[ARM] mm: move vmalloc= parsing to arch/arm/mm/mmu.c
There's no point scattering this around the tree, the parsing
of the parameter might as well live beside the code which uses
it. That also means we can make vmalloc_reserve a static
variable.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index 7e8d22f..7834adb 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -140,14 +140,6 @@
#endif
/*
- * Amount of memory reserved for the vmalloc() area, and minimum
- * address for vmalloc mappings.
- */
-extern unsigned long vmalloc_reserve;
-
-#define VMALLOC_MIN (void *)(VMALLOC_END - vmalloc_reserve)
-
-/*
* PFNs are used to describe any physical page; this means
* PFN 0 == physical address 0.
*
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 2f5d3641..e4a975f 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -84,8 +84,6 @@
unsigned int elf_hwcap;
EXPORT_SYMBOL(elf_hwcap);
-unsigned long __initdata vmalloc_reserve = 128 << 20;
-
#ifdef MULTI_CPU
struct processor processor;
@@ -415,17 +413,6 @@
__early_param("mem=", early_mem);
/*
- * vmalloc=size forces the vmalloc area to be exactly 'size'
- * bytes. This can be used to increase (or decrease) the vmalloc
- * area - the default is 128m.
- */
-static void __init early_vmalloc(char **arg)
-{
- vmalloc_reserve = memparse(*arg, arg);
-}
-__early_param("vmalloc=", early_vmalloc);
-
-/*
* Initial parsing of the command line.
*/
static void __init parse_cmdline(char **cmdline_p, char *from)
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index f03ad87..e7af83e 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -566,6 +566,28 @@
create_mapping(io_desc + i);
}
+static unsigned long __initdata vmalloc_reserve = SZ_128M;
+
+/*
+ * vmalloc=size forces the vmalloc area to be exactly 'size'
+ * bytes. This can be used to increase (or decrease) the vmalloc
+ * area - the default is 128m.
+ */
+static void __init early_vmalloc(char **arg)
+{
+ vmalloc_reserve = memparse(*arg, arg);
+
+ if (vmalloc_reserve < SZ_16M) {
+ vmalloc_reserve = SZ_16M;
+ printk(KERN_WARNING
+ "vmalloc area too small, limiting to %luMB\n",
+ vmalloc_reserve >> 20);
+ }
+}
+__early_param("vmalloc=", early_vmalloc);
+
+#define VMALLOC_MIN (void *)(VMALLOC_END - vmalloc_reserve)
+
static int __init check_membank_valid(struct membank *mb)
{
/*
