MIPS: Move cop2 save/restore to switch_to()

Move the common code for saving and restoring platform specific COP2
registers to switch_to(). This will make supporting new platforms (like
Netlogic XLP) easier.

The platform specific COP2 definitions are to be specified in
asm/processor.h and in asm/cop2.h.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: ddaney.cavm@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/5411/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 0 insertions, 27 deletions

diff --git a/arch/mips/kernel/octeon_switch.S b/arch/mips/kernel/octeon_switch.S
index 0e23343eb0a9..22e2aa1e8d37 100644
--- a/arch/mips/kernel/octeon_switch.S
+++ b/arch/mips/kernel/octeon_switch.S
@@ -40,33 +40,6 @@
         cpu_save_nonscratch a0
         LONG_S  ra, THREAD_REG31(a0)
 
-        /* check if we need to save COP2 registers */
-        PTR_L   t2, TASK_THREAD_INFO(a0)
-        LONG_L  t0, ST_OFF(t2)
-        bbit0   t0, 30, 1f
-
-        /* Disable COP2 in the stored process state */
-        li      t1, ST0_CU2
-        xor     t0, t1
-        LONG_S  t0, ST_OFF(t2)
-
-        /* Enable COP2 so we can save it */
-        mfc0    t0, CP0_STATUS
-        or      t0, t1
-        mtc0    t0, CP0_STATUS
-
-        /* Save COP2 */
-        daddu   a0, THREAD_CP2
-        jal octeon_cop2_save
-        dsubu   a0, THREAD_CP2
-
-        /* Disable COP2 now that we are done */
-        mfc0    t0, CP0_STATUS
-        li      t1, ST0_CU2
-        xor     t0, t1
-        mtc0    t0, CP0_STATUS
-
-1:
 #if CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0
         /* Check if we need to store CVMSEG state */
         mfc0    t0, $11,7       /* CvmMemCtl */