On Wed, Jul 09, 2008 at 02:59:02PM +0800, lianwei Wang wrote: > I find from the UML website that the UML can access the host PCI device > accessing with VPCI patch, but it seem that that VPCI patch is too old. Do > you know that latest information about the VPCI patch? Is it stable? And > where could I find the patch? The VPCI patch is old. Attached is the latest tarball that I can find. > >From the below mail you say that you are trying to emulate the DMA using > iomem. How about the latest information of it? And does it worked or not? iomem works fine - it just depends on whether it's what you want. If you want actual DMA from a physical device, it's not. If you want to emulate an iomapped device, then it is. Jeff -- Work email - jdike at linux dot intel dot com