Messages in this thread | | | Subject | Re: [PATCH 1/3] x86/paravirt: Make read_cr2() CALLEE_SAVE | From | Juergen Gross <> | Date | Wed, 3 Jul 2019 16:12:57 +0200 |
| |
On 03.07.19 12:27, root wrote: > The one paravirt read_cr2() implementation (Xen) is actually quite > trivial and doesn't need to clobber anything other than the return > register. By making read_cr2() CALLEE_SAVE we avoid all the PUSH/POP > nonsense and allow more convenient use from assembly. > > Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Juergen Gross <jgross@suse.com>
Juergen
| |