On 01/26/2016 10:05 PM, Yang Zhang wrote: > On 2016/1/26 15:41, Jike Song wrote: > >> We will need to extend: >> >> - VFIO_DEVICE_GET_REGION_INFO >> >> >> a) adding a flag: DONT_MAP. For example, the MMIO of vgpu >> should be trapped instead of being mmap-ed. > > I may not in the context, but i am curious how to handle the DONT_MAP in > vfio driver? Since there are no real MMIO maps into the region and i > suppose the access to the region should be handled by vgpu in i915 > driver, but currently most of the mmio accesses are handled by Qemu. > Hi Yang, MMIO accesses are supposed to be handled in kernel, without vm-exiting to QEMU, similar to in-kernel irqchip :) -- Thanks, Jike -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
