Messages in this thread Patch in this message | | | From | Gerd Hoffmann <> | Subject | [PATCH 2/2] sample/mdev/mbochs: add mbochs_kunmap_dmabuf | Date | Mon, 25 Jun 2018 08:44:52 +0200 |
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There is no default implementation for dma_buf_ops->unmap. So add a function unmapping the page, otherwise we'll leak them.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> --- samples/vfio-mdev/mbochs.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/samples/vfio-mdev/mbochs.c b/samples/vfio-mdev/mbochs.c index aa25cda21d..85ac603769 100644 --- a/samples/vfio-mdev/mbochs.c +++ b/samples/vfio-mdev/mbochs.c @@ -811,11 +811,18 @@ static void *mbochs_kmap_dmabuf(struct dma_buf *buf, unsigned long page_num) return kmap(page); } +static void mbochs_kunmap_dmabuf(struct dma_buf *buf, unsigned long page_num, + void *vaddr) +{ + kunmap(vaddr); +} + static struct dma_buf_ops mbochs_dmabuf_ops = { .map_dma_buf = mbochs_map_dmabuf, .unmap_dma_buf = mbochs_unmap_dmabuf, .release = mbochs_release_dmabuf, .map = mbochs_kmap_dmabuf, + .unmap = mbochs_kunmap_dmabuf, .mmap = mbochs_mmap_dmabuf, }; -- 2.9.3
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