25 Feb
2019
25 Feb
'19
4:40 p.m.
On Mon, 25 Feb 2019 17:09:45 +0900 Masami Hiramatsu mhiramat@kernel.org wrote:
This should probably go with whatever effort makes nmi_uaccess_ok() available on all architectures. That being said, how about just making copy_from_user_nmi() work on all architectures, even if it just fails unconditionally on some of them?
I think even if we have copy_from_user_nmi(), we need something like nmi_uaccess_ok() because without it we can not correctly use __copy_from_user_inatomic()...
But wouldn't that just be part of the implementation of "copy_from_user_nmi()" as being in an NMI just assumes being inatomic?
-- Steve