>>> On 26.05.17 at 13:14, <punit.agra...@arm.com> wrote: > populate_physmap() calls alloc_heap_pages() per requested > extent. alloc_heap_pages() invalidates the entire icache per > extent. During domain creation, the icache invalidations can be deffered > until all the extents have been allocated as there is no risk of > executing stale instructions from the icache. > > Introduce a new flag "MEMF_no_icache_flush" to be used to prevent > alloc_heap_pages() from performing icache maintenance operations. Use > the flag in populate_physmap() before the domain has been unpaused and > perform required icache maintenance function at the end of the > allocation. > > One concern is the lack of synchronisation around testing for > "creation_finished". But it seems, in practice the window where it is > out of sync should be small enough to not matter. > > Signed-off-by: Punit Agrawal <punit.agra...@arm.com> > Reviewed-by: Stefano Stabellini <sstabell...@kernel.org>
Acked-by: Jan Beulich <jbeul...@suse.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
