On Mon, Nov 16, 2020 at 7:23 AM Juergen Gross <jgr...@suse.com> wrote: > > SWAPGS is used only for interrupts coming from user mode or for > returning to user mode. So there is no reason to use the PARAVIRT > framework, as it can easily be replaced by an ALTERNATIVE depending > on X86_FEATURE_XENPV. > > There are several instances using the PV-aware SWAPGS macro in paths > which are never executed in a Xen PV guest. Replace those with the > plain swapgs instruction. For SWAPGS_UNSAFE_STACK the same applies.
Acked-by: Andy Lutomirski <l...@kernel.org>
