that DMA in Hard Disks in guest OS Windows 2000/XP/2003 is not avalaible, it run in PIO mode.How can activate UDMA mode for hard disk ?
So long, Jan
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