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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/mm | |
| parent | powerpc/mm: move hugetlb_disabled into asm/hugetlb.h (diff) | |
| download | linux-dev-c5710cd20735037ba9be0e95530f0d3795ce07e6.tar.xz linux-dev-c5710cd20735037ba9be0e95530f0d3795ce07e6.zip | |
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/mm')
| -rw-r--r-- | arch/powerpc/mm/book3s64/hash_hugetlbpage.c | 16 | ||||
| -rw-r--r-- | arch/powerpc/mm/hugetlbpage.c | 23 |
2 files changed, 19 insertions, 20 deletions
diff --git a/arch/powerpc/mm/book3s64/hash_hugetlbpage.c b/arch/powerpc/mm/book3s64/hash_hugetlbpage.c index 2d4e02aa15a3..eefa89c6117b 100644 --- a/arch/powerpc/mm/book3s64/hash_hugetlbpage.c +++ b/arch/powerpc/mm/book3s64/hash_hugetlbpage.c @@ -15,6 +15,9 @@ #include <asm/cacheflush.h> #include <asm/machdep.h> +unsigned int hpage_shift; +EXPORT_SYMBOL(hpage_shift); + extern long hpte_insert_repeating(unsigned long hash, unsigned long vpn, unsigned long pa, unsigned long rlags, unsigned long vflags, int psize, int ssize); @@ -150,3 +153,16 @@ void huge_ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr old_pte, pte); set_huge_pte_at(vma->vm_mm, addr, ptep, pte); } + +void hugetlbpage_init_default(void) +{ + /* Set default large page size. Currently, we pick 16M or 1M + * depending on what is available + */ + if (mmu_psize_defs[MMU_PAGE_16M].shift) + hpage_shift = mmu_psize_defs[MMU_PAGE_16M].shift; + else if (mmu_psize_defs[MMU_PAGE_1M].shift) + hpage_shift = mmu_psize_defs[MMU_PAGE_1M].shift; + else if (mmu_psize_defs[MMU_PAGE_2M].shift) + hpage_shift = mmu_psize_defs[MMU_PAGE_2M].shift; +} diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index 7b7027aae73f..847fb495a628 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -28,9 +28,6 @@ bool hugetlb_disabled = false; -unsigned int HPAGE_SHIFT; -EXPORT_SYMBOL(HPAGE_SHIFT); - #define hugepd_none(hpd) (hpd_val(hpd) == 0) #define PTE_T_ORDER (__builtin_ffs(sizeof(pte_t)) - __builtin_ffs(sizeof(void *))) @@ -645,23 +642,9 @@ static int __init hugetlbpage_init(void) #endif } -#if defined(CONFIG_PPC_FSL_BOOK3E) || defined(CONFIG_PPC_8xx) - /* Default hpage size = 4M on FSL_BOOK3E and 512k on 8xx */ - if (mmu_psize_defs[MMU_PAGE_4M].shift) - HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_4M].shift; - else if (mmu_psize_defs[MMU_PAGE_512K].shift) - HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_512K].shift; -#else - /* Set default large page size. Currently, we pick 16M or 1M - * depending on what is available - */ - if (mmu_psize_defs[MMU_PAGE_16M].shift) - HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_16M].shift; - else if (mmu_psize_defs[MMU_PAGE_1M].shift) - HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_1M].shift; - else if (mmu_psize_defs[MMU_PAGE_2M].shift) - HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_2M].shift; -#endif + if (IS_ENABLED(HUGETLB_PAGE_SIZE_VARIABLE)) + hugetlbpage_init_default(); + return 0; } |