From ebe40c5c4c888f2cbfd9f0880a8bc072e6fc3a0d Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 24 Sep 2008 04:29:08 +0000 Subject: [PATCH] powerpc: Enforce sane MAX_ORDER powerpc uses CONFIG_FORCE_MAX_ZONEORDER, and some things depend on it being at least 10 when 64k pages are not configured (notably the dart iommu code with CONFIG_PM). The defaults are fine, but when going from a 64K pages config to one without 64K pages, MAX_ORDER stays at 9 which is too low for 4K pages. This patch makes the Kconfig enforce at least the defaults. Signed-off-by: Johannes Berg Acked-by: Timur Tabi Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/Kconfig | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 17c988b678d1..c171f5bcf258 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -415,8 +415,11 @@ config PPC_64K_PAGES config FORCE_MAX_ZONEORDER int "Maximum zone order" + range 9 64 if PPC_64K_PAGES default "9" if PPC_64K_PAGES + range 13 64 if PPC64 && !PPC_64K_PAGES default "13" if PPC64 && !PPC_64K_PAGES + range 11 64 default "11" help The kernel memory allocator divides physically contiguous memory -- 2.20.1