Openwrt/target/linux/ar7/patches-3.18/200-free-mem-below-kernel-offset.patch
John Crispin 9f0f80faac ar7: add 3.18 support
this is only compile tested

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 44344
2015-02-09 12:12:30 +00:00

16 lines
461 B
Diff

--- a/arch/mips/ar7/memory.c
+++ b/arch/mips/ar7/memory.c
@@ -66,5 +66,11 @@ void __init prom_meminit(void)
void __init prom_free_prom_memory(void)
{
- /* Nothing to free */
+ /* adapted from arch/mips/txx9/generic/setup.c */
+ unsigned long saddr = PHYS_OFFSET + PAGE_SIZE;
+ unsigned long eaddr = __pa_symbol(&_text);
+
+ /* free memory between prom-record and kernel _text base */
+ if (saddr < eaddr)
+ free_init_pages("prom memory", saddr, eaddr);
}