powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly

Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h
index d58fc4e..a43c147 100644 (file)
--- a/arch/powerpc/include/asm/exception-64s.h
+++ b/arch/powerpc/include/asm/exception-64s.h
@@ -293,7 +293,7 @@ label##_hv:                                                         \
 
 #define RUNLATCH_ON                            \
 BEGIN_FTR_SECTION                              \
-       clrrdi  r3,r1,THREAD_SHIFT;             \
+       CURRENT_THREAD_INFO(r3, r1);            \
        ld      r4,TI_LOCAL_FLAGS(r3);          \
        andi.   r0,r4,_TLF_RUNLATCH;            \
        beql    ppc64_runlatch_on_trampoline;   \
@@ -332,7 +332,7 @@ label##_common:                                                     \
 #ifdef CONFIG_PPC_970_NAP
 #define FINISH_NAP                             \
 BEGIN_FTR_SECTION                              \
-       clrrdi  r11,r1,THREAD_SHIFT;            \
+       CURRENT_THREAD_INFO(r11, r1);           \
        ld      r9,TI_LOCAL_FLAGS(r11);         \
        andi.   r10,r9,_TLF_NAPPING;            \
        bnel    power4_fixup_nap;               \

diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h
index 68831e9..faf9352 100644 (file)
--- a/arch/powerpc/include/asm/thread_info.h
+++ b/arch/powerpc/include/asm/thread_info.h
@@ -22,6 +22,12 @@
 
 #define THREAD_SIZE            (1 << THREAD_SHIFT)
 
+#ifdef CONFIG_PPC64
+#define CURRENT_THREAD_INFO(dest, sp)  clrrdi dest, sp, THREAD_SHIFT
+#else
+#define CURRENT_THREAD_INFO(dest, sp)  rlwinm dest, sp, 0, 0, 31-THREAD_SHIFT
+#endif
+
 #ifndef __ASSEMBLY__
 #include <linux/cache.h>
 #include <asm/processor.h>

diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index ba3aeb4..bad42e3 100644 (file)
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -92,7 +92,7 @@ crit_transfer_to_handler:
        mfspr   r8,SPRN_SPRG_THREAD
        lwz     r0,KSP_LIMIT(r8)
        stw     r0,SAVED_KSP_LIMIT(r11)
-       rlwimi  r0,r1,0,0,(31-THREAD_SHIFT)
+       CURRENT_THREAD_INFO(r0, r1)
        stw     r0,KSP_LIMIT(r8)
        /* fall through */
 #endif
@@ -112,7 +112,7 @@ crit_transfer_to_handler:
        mfspr   r8,SPRN_SPRG_THREAD
        lwz     r0,KSP_LIMIT(r8)
        stw     r0,saved_ksp_limit@l(0)
-       rlwimi  r0,r1,0,0,(31-THREAD_SHIFT)
+       CURRENT_THREAD_INFO(r0, r1)
        stw     r0,KSP_LIMIT(r8)
        /* fall through */
 #endif
@@ -158,7 +158,7 @@ transfer_to_handler:
        tophys(r11,r11)
        addi    r11,r11,global_dbcr0@l
 #ifdef CONFIG_SMP
-       rlwinm  r9,r1,0,0,(31-THREAD_SHIFT)
+       CURRENT_THREAD_INFO(r9, r1)
        lwz     r9,TI_CPU(r9)
        slwi    r9,r9,3
        add     r11,r11,r9
@@ -179,7 +179,7 @@ transfer_to_handler:
        ble-    stack_ovf               /* then the kernel stack overflowed */
 5:
 #if defined(CONFIG_6xx) || defined(CONFIG_E500)
-       rlwinm  r9,r1,0,0,31-THREAD_SHIFT
+       CURRENT_THREAD_INFO(r9, r1)
        tophys(r9,r9)                   /* check local flags */
        lwz     r12,TI_LOCAL_FLAGS(r9)
        mtcrf   0x01,r12
@@ -333,7 +333,7 @@ _GLOBAL(DoSyscall)
        mtmsr   r11
 1:
 #endif /* CONFIG_TRACE_IRQFLAGS */
-       rlwinm  r10,r1,0,0,(31-THREAD_SHIFT)    /* current_thread_info() */
+       CURRENT_THREAD_INFO(r10, r1)
        lwz     r11,TI_FLAGS(r10)
        andi.   r11,r11,_TIF_SYSCALL_T_OR_A
        bne-    syscall_dotrace
@@ -354,7 +354,7 @@ ret_from_syscall:
        bl      do_show_syscall_exit
 #endif
        mr      r6,r3
-       rlwinm  r12,r1,0,0,(31-THREAD_SHIFT)    /* current_thread_info() */
+       CURRENT_THREAD_INFO(r12, r1)
        /* disable interrupts so current_thread_info()->flags can't change */
        LOAD_MSR_KERNEL(r10,MSR_KERNEL) /* doesn't include MSR_EE */
        /* Note: We don't bother telling lockdep about it */
@@ -815,7 +815,7 @@ ret_from_except:
 
 user_exc_return:               /* r10 contains MSR_KERNEL here */
        /* Check current_thread_info()->flags */
-       rlwinm  r9,r1,0,0,(31-THREAD_SHIFT)
+       CURRENT_THREAD_INFO(r9, r1)
        lwz     r9,TI_FLAGS(r9)
        andi.   r0,r9,_TIF_USER_WORK_MASK
        bne     do_work
@@ -835,7 +835,7 @@ restore_user:
 /* N.B. the only way to get here is from the beq following ret_from_except. */
 resume_kernel:
        /* check current_thread_info->preempt_count */
-       rlwinm  r9,r1,0,0,(31-THREAD_SHIFT)
+       CURRENT_THREAD_INFO(r9, r1)
        lwz     r0,TI_PREEMPT(r9)
        cmpwi   0,r0,0          /* if non-zero, just restore regs and return */
        bne     restore
@@ -852,7 +852,7 @@ resume_kernel:
        bl      trace_hardirqs_off
 #endif
 1:     bl      preempt_schedule_irq
-       rlwinm  r9,r1,0,0,(31-THREAD_SHIFT)
+       CURRENT_THREAD_INFO(r9, r1)
        lwz     r3,TI_FLAGS(r9)
        andi.   r0,r3,_TIF_NEED_RESCHED
        bne-    1b
@@ -1122,7 +1122,7 @@ ret_from_debug_exc:
        lwz     r10,SAVED_KSP_LIMIT(r1)
        stw     r10,KSP_LIMIT(r9)
        lwz     r9,THREAD_INFO-THREAD(r9)
-       rlwinm  r10,r1,0,0,(31-THREAD_SHIFT)
+       CURRENT_THREAD_INFO(r10, r1)
        lwz     r10,TI_PREEMPT(r10)
        stw     r10,TI_PREEMPT(r9)
        RESTORE_xSRR(SRR0,SRR1);
@@ -1156,7 +1156,7 @@ load_dbcr0:
        lis     r11,global_dbcr0@ha
        addi    r11,r11,global_dbcr0@l
 #ifdef CONFIG_SMP
-       rlwinm  r9,r1,0,0,(31-THREAD_SHIFT)
+       CURRENT_THREAD_INFO(r9, r1)
        lwz     r9,TI_CPU(r9)
        slwi    r9,r9,3
        add     r11,r11,r9
@@ -1197,7 +1197,7 @@ recheck:
        LOAD_MSR_KERNEL(r10,MSR_KERNEL)
        SYNC
        MTMSRD(r10)             /* disable interrupts */
-       rlwinm  r9,r1,0,0,(31-THREAD_SHIFT)
+       CURRENT_THREAD_INFO(r9, r1)
        lwz     r9,TI_FLAGS(r9)
        andi.   r0,r9,_TIF_NEED_RESCHED
        bne-    do_resched

diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index cf38a17..4b01a25 100644 (file)
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -146,7 +146,7 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR)
        REST_2GPRS(7,r1)
        addi    r9,r1,STACK_FRAME_OVERHEAD
 #endif
-       clrrdi  r11,r1,THREAD_SHIFT
+       CURRENT_THREAD_INFO(r11, r1)
        ld      r10,TI_FLAGS(r11)
        andi.   r11,r10,_TIF_SYSCALL_T_OR_A
        bne-    syscall_dotrace
@@ -181,7 +181,7 @@ syscall_exit:
        bl      .do_show_syscall_exit
        ld      r3,RESULT(r1)
 #endif
-       clrrdi  r12,r1,THREAD_SHIFT
+       CURRENT_THREAD_INFO(r12, r1)
 
        ld      r8,_MSR(r1)
 #ifdef CONFIG_PPC_BOOK3S
@@ -260,7 +260,7 @@ syscall_dotrace:
        ld      r7,GPR7(r1)
        ld      r8,GPR8(r1)
        addi    r9,r1,STACK_FRAME_OVERHEAD
-       clrrdi  r10,r1,THREAD_SHIFT
+       CURRENT_THREAD_INFO(r10, r1)
        ld      r10,TI_FLAGS(r10)
        b       .Lsyscall_dotrace_cont
 
@@ -500,7 +500,7 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_1T_SEGMENT)
 2:
 #endif /* !CONFIG_PPC_BOOK3S */
 
-       clrrdi  r7,r8,THREAD_SHIFT      /* base of new stack */
+       CURRENT_THREAD_INFO(r7, r8)  /* base of new stack */
        /* Note: this uses SWITCH_FRAME_SIZE rather than INT_FRAME_SIZE
           because we don't need to leave the 288-byte ABI gap at the
           top of the kernel stack. */
@@ -559,7 +559,7 @@ _GLOBAL(ret_from_except_lite)
        mtmsrd  r10,1             /* Update machine state */
 #endif /* CONFIG_PPC_BOOK3E */
 
-       clrrdi  r9,r1,THREAD_SHIFT      /* current_thread_info() */
+       CURRENT_THREAD_INFO(r9, r1)
        ld      r3,_MSR(r1)
        ld      r4,TI_FLAGS(r9)
        andi.   r3,r3,MSR_PR
@@ -602,7 +602,7 @@ resume_kernel:
 1:     bl      .preempt_schedule_irq
 
        /* Re-test flags and eventually loop */
-       clrrdi  r9,r1,THREAD_SHIFT
+       CURRENT_THREAD_INFO(r9, r1)
        ld      r4,TI_FLAGS(r9)
        andi.   r0,r4,_TIF_NEED_RESCHED
        bne     1b

diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index ecba705..98be7f0 100644 (file)
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -222,7 +222,7 @@ exc_##n##_bad_stack:                                                            \
  * interrupts happen before the wait instruction.
  */
 #define CHECK_NAPPING()                                                        \
-       clrrdi  r11,r1,THREAD_SHIFT;                                    \
+       CURRENT_THREAD_INFO(r11, r1);                                   \
        ld      r10,TI_LOCAL_FLAGS(r11);                                \
        andi.   r9,r10,_TLF_NAPPING;                                    \
        beq+    1f;                                                     \

diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 1c06d29..8ad3468 100644 (file)
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -851,7 +851,7 @@ BEGIN_FTR_SECTION
        bne-    do_ste_alloc            /* If so handle it */
 END_MMU_FTR_SECTION_IFCLR(MMU_FTR_SLB)
 
-       clrrdi  r11,r1,THREAD_SHIFT
+       CURRENT_THREAD_INFO(r11, r1)
        lwz     r0,TI_PREEMPT(r11)      /* If we're in an "NMI" */
        andis.  r0,r0,NMI_MASK@h        /* (i.e. an irq when soft-disabled) */
        bne     77f                     /* then don't call hash_page now */

diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index 1f4434a..7e7bd88 100644 (file)
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -192,7 +192,7 @@ _ENTRY(__early_start)
        li      r0,0
        stwu    r0,THREAD_SIZE-STACK_FRAME_OVERHEAD(r1)
 
-       rlwinm  r22,r1,0,0,31-THREAD_SHIFT      /* current thread_info */
+       CURRENT_THREAD_INFO(r22, r1)
        stw     r24, TI_CPU(r22)
 
        bl      early_init

diff --git a/arch/powerpc/kernel/idle_6xx.S b/arch/powerpc/kernel/idle_6xx.S
index 15c611d..1686916 100644 (file)
--- a/arch/powerpc/kernel/idle_6xx.S
+++ b/arch/powerpc/kernel/idle_6xx.S
@@ -135,7 +135,7 @@ BEGIN_FTR_SECTION
        DSSALL
        sync
 END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
-       rlwinm  r9,r1,0,0,31-THREAD_SHIFT       /* current thread_info */
+       CURRENT_THREAD_INFO(r9, r1)
        lwz     r8,TI_LOCAL_FLAGS(r9)   /* set napping bit */
        ori     r8,r8,_TLF_NAPPING      /* so when we take an exception */
        stw     r8,TI_LOCAL_FLAGS(r9)   /* it will return to our caller */
@@ -158,7 +158,7 @@ _GLOBAL(power_save_ppc32_restore)
        stw     r9,_NIP(r11)            /* make it do a blr */
 
 #ifdef CONFIG_SMP
-       rlwinm  r12,r11,0,0,31-THREAD_SHIFT
+       CURRENT_THREAD_INFO(r12, r11)
        lwz     r11,TI_CPU(r12)         /* get cpu number * 4 */
        slwi    r11,r11,2
 #else

diff --git a/arch/powerpc/kernel/idle_book3e.S b/arch/powerpc/kernel/idle_book3e.S
index ff007b5..4c7cb40 100644 (file)
--- a/arch/powerpc/kernel/idle_book3e.S
+++ b/arch/powerpc/kernel/idle_book3e.S
@@ -60,7 +60,7 @@ _GLOBAL(book3e_idle)
 1:     /* Let's set the _TLF_NAPPING flag so interrupts make us return
         * to the right spot
        */
-       clrrdi  r11,r1,THREAD_SHIFT
+       CURRENT_THREAD_INFO(r11, r1)
        ld      r10,TI_LOCAL_FLAGS(r11)
        ori     r10,r10,_TLF_NAPPING
        std     r10,TI_LOCAL_FLAGS(r11)

diff --git a/arch/powerpc/kernel/idle_e500.S b/arch/powerpc/kernel/idle_e500.S
index 4f0ab85..1544866 100644 (file)
--- a/arch/powerpc/kernel/idle_e500.S
+++ b/arch/powerpc/kernel/idle_e500.S
@@ -21,7 +21,7 @@
        .text
 
 _GLOBAL(e500_idle)
-       rlwinm  r3,r1,0,0,31-THREAD_SHIFT       /* current thread_info */
+       CURRENT_THREAD_INFO(r3, r1)
        lwz     r4,TI_LOCAL_FLAGS(r3)   /* set napping bit */
        ori     r4,r4,_TLF_NAPPING      /* so when we take an exception */
        stw     r4,TI_LOCAL_FLAGS(r3)   /* it will return to our caller */
@@ -96,7 +96,7 @@ _GLOBAL(power_save_ppc32_restore)
        stw     r9,_NIP(r11)            /* make it do a blr */
 
 #ifdef CONFIG_SMP
-       rlwinm  r12,r1,0,0,31-THREAD_SHIFT
+       CURRENT_THREAD_INFO(r12, r1)
        lwz     r11,TI_CPU(r12)         /* get cpu number * 4 */
        slwi    r11,r11,2
 #else

diff --git a/arch/powerpc/kernel/idle_power4.S b/arch/powerpc/kernel/idle_power4.S
index 2c71b0f..e3edaa1 100644 (file)
--- a/arch/powerpc/kernel/idle_power4.S
+++ b/arch/powerpc/kernel/idle_power4.S
@@ -59,7 +59,7 @@ BEGIN_FTR_SECTION
        DSSALL
        sync
 END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
-       clrrdi  r9,r1,THREAD_SHIFT      /* current thread_info */
+       CURRENT_THREAD_INFO(r9, r1)
        ld      r8,TI_LOCAL_FLAGS(r9)   /* set napping bit */
        ori     r8,r8,_TLF_NAPPING      /* so when we take an exception */
        std     r8,TI_LOCAL_FLAGS(r9)   /* it will return to our caller */

diff --git a/arch/powerpc/kernel/iommu.c.rej b/arch/powerpc/kernel/iommu.c.rej
new file mode 100644 (file)
index 0000000..9d10d34
--- /dev/null
+++ b/arch/powerpc/kernel/iommu.c.rej
@@ -0,0 +1,22 @@
+--- arch/powerpc/kernel/iommu.c        2012-06-08 09:01:02.785709100 +1000
++++ arch/powerpc/kernel/iommu.c        2012-06-08 09:01:07.489784856 +1000
+@@ -33,7 +33,9 @@
+ #include <linux/bitmap.h>
+ #include <linux/iommu-helper.h>
+ #include <linux/crash_dump.h>
++#include <linux/fault-inject.h>
+ #include <asm/io.h>
++#include <asm/vio.h>
+ #include <asm/prom.h>
+ #include <asm/iommu.h>
+ #include <asm/pci-bridge.h>
+@@ -171,6 +261,9 @@
+               return DMA_ERROR_CODE;
+       }
+ 
++      if (should_fail_iommu(dev))
++              return DMA_ERROR_CODE;
++
+       if (handle && *handle)
+               start = *handle;
+       else

diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 386d57f..407e293 100644 (file)
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -179,7 +179,7 @@ _GLOBAL(low_choose_750fx_pll)
        mtspr   SPRN_HID1,r4
 
        /* Store new HID1 image */
-       rlwinm  r6,r1,0,0,(31-THREAD_SHIFT)
+       CURRENT_THREAD_INFO(r6, r1)
        lwz     r6,TI_CPU(r6)
        slwi    r6,r6,2
        addis   r6,r6,nap_save_hid1@ha
@@ -699,7 +699,7 @@ _GLOBAL(kernel_thread)
 #ifdef CONFIG_SMP
 _GLOBAL(start_secondary_resume)
        /* Reset stack */
-       rlwinm  r1,r1,0,0,(31-THREAD_SHIFT)     /* current_thread_info() */
+       CURRENT_THREAD_INFO(r1, r1)
        addi    r1,r1,THREAD_SIZE-STACK_FRAME_OVERHEAD
        li      r3,0
        stw     r3,0(r1)                /* Zero the stack frame pointer */

diff --git a/arch/powerpc/kvm/bookehv_interrupts.S b/arch/powerpc/kvm/bookehv_interrupts.S
index 18cee4b..1685dc4 100644 (file)
--- a/arch/powerpc/kvm/bookehv_interrupts.S
+++ b/arch/powerpc/kvm/bookehv_interrupts.S
@@ -160,11 +160,7 @@
        mtspr   SPRN_EPLC, r8
 
        /* disable preemption, so we are sure we hit the fixup handler */
-#ifdef CONFIG_PPC64
-       clrrdi  r8,r1,THREAD_SHIFT
-#else
-       rlwinm  r8,r1,0,0,31-THREAD_SHIFT       /* current thread_info */
-#endif
+       CURRENT_THREAD_INFO(r8, r1)
        li      r7, 1
        stw     r7, TI_PREEMPT(r8)
 

diff --git a/arch/powerpc/mm/hash_low_32.S b/arch/powerpc/mm/hash_low_32.S
index b13d589..115347f 100644 (file)
--- a/arch/powerpc/mm/hash_low_32.S
+++ b/arch/powerpc/mm/hash_low_32.S
@@ -184,7 +184,7 @@ _GLOBAL(add_hash_page)
        add     r3,r3,r0                /* note create_hpte trims to 24 bits */
 
 #ifdef CONFIG_SMP
-       rlwinm  r8,r1,0,0,(31-THREAD_SHIFT) /* use cpu number to make tag */
+       CURRENT_THREAD_INFO(r8, r1)     /* use cpu number to make tag */
        lwz     r8,TI_CPU(r8)           /* to go in mmu_hash_lock */
        oris    r8,r8,12
 #endif /* CONFIG_SMP */
@@ -545,7 +545,7 @@ _GLOBAL(flush_hash_pages)
 #ifdef CONFIG_SMP
        addis   r9,r7,mmu_hash_lock@ha
        addi    r9,r9,mmu_hash_lock@l
-       rlwinm  r8,r1,0,0,(31-THREAD_SHIFT)
+       CURRENT_THREAD_INFO(r8, r1)
        add     r8,r8,r7
        lwz     r8,TI_CPU(r8)
        oris    r8,r8,9
@@ -639,7 +639,7 @@ _GLOBAL(flush_hash_patch_B)
  */
 _GLOBAL(_tlbie)
 #ifdef CONFIG_SMP
-       rlwinm  r8,r1,0,0,(31-THREAD_SHIFT)
+       CURRENT_THREAD_INFO(r8, r1)
        lwz     r8,TI_CPU(r8)
        oris    r8,r8,11
        mfmsr   r10
@@ -677,7 +677,7 @@ _GLOBAL(_tlbie)
  */
 _GLOBAL(_tlbia)
 #if defined(CONFIG_SMP)
-       rlwinm  r8,r1,0,0,(31-THREAD_SHIFT)
+       CURRENT_THREAD_INFO(r8, r1)
        lwz     r8,TI_CPU(r8)
        oris    r8,r8,10
        mfmsr   r10

diff --git a/arch/powerpc/sysdev/6xx-suspend.S b/arch/powerpc/sysdev/6xx-suspend.S
index 21cda08..cf48e9c 100644 (file)
--- a/arch/powerpc/sysdev/6xx-suspend.S
+++ b/arch/powerpc/sysdev/6xx-suspend.S
@@ -29,7 +29,7 @@ _GLOBAL(mpc6xx_enter_standby)
        ori     r5, r5, ret_from_standby@l
        mtlr    r5
 
-       rlwinm  r5, r1, 0, 0, 31-THREAD_SHIFT
+       CURRENT_THREAD_INFO(r5, r1)
        lwz     r6, TI_LOCAL_FLAGS(r5)
        ori     r6, r6, _TLF_SLEEPING
        stw     r6, TI_LOCAL_FLAGS(r5)