openwrtv4/target/linux/generic/patches-3.18/307-mips_highmem_offset.patch
Felix Fietkau 5a64d5337b kernel: adjust mips highmem offset to avoid the need for -mlong-calls on systems with >256M RAM
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 45891
2015-06-05 08:07:35 +00:00

17 lines
582 B
Diff

Adjust highmem offset to 0x10000000 to ensure that all kmalloc allocations
stay within the same 256M boundary. This ensures that -mlong-calls is not
needed on systems with more than 256M RAM.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
--- a/arch/mips/include/asm/mach-generic/spaces.h
+++ b/arch/mips/include/asm/mach-generic/spaces.h
@@ -44,7 +44,7 @@
* Memory above this physical address will be considered highmem.
*/
#ifndef HIGHMEM_START
-#define HIGHMEM_START _AC(0x20000000, UL)
+#define HIGHMEM_START _AC(0x10000000, UL)
#endif
#endif /* CONFIG_32BIT */