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[Qemu-discuss] use DMA engines in the virtual machine

From: Zheng Da
Subject: [Qemu-discuss] use DMA engines in the virtual machine
Date: Sat, 17 Aug 2013 17:11:54 -0400


I try to develop a kernel module of using the DMA engine in the Intel
processors. I have enabled kvm. When I boot the virtual machine, I
found the DMA engine isn't enabled. I tried different CPU models, and
it seems none of them has the DMA engine.

The native processor is Xeon E5-462 and it has DMA engines. Is there
anyway to enable the feature in the virtual machine as well? Or the
virtual machine can only expose very standard functionality?


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