powerpc: Save the TAR register earlier

[linux-imx.git] / arch / powerpc / kernel / entry_64.S

diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 4674fe647ad7481e4b92b937b2de2206133eda6c..2bd0b885b0fe901328d9ae44f7703cca0a159676 100644 (file)
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -449,15 +449,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_DSCR)
 
 #ifdef CONFIG_PPC_BOOK3S_64
 BEGIN_FTR_SECTION
-       /*
-        * Back up the TAR across context switches.  Note that the TAR is not
-        * available for use in the kernel.  (To provide this, the TAR should
-        * be backed up/restored on exception entry/exit instead, and be in
-        * pt_regs.  FIXME, this should be in pt_regs anyway (for debug).)
-        */
-       mfspr   r0,SPRN_TAR
-       std     r0,THREAD_TAR(r3)
-
        /* Event based branch registers */
        mfspr   r0, SPRN_BESCR
        std     r0, THREAD_BESCR(r3)