4 files changed, 5 insertions, 111 deletions

diff --git a/arch/ppc64/kernel/align.c b/arch/ppc64/kernel/align.c
index 330e7ef81427..256d5b592aa1 100644
--- a/arch/ppc64/kernel/align.c
+++ b/arch/ppc64/kernel/align.c
@@ -313,7 +313,7 @@ fix_alignment(struct pt_regs *regs)
                                 /* Doing stfs, have to convert to single */
                                 preempt_disable();
                                 enable_kernel_fp();
-                                cvt_df(&current->thread.fpr[reg], (float *)&data.v[4], &current->thread.fpscr);
+                                cvt_df(&current->thread.fpr[reg], (float *)&data.v[4], &current->thread);
                                 disable_kernel_fp();
                                 preempt_enable();
                         }
@@ -349,7 +349,7 @@ fix_alignment(struct pt_regs *regs)
                                 /* Doing lfs, have to convert to double */
                                 preempt_disable();
                                 enable_kernel_fp();
-                                cvt_fd((float *)&data.v[4], &current->thread.fpr[reg], &current->thread.fpscr);
+                                cvt_fd((float *)&data.v[4], &current->thread.fpr[reg], &current->thread);
                                 disable_kernel_fp();
                                 preempt_enable();
                         }
diff --git a/arch/ppc64/kernel/head.S b/arch/ppc64/kernel/head.S
index f58af9c246cb..929f9f42cf7a 100644
--- a/arch/ppc64/kernel/head.S
+++ b/arch/ppc64/kernel/head.S
@@ -81,7 +81,7 @@ _stext:
 _GLOBAL(__start)
         /* NOP this out unconditionally */
 BEGIN_FTR_SECTION
-        b .__start_initialization_multiplatform
+        b       .__start_initialization_multiplatform
 END_FTR_SECTION(0, 1)
 #endif /* CONFIG_PPC_MULTIPLATFORM */
 
@@ -747,6 +747,7 @@ bad_stack:
  * any task or sent any task a signal, you should use
  * ret_from_except or ret_from_except_lite instead of this.
  */
+        .globl  fast_exception_return
 fast_exception_return:
         ld      r12,_MSR(r1)
         ld      r11,_NIP(r1)
@@ -858,62 +859,6 @@ fp_unavailable_common:
         bl      .kernel_fp_unavailable_exception
         BUG_OPCODE
 
-/*
- * load_up_fpu(unused, unused, tsk)
- * Disable FP for the task which had the FPU previously,
- * and save its floating-point registers in its thread_struct.
- * Enables the FPU for use in the kernel on return.
- * On SMP we know the fpu is free, since we give it up every
- * switch (ie, no lazy save of the FP registers).
- * On entry: r13 == 'current' && last_task_used_math != 'current'
- */
-_STATIC(load_up_fpu)
-        mfmsr   r5                      /* grab the current MSR */
-        ori     r5,r5,MSR_FP
-        mtmsrd  r5                      /* enable use of fpu now */
-        isync
-/*
- * For SMP, we don't do lazy FPU switching because it just gets too
- * horrendously complex, especially when a task switches from one CPU
- * to another.  Instead we call giveup_fpu in switch_to.
- *
- */
-#ifndef CONFIG_SMP
-        ld      r3,last_task_used_math@got(r2)
-        ld      r4,0(r3)
-        cmpdi   0,r4,0
-        beq     1f
-        /* Save FP state to last_task_used_math's THREAD struct */
-        addi    r4,r4,THREAD
-        SAVE_32FPRS(0, r4)
-        mffs    fr0
-        stfd    fr0,THREAD_FPSCR(r4)
-        /* Disable FP for last_task_used_math */
-        ld      r5,PT_REGS(r4)
-        ld      r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-        li      r6,MSR_FP|MSR_FE0|MSR_FE1
-        andc    r4,r4,r6
-        std     r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-1:
-#endif /* CONFIG_SMP */
-        /* enable use of FP after return */
-        ld      r4,PACACURRENT(r13)
-        addi    r5,r4,THREAD            /* Get THREAD */
-        ld      r4,THREAD_FPEXC_MODE(r5)
-        ori     r12,r12,MSR_FP
-        or      r12,r12,r4
-        std     r12,_MSR(r1)
-        lfd     fr0,THREAD_FPSCR(r5)
-        mtfsf   0xff,fr0
-        REST_32FPRS(0, r5)
-#ifndef CONFIG_SMP
-        /* Update last_task_used_math to 'current' */
-        subi    r4,r5,THREAD            /* Back to 'current' */
-        std     r4,0(r3)
-#endif /* CONFIG_SMP */
-        /* restore registers and return */
-        b       fast_exception_return
-
         .align  7
         .globl altivec_unavailable_common
 altivec_unavailable_common:
diff --git a/arch/ppc64/kernel/misc.S b/arch/ppc64/kernel/misc.S
index a33448c2bd91..9cae3d5c40e6 100644
--- a/arch/ppc64/kernel/misc.S
+++ b/arch/ppc64/kernel/misc.S
@@ -451,25 +451,6 @@ _GLOBAL(_outsl_ns)
         sync
         blr     
 
-
-_GLOBAL(cvt_fd)
-        lfd     0,0(r5)         /* load up fpscr value */
-        mtfsf   0xff,0
-        lfs     0,0(r3)
-        stfd    0,0(r4)
-        mffs    0               /* save new fpscr value */
-        stfd    0,0(r5)
-        blr
-
-_GLOBAL(cvt_df)
-        lfd     0,0(r5)         /* load up fpscr value */
-        mtfsf   0xff,0
-        lfd     0,0(r3)
-        stfs    0,0(r4)
-        mffs    0               /* save new fpscr value */
-        stfd    0,0(r5)
-        blr
-
 /*
  * identify_cpu and calls setup_cpu
  * In:  r3 = base of the cpu_specs array
@@ -655,38 +636,6 @@ _GLOBAL(disable_kernel_fp)
         isync
         blr
 
-/*
- * giveup_fpu(tsk)
- * Disable FP for the task given as the argument,
- * and save the floating-point registers in its thread_struct.
- * Enables the FPU for use in the kernel on return.
- */
-_GLOBAL(giveup_fpu)
-        mfmsr   r5
-        ori     r5,r5,MSR_FP
-        mtmsrd  r5                      /* enable use of fpu now */
-        isync
-        cmpdi   0,r3,0
-        beqlr-                          /* if no previous owner, done */
-        addi    r3,r3,THREAD            /* want THREAD of task */
-        ld      r5,PT_REGS(r3)
-        cmpdi   0,r5,0
-        SAVE_32FPRS(0, r3)
-        mffs    fr0
-        stfd    fr0,THREAD_FPSCR(r3)
-        beq     1f
-        ld      r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-        li      r3,MSR_FP|MSR_FE0|MSR_FE1
-        andc    r4,r4,r3                /* disable FP for previous task */
-        std     r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-1:
-#ifndef CONFIG_SMP
-        li      r5,0
-        ld      r4,last_task_used_math@got(r2)
-        std     r5,0(r4)
-#endif /* CONFIG_SMP */
-        blr
-
 #ifdef CONFIG_ALTIVEC
 
 #if 0 /* this has no callers for now */
diff --git a/arch/ppc64/kernel/signal.c b/arch/ppc64/kernel/signal.c
index 347112cca3c0..ec9d0984b6a0 100644
--- a/arch/ppc64/kernel/signal.c
+++ b/arch/ppc64/kernel/signal.c
@@ -133,7 +133,7 @@ static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
         flush_fp_to_thread(current);
 
         /* Make sure signal doesn't get spurrious FP exceptions */
-        current->thread.fpscr = 0;
+        current->thread.fpscr.val = 0;
 
 #ifdef CONFIG_ALTIVEC
         err |= __put_user(v_regs, &sc->v_regs);