Re: [PATCH 1/2] alpha/ptrace: Record and handle the absence of switch_stack

Al Viro
2021-06-16T21:02:34Z

On Wed, Jun 16, 2021 at 03:57:19PM -0500, Eric W. Biederman wrote:

> Do you know if struct switch_stack or pt_regs is ever exposeed to
> usespace? They are both defined in arch/alpha/include/uapi/asm/ptrace.h
> which makes me think userspace must see those definitions somewhere.

They are exposed, but why mess with those in the first
place? thread_info->status is strictly thread-synchronous, so just
use it and be done with that...