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    Subject[PATCH v4 15/18] vdpa_sim: use kvmalloc to allocate vdpasim->buffer
    Date
    The next patch will make the buffer size configurable from each
    device.
    Since the buffer could be larger than a page, we use kvmalloc()
    instead of kmalloc().

    Acked-by: Jason Wang <jasowang@redhat.com>
    Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
    ---
    drivers/vdpa/vdpa_sim/vdpa_sim.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
    index 19ff5e352782..87529899033a 100644
    --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
    +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
    @@ -418,7 +418,7 @@ static struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr)
    if (!vdpasim->iommu)
    goto err_iommu;

    - vdpasim->buffer = kmalloc(PAGE_SIZE, GFP_KERNEL);
    + vdpasim->buffer = kvmalloc(PAGE_SIZE, GFP_KERNEL);
    if (!vdpasim->buffer)
    goto err_iommu;

    @@ -707,7 +707,7 @@ static void vdpasim_free(struct vdpa_device *vdpa)
    struct vdpasim *vdpasim = vdpa_to_sim(vdpa);

    cancel_work_sync(&vdpasim->work);
    - kfree(vdpasim->buffer);
    + kvfree(vdpasim->buffer);
    if (vdpasim->iommu)
    vhost_iotlb_free(vdpasim->iommu);
    kfree(vdpasim->vqs);
    --
    2.26.2
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