At 18:48 +0000 on 07 Feb (1486493293), Andrew Cooper wrote: > Until the IPI has completed, other processors might be running on this nested > p2m object. clear_domain_page() does not guarantee to make 8-byte atomic > updates, which means that a pagewalk on a remote processor might encounter a > partial update. > > This is currently safe as other issues prevents a nested p2m ever being shared > between two cpus (although this is contrary to the original plan). > > Setting p2m->np2m_base to P2M_BASE_EADDR before the IPI ensures that the IPI'd > processors won't continue to use the flushed mappings. > > While modifying this function, remove all the trailing whitespace and tweak > style in the affected areas. > > Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
Reviewed-by: Tim Deegan <t...@xen.org> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
