Messages in this thread Patch in this message | | | Date | Wed, 10 Feb 2016 11:02:12 +0000 | From | Catalin Marinas <> | Subject | Re: [PATCHv4 2/3] arm64: Add support for ARCH_SUPPORTS_DEBUG_PAGEALLOC |
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On Wed, Feb 10, 2016 at 10:38:14AM +0000, Catalin Marinas wrote: > On Fri, Feb 05, 2016 at 04:24:47PM -0800, Laura Abbott wrote: > > --- a/arch/arm64/mm/mmu.c > > +++ b/arch/arm64/mm/mmu.c > > @@ -149,6 +149,19 @@ static void split_pud(pud_t *old_pud, pmd_t *pmd) > > } while (pmd++, i++, i < PTRS_PER_PMD); > > } > > > > +bool block_mappings_allowed(phys_addr_t (*pgtable_alloc)(void)) > > +{ > > + > > + /* > > + * If debug_page_alloc is enabled we must map the linear map > > + * using pages. However, other mappings created by > > + * create_mapping_noalloc must use sections in some cases. Allow > > + * sections to be used in those cases, where no pgtable_alloc > > + * function is provided. > > + */ > > + return !pgtable_alloc || !debug_pagealloc_enabled(); > > +} > > This breaks the build when CONFIG_DEBUG_PAGEALLOC is not enabled > (defconfig) since debug_pagealloc_enabled() is not defined. A fix went > in next/master as commit 0987684b855c > ("mm-slab-clean-up-debug_pagealloc-processing-code-fix"). I need to > track it down and merge it via the arm64 tree, otherwise I'll add some > #ifdefs in this function.
It seems that there are other patches in the mm tree requiring this change. I'll fix it locally (#ifdefs) and revert the change after -rc1.
-- Catalin
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