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| author | Zong Li <zong.li@sifive.com> | 2019-11-08 01:00:40 -0800 |
|---|---|---|
| committer | Paul Walmsley <paul.walmsley@sifive.com> | 2019-11-12 12:01:44 -0800 |
| commit | 0fdc636cd95ceeba48b8c171ac338df46b795101 (patch) | |
| tree | e68c9c09e10bd37fba6dabeaa5df7eb4daa6ee77 /arch/riscv/mm | |
| parent | a99d8080aaf358d5d23581244e5da23b35e340b9 (diff) | |
| download | linux-0fdc636cd95ceeba48b8c171ac338df46b795101.tar.bz2 | |
riscv: Use PMD_SIZE to replace PTE_PARENT_SIZE
The PMD_SIZE is equal to PGDIR_SIZE when __PAGETABLE_PMD_FOLDED is
defined.
Signed-off-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
[paul.walmsley@sifive.com: fixed spelling in commit summary]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Diffstat (limited to 'arch/riscv/mm')
| -rw-r--r-- | arch/riscv/mm/init.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index 573463d1c799..e83df7a24938 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -273,7 +273,6 @@ static void __init create_pmd_mapping(pmd_t *pmdp, #define get_pgd_next_virt(__pa) get_pmd_virt(__pa) #define create_pgd_next_mapping(__nextp, __va, __pa, __sz, __prot) \ create_pmd_mapping(__nextp, __va, __pa, __sz, __prot) -#define PTE_PARENT_SIZE PMD_SIZE #define fixmap_pgd_next fixmap_pmd #else #define pgd_next_t pte_t @@ -281,7 +280,6 @@ static void __init create_pmd_mapping(pmd_t *pmdp, #define get_pgd_next_virt(__pa) get_pte_virt(__pa) #define create_pgd_next_mapping(__nextp, __va, __pa, __sz, __prot) \ create_pte_mapping(__nextp, __va, __pa, __sz, __prot) -#define PTE_PARENT_SIZE PGDIR_SIZE #define fixmap_pgd_next fixmap_pte #endif @@ -314,14 +312,11 @@ static void __init create_pgd_mapping(pgd_t *pgdp, static uintptr_t __init best_map_size(phys_addr_t base, phys_addr_t size) { - uintptr_t map_size = PAGE_SIZE; + /* Upgrade to PMD_SIZE mappings whenever possible */ + if ((base & (PMD_SIZE - 1)) || (size & (PMD_SIZE - 1))) + return PAGE_SIZE; - /* Upgrade to PMD/PGDIR mappings whenever possible */ - if (!(base & (PTE_PARENT_SIZE - 1)) && - !(size & (PTE_PARENT_SIZE - 1))) - map_size = PTE_PARENT_SIZE; - - return map_size; + return PMD_SIZE; } /* |