[PATCH 3.12 02/88] MIPS: Fix 64k page support for 32 bit kernels.

From: Jiri Slaby
Date: Thu Jul 14 2016 - 04:47:18 EST

From: Ralf Baechle <ralf@xxxxxxxxxxxxxx>

3.12-stable review patch. If anyone has any objections, please let me know.


commit d7de413475f443957a0c1d256e405d19b3a2cb22 upstream.

TASK_SIZE was defined as 0x7fff8000UL which for 64k pages is not a
multiple of the page size. Somewhere further down the math fails
such that executing an ELF binary fails.

Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Tested-by: Joshua Henderson <joshua.henderson@xxxxxxxxxxxxx>
Cc: James Hogan <james.hogan@xxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
arch/mips/include/asm/processor.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
index 3605b844ad87..efe9964ea9b4 100644
--- a/arch/mips/include/asm/processor.h
+++ b/arch/mips/include/asm/processor.h
@@ -51,7 +51,7 @@ extern unsigned int vced_count, vcei_count;
* User space process size: 2GB. This is hardcoded into a few places,
* so don't change it unless you know what you are doing.
-#define TASK_SIZE 0x7fff8000UL
+#define TASK_SIZE 0x80000000UL

#ifdef __KERNEL__