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Diffstat (limited to 'arch/arm/mm/mmu.c')
-rw-r--r--arch/arm/mm/mmu.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 6ca7d9aa896f..870838a46d52 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1072,6 +1072,7 @@ void __init sanity_check_meminfo(void)
int highmem = 0;
phys_addr_t vmalloc_limit = __pa(vmalloc_min - 1) + 1;
struct memblock_region *reg;
+ bool should_use_highmem = false;
for_each_memblock(memory, reg) {
phys_addr_t block_start = reg->base;
@@ -1090,6 +1091,7 @@ void __init sanity_check_meminfo(void)
pr_notice("Ignoring RAM at %pa-%pa (!CONFIG_HIGHMEM)\n",
&block_start, &block_end);
memblock_remove(reg->base, reg->size);
+ should_use_highmem = true;
continue;
}
@@ -1100,6 +1102,7 @@ void __init sanity_check_meminfo(void)
&block_start, &block_end, &vmalloc_limit);
memblock_remove(vmalloc_limit, overlap_size);
block_end = vmalloc_limit;
+ should_use_highmem = true;
}
}
@@ -1134,6 +1137,9 @@ void __init sanity_check_meminfo(void)
}
}
+ if (should_use_highmem)
+ pr_notice("Consider using a HIGHMEM enabled kernel.\n");
+
high_memory = __va(arm_lowmem_limit - 1) + 1;
/*
@@ -1494,6 +1500,7 @@ void __init paging_init(const struct machine_desc *mdesc)
build_mem_type_table();
prepare_page_table();
map_lowmem();
+ memblock_set_current_limit(arm_lowmem_limit);
dma_contiguous_remap();
devicemaps_init(mdesc);
kmap_init();