Merge branch 'uprobes-v7' of git://git.linaro.org/people/dave.long/linux into devel-stable

This patch series adds basic uprobes support to ARM. It is based on
patches developed earlier by Rabin Vincent. That approach of adding
hooks into the kprobes instruction parsing code was not well received.
This approach separates the ARM instruction parsing code in kprobes out
into a separate set of functions which can be used by both kprobes and
uprobes. Both kprobes and uprobes then provide their own semantic action
tables to process the results of the parsing.

1 files changed, 3 insertions, 2 deletions

diff --git a/arch/powerpc/include/asm/compat.h b/arch/powerpc/include/asm/compat.h
index 84fdf6857c31..a613d2c82fd9 100644
--- a/arch/powerpc/include/asm/compat.h
+++ b/arch/powerpc/include/asm/compat.h
@@ -200,10 +200,11 @@ static inline void __user *arch_compat_alloc_user_space(long len)
 
         /*
          * We can't access below the stack pointer in the 32bit ABI and
-         * can access 288 bytes in the 64bit ABI
+         * can access 288 bytes in the 64bit big-endian ABI,
+         * or 512 bytes with the new ELFv2 little-endian ABI.
          */
         if (!is_32bit_task())
-                usp -= 288;
+                usp -= USER_REDZONE_SIZE;
 
         return (void __user *) (usp - len);
 }