powerpc/64: Use {SAVE,REST}_NVGPRS macros

In entry_64.S there are places that open code saving and restoring the
non-volatile registers. There are already macros for doing this so use
them.

Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191211023552.16480-1-jniethe5@gmail.com

diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 3fd3ef3..0a82bfd 100644 (file)
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -597,8 +597,7 @@ _GLOBAL(_switch)
        std     r0,16(r1)
        stdu    r1,-SWITCH_FRAME_SIZE(r1)
        /* r3-r13 are caller saved -- Cort */
-       SAVE_8GPRS(14, r1)
-       SAVE_10GPRS(22, r1)
+       SAVE_NVGPRS(r1)
        std     r0,_NIP(r1)     /* Return to switch caller */
        mfcr    r23
        std     r23,_CCR(r1)
@@ -722,8 +721,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S)
        mtcrf   0xFF,r6
 
        /* r3-r13 are destroyed -- Cort */
-       REST_8GPRS(14, r1)
-       REST_10GPRS(22, r1)
+       REST_NVGPRS(r1)
 
        /* convert old thread to its task_struct for return value */
        addi    r3,r3,-THREAD
@@ -1155,8 +1153,7 @@ _GLOBAL(enter_rtas)
         */
        SAVE_GPR(2, r1)                 /* Save the TOC */
        SAVE_GPR(13, r1)                /* Save paca */
-       SAVE_8GPRS(14, r1)              /* Save the non-volatiles */
-       SAVE_10GPRS(22, r1)             /* ditto */
+       SAVE_NVGPRS(r1)                 /* Save the non-volatiles */
 
        mfcr    r4
        std     r4,_CCR(r1)
@@ -1263,8 +1260,7 @@ rtas_restore_regs:
        /* relocation is on at this point */
        REST_GPR(2, r1)                 /* Restore the TOC */
        REST_GPR(13, r1)                /* Restore paca */
-       REST_8GPRS(14, r1)              /* Restore the non-volatiles */
-       REST_10GPRS(22, r1)             /* ditto */
+       REST_NVGPRS(r1)                 /* Restore the non-volatiles */
 
        GET_PACA(r13)
 
@@ -1298,8 +1294,7 @@ _GLOBAL(enter_prom)
         */
        SAVE_GPR(2, r1)
        SAVE_GPR(13, r1)
-       SAVE_8GPRS(14, r1)
-       SAVE_10GPRS(22, r1)
+       SAVE_NVGPRS(r1)
        mfcr    r10
        mfmsr   r11
        std     r10,_CCR(r1)
@@ -1343,8 +1338,7 @@ _GLOBAL(enter_prom)
        /* Restore other registers */
        REST_GPR(2, r1)
        REST_GPR(13, r1)
-       REST_8GPRS(14, r1)
-       REST_10GPRS(22, r1)
+       REST_NVGPRS(r1)
        ld      r4,_CCR(r1)
        mtcr    r4