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kernel: adjust mips highmem offset to avoid the need for -mlong-calls on systems with >256M RAM

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45891 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
Felix Fietkau 2015-06-05 08:07:35 +00:00
parent cf3625aba4
commit 487a879e33
2 changed files with 34 additions and 0 deletions
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17
target/linux/generic/patches-3.18/307-mips_highmem_offset.patch Normal file
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@ -0,0 +1,17 @@
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 */

17
target/linux/generic/patches-4.0/307-mips_highmem_offset.patch Normal file
View File

@ -0,0 +1,17 @@
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 */