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.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
---
arch/arm/mm/init.c | 2 +-
arch/arm/mm/mmu.c | 3 +++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 8a63b4cdc0f2..1c667c6804a6 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -191,7 +191,7 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max_low,
#ifdef CONFIG_HAVE_ARCH_PFN_VALID
int pfn_valid(unsigned long pfn)
{
- return memblock_is_memory(__pfn_to_phys(pfn));
+ return memblock_is_map_memory(__pfn_to_phys(pfn));
}
EXPORT_SYMBOL(pfn_valid);
#endif
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index b74686be6272..008f28ef6d68 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1388,6 +1388,9 @@ static void __init map_lowmem(void)
phys_addr_t end = start + reg->size;
struct map_desc map;
+ if (memblock_is_nomap(reg))
+ continue;
+
if (end > arm_lowmem_limit)
end = arm_lowmem_limit;
if (start >= end)
--
1.9.1
--
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