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author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-04-26 05:59:44 +0000 |
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committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-05-03 01:20:23 +1000 |
commit | 8197af22be01e7c9ab476138652e0dc8cd22a207 (patch) | |
tree | ec0a615f31e2b2ded8beb9c65fec9077d589147c /arch/powerpc/include/asm/nohash/hugetlb-book3e.h | |
parent | powerpc/mm: make gup_hugepte() static (diff) | |
download | wireguard-linux-8197af22be01e7c9ab476138652e0dc8cd22a207.tar.xz wireguard-linux-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 '')
-rw-r--r-- | arch/powerpc/include/asm/nohash/hugetlb-book3e.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/nohash/hugetlb-book3e.h b/arch/powerpc/include/asm/nohash/hugetlb-book3e.h new file mode 100644 index 000000000000..e94f1cd048ee --- /dev/null +++ b/arch/powerpc/include/asm/nohash/hugetlb-book3e.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H +#define _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H + +static inline pte_t *hugepd_page(hugepd_t hpd) +{ + if (WARN_ON(!hugepd_ok(hpd))) + return NULL; + + return (pte_t *)((hpd_val(hpd) & ~HUGEPD_SHIFT_MASK) | PD_HUGE); +} + +static inline unsigned int hugepd_shift(hugepd_t hpd) +{ + return hpd_val(hpd) & HUGEPD_SHIFT_MASK; +} + +static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr, + unsigned int pdshift) +{ + /* + * On FSL BookE, we have multiple higher-level table entries that + * point to the same hugepte. Just use the first one since they're all + * identical. So for that case, idx=0. + */ + return hugepd_page(hpd); +} + +void flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr); + +#endif /* _ASM_POWERPC_NOHASH_HUGETLB_BOOK3E_H */ |