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vhost-vdpa: Add check for full 64-bit in region delete

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The unmap ioctl doesn't accept a full 64-bit span. So need to
add check for the section's size in vhost_vdpa_listener_region_del().

Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-Id: <20230510054631.2951812-4-lulu@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Cindy Lu 2023-05-10 13:46:30 +08:00 • committed by Michael S. Tsirkin
parent 3d1e4d34a8
commit 2fbef6aad8
1 changed files with 19 additions and 1 deletions
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20
hw/virtio/vhost-vdpa.c
View file

@ -316,10 +316,28 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener,
vhost_iova_tree_remove(v->iova_tree, *result); vhost_iova_tree_remove(v->iova_tree, *result);
} }
vhost_vdpa_iotlb_batch_begin_once(v); vhost_vdpa_iotlb_batch_begin_once(v);
/*
* The unmap ioctl doesn't accept a full 64-bit. need to check it
*/
if (int128_eq(llsize, int128_2_64())) {
llsize = int128_rshift(llsize, 1);
ret = vhost_vdpa_dma_unmap(v, VHOST_VDPA_GUEST_PA_ASID, iova,
int128_get64(llsize));
if (ret) {
error_report("vhost_vdpa_dma_unmap(%p, 0x%" HWADDR_PRIx ", "
"0x%" HWADDR_PRIx ") = %d (%m)",
v, iova, int128_get64(llsize), ret);
}
iova += int128_get64(llsize);
}
ret = vhost_vdpa_dma_unmap(v, VHOST_VDPA_GUEST_PA_ASID, iova, ret = vhost_vdpa_dma_unmap(v, VHOST_VDPA_GUEST_PA_ASID, iova,
int128_get64(llsize)); int128_get64(llsize));
if (ret) { if (ret) {
error_report("vhost_vdpa dma unmap error!"); error_report("vhost_vdpa_dma_unmap(%p, 0x%" HWADDR_PRIx ", "
"0x%" HWADDR_PRIx ") = %d (%m)",
v, iova, int128_get64(llsize), ret);
} }
memory_region_unref(section->mr); memory_region_unref(section->mr);