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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-04-26 05:59:48 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-05-03 01:20:24 +1000 |
| commit | c5710cd20735037ba9be0e95530f0d3795ce07e6 (patch) | |
| tree | 045e2e4b5ce52e3e4ef8a14d4d8bd38cd6b4ae46 /arch/powerpc/include | |
| parent | 45d0ba527b575d47b2be75dd517b57cceda04bfe (diff) | |
| download | linux-c5710cd20735037ba9be0e95530f0d3795ce07e6.tar.bz2 | |
powerpc/mm: cleanup HPAGE_SHIFT setup
Only book3s/64 may select default among several HPAGE_SHIFT at runtime.
8xx always defines 512K pages as default
FSL_BOOK3E always defines 4M pages as default
This patch limits HUGETLB_PAGE_SIZE_VARIABLE to book3s/64
moves the definitions in subarches files.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/hugetlb.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/page.h | 11 |
2 files changed, 10 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h index 84598c6b0959..20a101046cff 100644 --- a/arch/powerpc/include/asm/hugetlb.h +++ b/arch/powerpc/include/asm/hugetlb.h @@ -15,6 +15,8 @@ extern bool hugetlb_disabled; +void hugetlbpage_init_default(void); + void flush_dcache_icache_hugepage(struct page *page); int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h index 6b508420d92b..dbc8c0679480 100644 --- a/arch/powerpc/include/asm/page.h +++ b/arch/powerpc/include/asm/page.h @@ -28,10 +28,15 @@ #define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT) #ifndef __ASSEMBLY__ -#ifdef CONFIG_HUGETLB_PAGE -extern unsigned int HPAGE_SHIFT; -#else +#ifndef CONFIG_HUGETLB_PAGE #define HPAGE_SHIFT PAGE_SHIFT +#elif defined(CONFIG_PPC_BOOK3S_64) +extern unsigned int hpage_shift; +#define HPAGE_SHIFT hpage_shift +#elif defined(CONFIG_PPC_8xx) +#define HPAGE_SHIFT 19 /* 512k pages */ +#elif defined(CONFIG_PPC_FSL_BOOK3E) +#define HPAGE_SHIFT 22 /* 4M pages */ #endif #define HPAGE_SIZE ((1UL) << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE - 1)) |