1 files changed, 39 insertions, 0 deletions

diff --git a/meta/recipes-core/glibc/glibc/0006-nativesdk-glibc-Allow-64-bit-atomics-for-x86.patch b/meta/recipes-core/glibc/glibc/0006-nativesdk-glibc-Allow-64-bit-atomics-for-x86.patch
new file mode 100644
index 0000000000..0d070a93b9
--- /dev/null
+++ b/meta/recipes-core/glibc/glibc/0006-nativesdk-glibc-Allow-64-bit-atomics-for-x86.patch
@@ -0,0 +1,39 @@
+From f9993e652bd4a0f03402d0c527cf24b83d0ff7ea Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Thu, 31 Dec 2015 14:35:35 -0800
+Subject: [PATCH] nativesdk-glibc: Allow 64 bit atomics for x86
+
+The fix consist of allowing 64bit atomic ops for x86.
+This should be safe for i586 and newer CPUs.
+It also makes the synchronization more efficient.
+
+Upstream-Status: Inappropriate [OE-Specific]
+
+Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
+Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ sysdeps/x86/atomic-machine.h | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/sysdeps/x86/atomic-machine.h b/sysdeps/x86/atomic-machine.h
+index bb49648374..aa08d3c0a7 100644
+--- a/sysdeps/x86/atomic-machine.h
++++ b/sysdeps/x86/atomic-machine.h
+@@ -58,15 +58,14 @@ typedef uintmax_t uatomic_max_t;
+ #endif
+ 
+ #define USE_ATOMIC_COMPILER_BUILTINS   1
++# define __HAVE_64B_ATOMICS            1
+ 
+ #ifdef __x86_64__
+-# define __HAVE_64B_ATOMICS            1
+ # define SP_REG                                "rsp"
+ # define SEG_REG                       "fs"
+ # define BR_CONSTRAINT                 "q"
+ # define IBR_CONSTRAINT                        "iq"
+ #else
+-# define __HAVE_64B_ATOMICS            0
+ # define SP_REG                                "esp"
+ # define SEG_REG                       "gs"
+ # define BR_CONSTRAINT                 "r"