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2020 Apr 08
0
[RFC PATCH 15/26] x86/alternatives: Non-emulated text poking
On Tue, Apr 07, 2020 at 10:03:12PM -0700, Ankur Arora wrote: > +static void __maybe_unused sync_one(void) > +{ > + /* > + * We might be executing in NMI context, and so cannot use > + * IRET as a synchronizing instruction. > + * > + * We could use native_write_cr2() but that is not guaranteed > + * to work on Xen-PV -- it is emulated by Xen and might not > + * execut...