Commit 1883e8fc authored by Cornelia Huck's avatar Cornelia Huck
Browse files

vfio-ap: flag as compatible with balloon 



vfio-ap devices do not pin any pages in the host. Therefore, they
are compatible with memory ballooning.

Flag them as compatible, so both vfio-ap and a balloon can be
used simultaneously.

Cc: qemu-stable@nongnu.org
Acked-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Tested-by: default avatarTony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: default avatarHalil Pasic <pasic@linux.ibm.com>
Signed-off-by: default avatarCornelia Huck <cohuck@redhat.com>
parent 9bc9d3d1

hw/vfio/ap.c

+8 −0
Original line number Diff line number Diff line
@@ -104,6 +104,14 @@ static void vfio_ap_realize(DeviceState *dev, Error **errp) 
    vapdev->vdev.name = g_strdup_printf("%s", mdevid);

    vapdev->vdev.dev = dev;



    /*

     * vfio-ap devices operate in a way compatible with

     * memory ballooning, as no pages are pinned in the host.

     * This needs to be set before vfio_get_device() for vfio common to

     * handle the balloon inhibitor.

     */

    vapdev->vdev.balloon_allowed = true;



    ret = vfio_get_device(vfio_group, mdevid, &vapdev->vdev, &local_err);

    if (ret) {

        goto out_get_dev_err;