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Re: [Qemu-devel] [PATCH v11 3/6] virtio-balloon: VIRTIO_BALLOON_F_PAGE_C
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From: |
Michael S. Tsirkin |
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Subject: |
Re: [Qemu-devel] [PATCH v11 3/6] virtio-balloon: VIRTIO_BALLOON_F_PAGE_CHUNKS |
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Date: |
Tue, 13 Jun 2017 21:55:05 +0300 |
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
[Qemu-devel] [PATCH v11 5/6] mm: export symbol of next_zone and first_online_pgdat, Wei Wang, 2017/06/09
[Qemu-devel] [PATCH v11 3/6] virtio-balloon: VIRTIO_BALLOON_F_PAGE_CHUNKS, Wei Wang, 2017/06/09
[Qemu-devel] [PATCH v11 6/6] virtio-balloon: VIRTIO_BALLOON_F_CMD_VQ, Wei Wang, 2017/06/09