Re: [PATCH 03/13] mm: Add generic p?d_large() macros
From: Steven Price <steven.price@arm.com>
Date: 2019-02-18 14:19:38
Also in:
linux-mm, lkml
On 18/02/2019 11:31, Peter Zijlstra wrote:
On Fri, Feb 15, 2019 at 05:02:24PM +0000, Steven Price wrote:quoted
From: James Morse <james.morse@arm.com> Exposing the pud/pgd levels of the page tables to walk_page_range() means we may come across the exotic large mappings that come with large areas of contiguous memory (such as the kernel's linear map). For architectures that don't provide p?d_large() macros, provided a does nothing default.Kan was going to fix that for all archs I think..
The latest series I can find from Kan is still x86 specific. I'm happy to rebase onto something else if Kan has an implementation already (please point me in the right direction). Otherwise Kan is obviously free to base on these changes. Steve
See: http://lkml.kernel.org/r/20190204105409.GA17550@hirez.programming.kicks-ass.netquoted
Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Steven Price <steven.price@arm.com> --- include/asm-generic/pgtable.h | 10 ++++++++++ 1 file changed, 10 insertions(+)diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index 05e61e6c843f..7630d663cd51 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h@@ -1186,4 +1186,14 @@ static inline bool arch_has_pfn_modify_check(void) #define mm_pmd_folded(mm) __is_defined(__PAGETABLE_PMD_FOLDED) #endif +#ifndef pgd_large +#define pgd_large(x) 0 +#endif +#ifndef pud_large +#define pud_large(x) 0 +#endif +#ifndef pmd_large +#define pmd_large(x) 0 +#endif + #endif /* _ASM_GENERIC_PGTABLE_H */-- 2.20.1_______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
_______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel