Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Pull power fixes from Ben Herrenschmidt:
 "Here are a couple of powerpc fixes for 3.14.

  One is (another!) nasty TM problem, we can crash the kernel by forking
  inside a transaction.  The other one is a simple fix for an alignment
  issue which can hurt in LE mode"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Align p_dyn, p_rela and p_st symbols
  powerpc/tm: Fix crash when forking inside a transaction

2 files changed, 10 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 8d4c247f1738..af064d28b365 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1048,6 +1048,15 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
         flush_altivec_to_thread(src);
         flush_vsx_to_thread(src);
         flush_spe_to_thread(src);
+        /*
+         * Flush TM state out so we can copy it.  __switch_to_tm() does this
+         * flush but it removes the checkpointed state from the current CPU and
+         * transitions the CPU out of TM mode.  Hence we need to call
+         * tm_recheckpoint_new_task() (on the same task) to restore the
+         * checkpointed state back and the TM mode.
+         */
+        __switch_to_tm(src);
+        tm_recheckpoint_new_task(src);
 
         *dst = *src;
 
diff --git a/arch/powerpc/kernel/reloc_64.S b/arch/powerpc/kernel/reloc_64.S
index 1482327cfeba..d88736fbece6 100644
--- a/arch/powerpc/kernel/reloc_64.S
+++ b/arch/powerpc/kernel/reloc_64.S
@@ -81,6 +81,7 @@ _GLOBAL(relocate)
 
 6:      blr
 
+.balign 8
 p_dyn:  .llong  __dynamic_start - 0b
 p_rela: .llong  __rela_dyn_start - 0b
 p_st:   .llong  _stext - 0b