>>> On 02.04.19 at 21:57, <andrew.coop...@citrix.com> wrote: > All methods of querying the online state of a CPU are racy without the hotplug > lock held, which can lead to a TOCTOU race trying to online or offline CPUs. > > Distinguish this case with -EEXIST rather than -EINVAL, so the caller can take > other actions if necessary. > > While adjusting this, rework the code slightly to fold the exit paths, which > results in a minor reduction in compiled code size. > > Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
Reviewed-by: Jan Beulich <jbeul...@suse.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
