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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>
This commit is contained in:
Zong Li 2019-11-08 01:00:40 -08:00 committed by Paul Walmsley
parent a99d8080aa
commit 0fdc636cd9
1 changed files with 4 additions and 9 deletions
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13
arch/riscv/mm/init.c
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@ -273,7 +273,6 @@ static void __init create_pmd_mapping(pmd_t *pmdp,
#define get_pgd_next_virt(__pa) get_pmd_virt(__pa) #define get_pgd_next_virt(__pa) get_pmd_virt(__pa)
#define create_pgd_next_mapping(__nextp, __va, __pa, __sz, __prot) \ #define create_pgd_next_mapping(__nextp, __va, __pa, __sz, __prot) \
create_pmd_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 #define fixmap_pgd_next fixmap_pmd
#else #else
#define pgd_next_t pte_t #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 get_pgd_next_virt(__pa) get_pte_virt(__pa)
#define create_pgd_next_mapping(__nextp, __va, __pa, __sz, __prot) \ #define create_pgd_next_mapping(__nextp, __va, __pa, __sz, __prot) \
create_pte_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 #define fixmap_pgd_next fixmap_pte
#endif #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) 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 */ return PMD_SIZE;
if (!(base & (PTE_PARENT_SIZE - 1)) &&
!(size & (PTE_PARENT_SIZE - 1)))
map_size = PTE_PARENT_SIZE;
return map_size;
} }
/* /*