On Mon, Nov 16, 2020 at 7:23 AM Juergen Gross <jgr...@suse.com> wrote: > > USERGS_SYSRET64 is used to return from a syscall via sysret, but > a Xen PV guest will nevertheless use the iret hypercall, as there > is no sysret PV hypercall defined. > > So instead of testing all the prerequisites for doing a sysret and > then mangling the stack for Xen PV again for doing an iret just use > the iret exit from the beginning. > > This can easily be done via an ALTERNATIVE like it is done for the > sysenter compat case already. > > While at it remove to stale sysret32 remnants.
s/to/the/
