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-rw-r--r--arch/powerpc/kernel/process.c34
1 files changed, 8 insertions, 26 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 5596397..d687e3f 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -28,7 +28,7 @@
#include <linux/init.h>
#include <linux/prctl.h>
#include <linux/init_task.h>
-#include <linux/module.h>
+#include <linux/export.h>
#include <linux/kallsyms.h>
#include <linux/mqueue.h>
#include <linux/hardirq.h>
@@ -96,6 +96,7 @@ void flush_fp_to_thread(struct task_struct *tsk)
preempt_enable();
}
}
+EXPORT_SYMBOL_GPL(flush_fp_to_thread);
void enable_kernel_fp(void)
{
@@ -145,6 +146,7 @@ void flush_altivec_to_thread(struct task_struct *tsk)
preempt_enable();
}
}
+EXPORT_SYMBOL_GPL(flush_altivec_to_thread);
#endif /* CONFIG_ALTIVEC */
#ifdef CONFIG_VSX
@@ -186,6 +188,7 @@ void flush_vsx_to_thread(struct task_struct *tsk)
preempt_enable();
}
}
+EXPORT_SYMBOL_GPL(flush_vsx_to_thread);
#endif /* CONFIG_VSX */
#ifdef CONFIG_SPE
@@ -213,6 +216,7 @@ void flush_spe_to_thread(struct task_struct *tsk)
#ifdef CONFIG_SMP
BUG_ON(tsk != current);
#endif
+ tsk->thread.spefscr = mfspr(SPRN_SPEFSCR);
giveup_spe(tsk);
}
preempt_enable();
@@ -482,28 +486,6 @@ struct task_struct *__switch_to(struct task_struct *prev,
new_thread = &new->thread;
old_thread = &current->thread;
-#if defined(CONFIG_PPC_BOOK3E_64)
- /* XXX Current Book3E code doesn't deal with kernel side DBCR0,
- * we always hold the user values, so we set it now.
- *
- * However, we ensure the kernel MSR:DE is appropriately cleared too
- * to avoid spurrious single step exceptions in the kernel.
- *
- * This will have to change to merge with the ppc32 code at some point,
- * but I don't like much what ppc32 is doing today so there's some
- * thinking needed there
- */
- if ((new_thread->dbcr0 | old_thread->dbcr0) & DBCR0_IDM) {
- u32 dbcr0;
-
- mtmsr(mfmsr() & ~MSR_DE);
- isync();
- dbcr0 = mfspr(SPRN_DBCR0);
- dbcr0 = (dbcr0 & DBCR0_EDM) | new_thread->dbcr0;
- mtspr(SPRN_DBCR0, dbcr0);
- }
-#endif /* CONFIG_PPC64_BOOK3E */
-
#ifdef CONFIG_PPC64
/*
* Collect processor utilization data per process
@@ -650,8 +632,10 @@ void show_regs(struct pt_regs * regs)
printbits(regs->msr, msr_bits);
printk(" CR: %08lx XER: %08lx\n", regs->ccr, regs->xer);
trap = TRAP(regs);
+ if ((regs->trap != 0xc00) && cpu_has_feature(CPU_FTR_CFAR))
+ printk("CFAR: "REG"\n", regs->orig_gpr3);
if (trap == 0x300 || trap == 0x600)
-#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
printk("DEAR: "REG", ESR: "REG"\n", regs->dar, regs->dsisr);
#else
printk("DAR: "REG", DSISR: %08lx\n", regs->dar, regs->dsisr);
@@ -823,8 +807,6 @@ void start_thread(struct pt_regs *regs, unsigned long start, unsigned long sp)
unsigned long load_addr = regs->gpr[2]; /* saved by ELF_PLAT_INIT */
#endif
- set_fs(USER_DS);
-
/*
* If we exec out of a kernel thread then thread.regs will not be
* set. Do it now.