Re: clean up and streamline probe_kernel_* and friends v4

On Thu, May 21, 2020 at 8:23 AM Christoph Hellwig [off-list ref] wrote:

this series start cleaning up the safe kernel and user memory probing
helpers in mm/maccess.c, and then allows architectures to implement
the kernel probing without overriding the address space limit and
temporarily allowing access to user memory.  It then switches x86
over to this new mechanism by reusing the unsafe_* uaccess logic.

I could not see anything to object to in this version. So Ack from me,
but obviously I'm hoping others will try to read it through as well.

              Linus