On 06/18/2014 02:44 AM, Qiaowei Ren wrote:
> +static __user void *task_get_bounds_dir(struct task_struct *tsk)
> +{
> + struct xsave_struct *xsave_buf;
> +
> + fpu_xsave(&tsk->thread.fpu);
> + xsave_buf = &(tsk->thread.fpu.state->xsave);
> + if (!(xsave_buf->bndcsr.cfg_reg_u & MPX_BNDCFG_ENABLE_FLAG))
> + return NULL;
> +
> + return (void __user *)(xsave_buf->bndcsr.cfg_reg_u &
> + MPX_BNDCFG_ADDR_MASK);
> +}
This spits out a warning on 32-bit:
arch/x86/kernel/mpx.c: In function ‘task_get_bounds_dir’:
arch/x86/kernel/mpx.c:21:9: warning: cast to pointer from integer of
different size [-Wint-to-pointer-cast]
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