On Fri, 7 Oct 2011 18:27:06 +0200 Arnd Bergmann <arnd@xxxxxxxx> wrote: > On Thursday 06 October 2011, Marek Szyprowski wrote: > > Once again I decided to post an updated version of the Contiguous Memory > > Allocator patches. > > > > This version provides mainly a bugfix for a very rare issue that might > > have changed migration type of the CMA page blocks resulting in dropping > > CMA features from the affected page block and causing memory allocation > > to fail. Also the issue reported by Dave Hansen has been fixed. > > > > This version also introduces basic support for x86 architecture, what > > allows wide testing on KVM/QEMU emulators and all common x86 boxes. I > > hope this will result in wider testing, comments and easier merging to > > mainline. > > Hi Marek, > > I think we need to finally get this into linux-next now, to get some > broader testing. Having the x86 patch definitely helps here becauses > it potentially exposes the code to many more testers. > > IMHO it would be good to merge the entire series into 3.2, since > the ARM portion fixes an important bug (double mapping of memory > ranges with conflicting attributes) that we've lived with for far > too long, but it really depends on how everyone sees the risk > for regressions here. If something breaks in unfixable ways before > the 3.2 release, we can always revert the patches and have another > try later. > > It's also not clear how we should merge it. Ideally the first bunch > would go through linux-mm, and the architecture specific patches > through the respective architecture trees, but there is an obvious > inderdependency between these sets. > > Russell, Andrew, are you both comfortable with putting the entire > set into linux-mm to solve this? Do you see this as 3.2 or rather > as 3.3 material? > Russell's going to hate me, but... I do know that he had substantial objections to at least earlier versions of this, and he is a guy who knows of what he speaks. So I would want to get a nod from rmk on this work before proceeding. If that nod isn't available then let's please identify the issues and see what we can do about them. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>