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| author |   Mark Rutland <mark.rutland@arm.com> | 2016-03-22 10:11:45 +0000 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2016-03-24 16:32:29 +0000 |
| commit | c661cb1c537e2364bfdabb298fb934fd77445e98 (patch) | |
| tree | e4c6a6b752fa1a74019f0fa9d56a8b360ec296fc /arch | |
| parent | arm64: kaslr: use callee saved register to preserve SCTLR across C call (diff) | |
| download | linux-dev-c661cb1c537e2364bfdabb298fb934fd77445e98.tar.xz linux-dev-c661cb1c537e2364bfdabb298fb934fd77445e98.zip | |
arm64: consistently use p?d_set_huge
Commit 324420bf91f60582 ("arm64: add support for ioremap() block
mappings") added new p?d_set_huge functions which do the hard work to
generate and set a correct block entry.
These differ from open-coded huge page creation in the early page table
code by explicitly setting the P?D_TYPE_SECT bits (which are implicitly
retained by mk_sect_prot() for any valid prot), but are otherwise
identical (and cannot fail on arm64).
For simplicity and consistency, make use of these in the initial page
table creation code.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/mm/mmu.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index d2d8b8c2e17f..f3e5c74233f3 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -211,8 +211,7 @@ static void alloc_init_pmd(pud_t *pud, unsigned long addr, unsigned long end, if (((addr | next | phys) & ~SECTION_MASK) == 0 && block_mappings_allowed(pgtable_alloc)) { pmd_t old_pmd =*pmd; - set_pmd(pmd, __pmd(phys | - pgprot_val(mk_sect_prot(prot)))); + pmd_set_huge(pmd, phys, prot); /* * Check for previous table entries created during * boot (__create_page_tables) and flush them. @@ -272,8 +271,7 @@ static void alloc_init_pud(pgd_t *pgd, unsigned long addr, unsigned long end, if (use_1G_block(addr, next, phys) && block_mappings_allowed(pgtable_alloc)) { pud_t old_pud = *pud; - set_pud(pud, __pud(phys | - pgprot_val(mk_sect_prot(prot)))); + pud_set_huge(pud, phys, prot); /* * If we have an old value for a pud, it will |