Joerg Roedel wrote: > On Fri, Jul 02, 2010 at 12:33:51AM -0700, Zach Pfeffer wrote: >> Daniel Walker wrote: > >>> So if we include this code which "map implementations" could you >>> collapse into this implementations ? Generally , what currently existing >>> code can VCMM help to eliminate? >> In theory, it can eliminate all code the interoperates between IOMMU, >> CPU and non-IOMMU based devices and all the mapping code, alignment, >> mapping attribute and special block size support that's been >> implemented. > > Thats a very abstract statement. Can you point to particular code files > and give a rough sketch how it could be improved using VCMM? I can. Not to single out a particular subsystem, but the video4linux code contains interoperation code to abstract the difference between sg buffers, vmalloc buffers and physically contiguous buffers. The VCMM is an attempt to provide a framework where these and all the other buffer types can be unified. -- Sent by an employee of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>