diff options
| author |   Christophe Leroy <christophe.leroy@c-s.fr> | 2019-04-26 05:59:44 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-05-03 01:20:23 +1000 |
| commit | 8197af22be01e7c9ab476138652e0dc8cd22a207 (patch) | |
| tree | ec0a615f31e2b2ded8beb9c65fec9077d589147c /arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h | |
| parent | powerpc/mm: make gup_hugepte() static (diff) | |
| download | linux-dev-8197af22be01e7c9ab476138652e0dc8cd22a207.tar.xz linux-dev-8197af22be01e7c9ab476138652e0dc8cd22a207.zip | |
powerpc/mm: split asm/hugetlb.h into dedicated subarch files
Three subarches support hugepages:
- fsl book3e
- book3s/64
- 8xx
This patch splits asm/hugetlb.h to reduce the #ifdef mess.
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/asm/nohash/32/hugetlb-8xx.h')
| -rw-r--r-- | arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h b/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h new file mode 100644 index 000000000000..997f5b3d6b99 --- /dev/null +++ b/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H +#define _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H + +static inline pte_t *hugepd_page(hugepd_t hpd) +{ + BUG_ON(!hugepd_ok(hpd)); + + return (pte_t *)__va(hpd_val(hpd) & ~HUGEPD_SHIFT_MASK); +} + +static inline unsigned int hugepd_shift(hugepd_t hpd) +{ + return ((hpd_val(hpd) & _PMD_PAGE_MASK) >> 1) + 17; +} + +static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr, + unsigned int pdshift) +{ + unsigned long idx = (addr & ((1UL << pdshift) - 1)) >> PAGE_SHIFT; + + return hugepd_page(hpd) + idx; +} + +static inline void flush_hugetlb_page(struct vm_area_struct *vma, + unsigned long vmaddr) +{ + flush_tlb_page(vma, vmaddr); +} + +#endif /* _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H */ |