virtio-balloon: VIRTIO_BALLOON_F_PAGE_POISON
to #26589565 commit 2e991629bcf55a43681aec1ee096eeb03cf81709 upstream The VIRTIO_BALLOON_F_PAGE_POISON feature bit is used to indicate if the guest is using page poisoning. Guest writes to the poison_val config field to tell host about the page poisoning value that is in use. Suggested-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NWei Wang <wei.w.wang@intel.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NYang Shi <yang.shi@linux.alibaba.com> Reviewed-by: NXunlei Pang <xlpang@linux.alibaba.com> Signed-off-by: NShile Zhang <shile.zhang@linux.alibaba.com>
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