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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-07-05 19:58:29 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-07-05 20:27:16 +0100
commit0371d3f7e8f1cddaee1f215e42c09a40e235d810 (patch)
tree01f4b320ca6ed709d2b24a1eefa5499427ee36de
parent6f96521fab978046070a697926cf351c2c37af29 (diff)
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ARM: move memory layout sanity checking before meminfo initialization
Ensure that the meminfo array is sanity checked before we pass the memory to memblock. This helps to ensure that memblock and meminfo agree on the dimensions of memory, especially when more memory is passed than the kernel can deal with. Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--arch/arm/kernel/setup.c2
-rw-r--r--arch/arm/mm/mmu.c5
-rw-r--r--arch/arm/mm/nommu.c4
3 files changed, 9 insertions, 2 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index ed11fb0..acbb447 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -73,6 +73,7 @@ __setup("fpe=", fpe_setup);
#endif
extern void paging_init(struct machine_desc *desc);
+extern void sanity_check_meminfo(void);
extern void reboot_setup(char *str);
unsigned int processor_id;
@@ -900,6 +901,7 @@ void __init setup_arch(char **cmdline_p)
parse_early_param();
+ sanity_check_meminfo();
arm_memblock_init(&meminfo, mdesc);
paging_init(mdesc);
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 9d9e736..594d677 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -759,7 +759,7 @@ early_param("vmalloc", early_vmalloc);
static phys_addr_t lowmem_limit __initdata = 0;
-static void __init sanity_check_meminfo(void)
+void __init sanity_check_meminfo(void)
{
int i, j, highmem = 0;
@@ -1032,8 +1032,9 @@ void __init paging_init(struct machine_desc *mdesc)
{
void *zero_page;
+ memblock_set_current_limit(lowmem_limit);
+
build_mem_type_table();
- sanity_check_meminfo();
prepare_page_table();
map_lowmem();
devicemaps_init(mdesc);
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 687d023..941a98c 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -27,6 +27,10 @@ void __init arm_mm_memblock_reserve(void)
memblock_reserve(CONFIG_VECTORS_BASE, PAGE_SIZE);
}
+void __init sanity_check_meminfo(void)
+{
+}
+
/*
* paging_init() sets up the page tables, initialises the zone memory
* maps, and sets up the zero page, bad page and bad page tables.