On Fri, Dec 05, 2014 at 05:27:02PM +0000, Russell King - ARM Linux wrote: > On Fri, Dec 05, 2014 at 05:07:45PM +0000, Catalin Marinas wrote: > > From 8e317c6be00abe280de4dcdd598d2e92009174b6 Mon Sep 17 00:00:00 2001 > > From: Catalin Marinas <catalin.marinas@xxxxxxx> > > Date: Fri, 5 Dec 2014 16:41:52 +0000 > > Subject: [PATCH] Revert "ARM: 8167/1: extend the reserved memory for initrd to > > be page aligned" > > > > This reverts commit 421520ba98290a73b35b7644e877a48f18e06004. There is > > no guarantee that the boot-loader places other images like dtb in a > > different page than initrd start/end. When this happens, such pages must > > not be freed. The free_reserved_area() already takes care of rounding up > > "start" and rounding down "end" to avoid freeing partially used pages. > > > > In addition to the revert, this patch also removes the arm32 > > PAGE_ALIGN(end) when calculating the size of the memory to be poisoned. > > which makes the summary line rather misleading, and I really don't think > we need to do this on ARM for the simple reason that we've been doing it > for soo long that it can't be an issue. I started this as a revert and then realised that it doesn't solve anything for arm32 without changing the poisoning. Anyway, if you are happy with how it is, I'll drop the arm32 part. As I said yesterday, the issue is worse for arm64 with 64K pages. -- Catalin -- 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>