powerpc/64: Optimise syscall entry for virtual, relocatable case

[cascardo/linux.git] / arch / powerpc / kernel / exceptions-64s.S

diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 21ab5dd..3d1f3cf 100644 (file)
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -62,14 +62,11 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE)                              \
         * is volatile across system calls.
         */
 #define SYSCALL_PSERIES_2_DIRECT                               \
-       mflr    r10 ;                                           \
        LOAD_HANDLER(r12, system_call_entry) ;                  \
        mtctr   r12 ;                                           \
        mfspr   r12,SPRN_SRR1 ;                                 \
-       /* Re-use of r13... No spare regs to do this */ \
-       li      r13,MSR_RI ;                                    \
-       mtmsrd  r13,1 ;                                         \
-       GET_PACA(r13) ; /* get r13 back */                      \
+       li      r10,MSR_RI ;                                    \
+       mtmsrd  r10,1 ;                                         \
        bctr ;
 #else
        /* We can branch directly */