powerpc: Add the ability to save VSX without giving it up

[mirror_ubuntu-zesty-kernel.git] / arch / powerpc / kernel / vector.S

diff --git a/arch/powerpc/kernel/vector.S b/arch/powerpc/kernel/vector.S
index 51b0c175ea8ce400a5fb7cbf6d103e9e3f41fdb6..1c2e7a343bf5f195cfe4b53c37171056b0554a38 100644 (file)
--- a/arch/powerpc/kernel/vector.S
+++ b/arch/powerpc/kernel/vector.S
@@ -151,23 +151,6 @@ _GLOBAL(load_up_vsx)
        std     r12,_MSR(r1)
        b       fast_exception_return
 
-/*
- * __giveup_vsx(tsk)
- * Disable VSX for the task given as the argument.
- * Does NOT save vsx registers.
- */
-_GLOBAL(__giveup_vsx)
-       addi    r3,r3,THREAD            /* want THREAD of task */
-       ld      r5,PT_REGS(r3)
-       cmpdi   0,r5,0
-       beq     1f
-       ld      r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-       lis     r3,MSR_VSX@h
-       andc    r4,r4,r3                /* disable VSX for previous task */
-       std     r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-1:
-       blr
-
 #endif /* CONFIG_VSX */