[RFC PATCH 11/24] mm/hugetlb: Add vmemmap_pmd_huge macro for x86
From: Muchun Song <hidden>
Date: 2020-09-16 00:43:43
Also in:
linux-fsdevel, linux-mm, lkml
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
Use pmd_large instead of pmd_huge on x86, so we implement the vmemmap_pmd_huge macro. Signed-off-by: Muchun Song <redacted> --- arch/x86/include/asm/hugetlb.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
index f5e882f999cd..7c3eb60c2198 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h@@ -4,10 +4,17 @@ #include <asm/page.h> #include <asm-generic/hugetlb.h> +#include <asm/pgtable.h> #ifdef CONFIG_HUGETLB_PAGE_FREE_VMEMMAP #define VMEMMAP_HPAGE_SHIFT PMD_SHIFT #define arch_vmemmap_support_huge_mapping() boot_cpu_has(X86_FEATURE_PSE) + +#define vmemmap_pmd_huge vmemmap_pmd_huge +static inline bool vmemmap_pmd_huge(pmd_t *pmd) +{ + return pmd_large(*pmd); +} #endif #define hugepages_supported() boot_cpu_has(X86_FEATURE_PSE)
--
2.20.1