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| author | Li Zhijian <lizhijian@cn.fujitsu.com> | 2020-08-27 11:58:55 +0800 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2020-09-04 10:12:56 +0200 |
| commit | eb398a54e33ab2ac9701839be9b660af3e50a32e (patch) | |
| tree | a620afa598519e5e6210c7724ff6956f591795f4 | |
| parent | 67a7bfe560a1bba59efab085cb3430f45176d382 (diff) | |
| download | qemu-eb398a54e33ab2ac9701839be9b660af3e50a32e.zip qemu-eb398a54e33ab2ac9701839be9b660af3e50a32e.tar.gz qemu-eb398a54e33ab2ac9701839be9b660af3e50a32e.tar.bz2 | |
virtio-gpu: fix unmap the already mapped items
we go here either (!(*iov)[i].iov_base) or (len != l), so we need to consider
to unmap the 'i'th item as well when the 'i'th item is not nil
CC: Li Qiang <liq3ea@gmail.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Message-id: 20200827035855.24354-1-lizhijian@cn.fujitsu.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
| -rw-r--r-- | hw/display/virtio-gpu.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index 5f0dd7c..90be4e3 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -646,9 +646,9 @@ int virtio_gpu_create_mapping_iov(VirtIOGPU *g, uint64_t a = le64_to_cpu(ents[i].addr); uint32_t l = le32_to_cpu(ents[i].length); hwaddr len = l; - (*iov)[i].iov_len = l; (*iov)[i].iov_base = dma_memory_map(VIRTIO_DEVICE(g)->dma_as, a, &len, DMA_DIRECTION_TO_DEVICE); + (*iov)[i].iov_len = len; if (addr) { (*addr)[i] = a; } @@ -656,6 +656,9 @@ int virtio_gpu_create_mapping_iov(VirtIOGPU *g, qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for" " resource %d element %d\n", __func__, ab->resource_id, i); + if ((*iov)[i].iov_base) { + i++; /* cleanup the 'i'th map */ + } virtio_gpu_cleanup_mapping_iov(g, *iov, i); g_free(ents); *iov = NULL; |