On Mon, Feb 22, 2016 at 11:00 AM, Yu-cheng Yu <[email protected]> wrote: > XSAVES uses compacted format and is a kernel instruction. The kernel > should use standard-format, non-supervisor state data for PTRACE. >
> +/* > + * Convert from kernel XSAVES compacted format to standard format and copy > + * to a ptrace buffer. It supports partial copy but pos always starts from > + * zero. This is called from xstateregs_get() and there we check the cpu > + * has XSAVES. > + */ > +int copyout_from_xsaves(unsigned int pos, unsigned int count, void *kbuf, > + void __user *ubuf, const struct xregs_state *xsave) Now that you've written this code, can it be shared with the signal handling code? --Andy --Andy
