On Tue, Jun 13, 2017 at 10:59:07AM -0700, Dave Hansen wrote: > On 06/13/2017 10:56 AM, Michael S. Tsirkin wrote: > >> +/* The size of one page_bmap used to record inflated/deflated pages. */ > >> +#define VIRTIO_BALLOON_PAGE_BMAP_SIZE (8 * PAGE_SIZE) > > At this size, you probably want alloc_pages to avoid kmalloc > > overhead. > > For slub, at least, kmalloc() just calls alloc_pages() basically > directly. There's virtually no overhead. > > OK then. -- MST
