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| author | Mike Rapoport <rppt@linux.ibm.com> | 2019-11-24 09:57:20 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-01-30 11:14:28 +0100 |
| commit | 5637bc5048340456176fcd4c8986edc1ac1acbe1 (patch) | |
| tree | 166c9b855d298204f44de91e93c22e5091a6b930 /arch/sparc/include/asm | |
| parent | sparc/console: kill off obsolete declarations (diff) | |
| download | linux-5637bc5048340456176fcd4c8986edc1ac1acbe1.tar.xz linux-5637bc5048340456176fcd4c8986edc1ac1acbe1.zip | |
sparc64: add support for folded p4d page tables
Implement primitives necessary for the 4th level folding, add walks of p4d
level where appropriate and replace 5level-fixup.h with pgtable-nop4d.h.
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include/asm')
| -rw-r--r-- | arch/sparc/include/asm/pgalloc_64.h | 6 | ||||
| -rw-r--r-- | arch/sparc/include/asm/pgtable_64.h | 24 |
2 files changed, 15 insertions, 15 deletions
diff --git a/arch/sparc/include/asm/pgalloc_64.h b/arch/sparc/include/asm/pgalloc_64.h index 48abccba4991..b0d90a1774a2 100644 --- a/arch/sparc/include/asm/pgalloc_64.h +++ b/arch/sparc/include/asm/pgalloc_64.h @@ -16,12 +16,12 @@ extern struct kmem_cache *pgtable_cache; -static inline void __pgd_populate(pgd_t *pgd, pud_t *pud) +static inline void __p4d_populate(p4d_t *p4d, pud_t *pud) { - pgd_set(pgd, pud); + p4d_set(p4d, pud); } -#define pgd_populate(MM, PGD, PUD) __pgd_populate(PGD, PUD) +#define p4d_populate(MM, P4D, PUD) __p4d_populate(P4D, PUD) static inline pgd_t *pgd_alloc(struct mm_struct *mm) { diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index 1599de730532..1450e113a7d2 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -13,7 +13,7 @@ * the SpitFire page tables. */ -#include <asm-generic/5level-fixup.h> +#include <asm-generic/pgtable-nop4d.h> #include <linux/compiler.h> #include <linux/const.h> #include <asm/types.h> @@ -810,9 +810,9 @@ static inline int pmd_present(pmd_t pmd) #define pud_bad(pud) (pud_val(pud) & ~PAGE_MASK) -#define pgd_none(pgd) (!pgd_val(pgd)) +#define p4d_none(p4d) (!p4d_val(p4d)) -#define pgd_bad(pgd) (pgd_val(pgd) & ~PAGE_MASK) +#define p4d_bad(p4d) (p4d_val(p4d) & ~PAGE_MASK) #ifdef CONFIG_TRANSPARENT_HUGEPAGE void set_pmd_at(struct mm_struct *mm, unsigned long addr, @@ -859,13 +859,13 @@ static inline unsigned long pud_page_vaddr(pud_t pud) #define pmd_clear(pmdp) (pmd_val(*(pmdp)) = 0UL) #define pud_present(pud) (pud_val(pud) != 0U) #define pud_clear(pudp) (pud_val(*(pudp)) = 0UL) -#define pgd_page_vaddr(pgd) \ - ((unsigned long) __va(pgd_val(pgd))) -#define pgd_present(pgd) (pgd_val(pgd) != 0U) -#define pgd_clear(pgdp) (pgd_val(*(pgdp)) = 0UL) +#define p4d_page_vaddr(p4d) \ + ((unsigned long) __va(p4d_val(p4d))) +#define p4d_present(p4d) (p4d_val(p4d) != 0U) +#define p4d_clear(p4dp) (p4d_val(*(p4dp)) = 0UL) /* only used by the stubbed out hugetlb gup code, should never be called */ -#define pgd_page(pgd) NULL +#define p4d_page(p4d) NULL static inline unsigned long pud_large(pud_t pud) { @@ -884,8 +884,8 @@ static inline unsigned long pud_pfn(pud_t pud) /* Same in both SUN4V and SUN4U. */ #define pte_none(pte) (!pte_val(pte)) -#define pgd_set(pgdp, pudp) \ - (pgd_val(*(pgdp)) = (__pa((unsigned long) (pudp)))) +#define p4d_set(p4dp, pudp) \ + (p4d_val(*(p4dp)) = (__pa((unsigned long) (pudp)))) /* to find an entry in a page-table-directory. */ #define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1)) @@ -896,8 +896,8 @@ static inline unsigned long pud_pfn(pud_t pud) /* Find an entry in the third-level page table.. */ #define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)) -#define pud_offset(pgdp, address) \ - ((pud_t *) pgd_page_vaddr(*(pgdp)) + pud_index(address)) +#define pud_offset(p4dp, address) \ + ((pud_t *) p4d_page_vaddr(*(p4dp)) + pud_index(address)) /* Find an entry in the second-level page table.. */ #define pmd_offset(pudp, address) \ |