diff options
Diffstat (limited to 'arch/powerpc/lib/sstep.c')
| -rw-r--r-- | arch/powerpc/lib/sstep.c | 17 |
1 files changed, 2 insertions, 15 deletions
diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c index bb5c20d4ca91..45bda2520755 100644 --- a/arch/powerpc/lib/sstep.c +++ b/arch/powerpc/lib/sstep.c @@ -904,7 +904,7 @@ static nokprobe_inline int do_vsx_load(struct instruction_op *op, if (!address_ok(regs, ea, size) || copy_mem_in(mem, ea, size, regs)) return -EFAULT; - nr_vsx_regs = size / sizeof(__vector128); + nr_vsx_regs = max(1ul, size / sizeof(__vector128)); emulate_vsx_load(op, buf, mem, cross_endian); preempt_disable(); if (reg < 32) { @@ -951,7 +951,7 @@ static nokprobe_inline int do_vsx_store(struct instruction_op *op, if (!address_ok(regs, ea, size)) return -EFAULT; - nr_vsx_regs = size / sizeof(__vector128); + nr_vsx_regs = max(1ul, size / sizeof(__vector128)); preempt_disable(); if (reg < 32) { /* FP regs + extensions */ @@ -1401,10 +1401,6 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs, break; } - /* Following cases refer to regs->gpr[], so we need all regs */ - if (!FULL_REGS(regs)) - return -1; - rd = (word >> 21) & 0x1f; ra = (word >> 16) & 0x1f; rb = (word >> 11) & 0x1f; @@ -3086,15 +3082,6 @@ NOKPROBE_SYMBOL(analyse_instr); */ static nokprobe_inline int handle_stack_update(unsigned long ea, struct pt_regs *regs) { -#ifdef CONFIG_PPC32 - /* - * Check if we will touch kernel stack overflow - */ - if (ea - STACK_INT_FRAME_SIZE <= current->thread.ksp_limit) { - printk(KERN_CRIT "Can't kprobe this since kernel stack would overflow.\n"); - return -EINVAL; - } -#endif /* CONFIG_PPC32 */ /* * Check if we already set since that means we'll * lose the previous value. |