Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> writes: > On Sat, Jun 14, 2014 at 12:55:39PM +0530, Aneesh Kumar K.V wrote: >> Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> writes: >> >> > Currently, there are two users on CMA functionality, one is the DMA >> > subsystem and the other is the kvm on powerpc. They have their own code >> > to manage CMA reserved area even if they looks really similar. >> > From my guess, it is caused by some needs on bitmap management. Kvm side >> > wants to maintain bitmap not for 1 page, but for more size. Eventually it >> > use bitmap where one bit represents 64 pages. >> > >> > When I implement CMA related patches, I should change those two places >> > to apply my change and it seem to be painful to me. I want to change >> > this situation and reduce future code management overhead through >> > this patch. >> > >> > This change could also help developer who want to use CMA in their >> > new feature development, since they can use CMA easily without >> > copying & pasting this reserved area management code. >> > >> > v2: >> > Although this patchset looks very different with v1, the end result, >> > that is, mm/cma.c is same with v1's one. So I carry Ack to patch 6-7. >> > >> > Patch 1-5 prepare some features to cover ppc kvm's requirements. >> > Patch 6-7 generalize CMA reserved area management code and change users >> > to use it. >> > Patch 8-10 clean-up minor things. >> >> >> I wanted to test the ppc changes and found that the patch series doesn't apply >> against v3.15 . Do you have a kernel tree which I can clone to test this >> series ? > > This is based on linux-next -next-20140610. > And my tree is on following link. > > https://github.com/JoonsooKim/linux/tree/cma-general-v2.0-next-20140610 > > But, I think I'm late, because you have already added a Tested-by tag. linux-next kexec is broken on ppc64, hence I hand picked few of dependent patches for dma CMA on top of 3.15 and used that for testing. -aneesh -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>