diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2015-11-30 13:28:16 +0100 |
|---|---|---|
| committer | Amit Pundir <amit.pundir@linaro.org> | 2016-10-12 17:34:22 +0530 |
| commit | 1c4a6945fde71d5a426ea8adab895643ff848c3f (patch) | |
| tree | 6a5cc4bf6be0f836a0a4a282d92fee7c53bff08c | |
| parent | a400076119c0ce8228bf36a4f8fdb69b1c242523 (diff) | |
BACKPORT: arm64: only consider memblocks with NOMAP cleared for linear mapping
Take the new memblock attribute MEMBLOCK_NOMAP into account when
deciding whether a certain region is or should be covered by the
kernel direct mapping.
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Change-Id: Id7346a09bb3aee5e9a5ef8812251f80cf8265532
(cherry picked from commit 68709f45385aeddb0ca96a060c0c8259944f321b)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
| -rw-r--r-- | arch/arm64/mm/init.c | 2 | ||||
| -rw-r--r-- | arch/arm64/mm/mmu.c | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index fe4fe832ee47..05a1088377aa 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -131,7 +131,7 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max) int pfn_valid(unsigned long pfn) { - return (pfn & PFN_MASK) == pfn && memblock_is_memory(pfn << PAGE_SHIFT); + return (pfn & PFN_MASK) == pfn && memblock_is_map_memory(pfn << PAGE_SHIFT); } EXPORT_SYMBOL(pfn_valid); #endif diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 2da97065c2fe..1cab2703f5a8 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -438,6 +438,8 @@ static void __init map_mem(pgd_t *pgd) if (start >= end) break; + if (memblock_is_nomap(reg)) + continue; __map_memblock(pgd, start, end); } |