README: Remove resolved MicroBlaze known issue

* The "MicroBlaze Linux Kernel 3.8+ and GCC 4.8+ fails to boot" issue
  has been resolved

Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>

1 files changed, 0 insertions, 21 deletions

diff --git a/README b/README
index 091d3b2a..6bee5d7d 100644
--- a/README
+++ b/README
@@ -82,27 +82,6 @@ Booting
 Please see the associated README file for each avaliable boot method in the
 'docs/BOOT.*' files of this layer.
 
-Known Issues
-============
-
-MicroBlaze Linux Kernel 3.8+ and GCC 4.8+ fails to boot
--------------------------------------------------------
-There is a regression in GCC 4.8 that causes a race condition in the kernel. It
-occurs due to changes in the optimization and improper handling of certain
-branch optimization where delay slots are used.
-
-The error during kernel boot looks similar to:
-        ------------[ cut here ]------------
-        WARNING: at mm/mmap.c:2657 exit_mmap+0x158/0x178()
-
-There are two work arounds for this issue, the first which is recommended is to
-use the MicroBlaze external toolchain that is provided by Xilinx SDK or
-PetaLinux.
-
-The the second workaround applies to the linux-xlnx only, disable the kernel
-configuration "CONFIG_OPTIMIZE_FOR_SIZE". This prevents the compiler from trying
-to optimize the delay slots incorrectly.
-
 Configuring External Toolchain
 ==============================