x86/callback.c: slightly change {un,}register_guest_nmi_callback
authorWei Liu <wei.liu2@citrix.com>
Mon, 26 Jun 2017 15:06:18 +0000 (16:06 +0100)
committerWei Liu <wei.liu2@citrix.com>
Wed, 28 Jun 2017 10:56:52 +0000 (11:56 +0100)
commit093973bd772ea33f7d34b3861732cd2060a1b75c
treea04988ffa0643466794eb4721cc218ddd75ee186
parent635af64d4f449cbbcc24f0abeef5095cc479e9b4
x86/callback.c: slightly change {un,}register_guest_nmi_callback

Make register_guest_nmi_callback return int and make
unregister_guest_nmi_callback void. Adjust the callers where
necessary.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
xen/arch/x86/pv/callback.c