On 10.03.2020 19:06, Igor Druzhinin wrote: > During CPU down operation RCU callbacks are scheduled to finish > off some actions later as soon as CPU is fully dead (the same applies > to CPU up operation in case error path is taken). If in the same grace > period another CPU up operation is performed on the same CPU, RCU callback > will be called later on a CPU in a potentially wrong (already up again > instead of still being down) state leading to eventual state inconsistency > and/or crash. > > In order to avoid it - flush RCU callbacks explicitly before starting the > next CPU up/down operation. > > Reviewed-by: Juergen Gross <jgr...@suse.com> > Signed-off-by: Igor Druzhinin <igor.druzhi...@citrix.com>
(Nit: These preferably would come in inverse order.) Reviewed-by: Jan Beulich <jbeul...@suse.com> Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
