On 06.02.20 08:47, Michael S. Tsirkin wrote: > Make sure, at build time, that pfn array is big enough to hold a single > page. It happens to be true since the PAGE_SHIFT value at the moment is > 20, which is 1M - exactly 256 4K balloon pages. > > Signed-off-by: Michael S. Tsirkin <[email protected]> > --- > drivers/virtio/virtio_balloon.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > index 8e400ece9273..2457c54b6185 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -158,6 +158,8 @@ static void set_page_pfns(struct virtio_balloon *vb, > { > unsigned int i; > > + BUILD_BUG_ON(VIRTIO_BALLOON_PAGES_PER_PAGE > > VIRTIO_BALLOON_ARRAY_PFNS_MAX); > + > /* > * Set balloon pfns pointing at this page. > * Note that the first pfn points at start of the page. >
Reviewed-by: David Hildenbrand <[email protected]> -- Thanks, David / dhildenb _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
