On Thu, 2011-05-05 at 18:13 -0700, Yinghai Lu wrote:
> @@ -3252,6 +3252,9 @@ static int device_notifier(struct notifi
> return 0;
>
> if (action == BUS_NOTIFY_UNBOUND_DRIVER && !iommu_pass_through) {
> + /* before we remove dev with domain, flush IOTLB */
> + flush_unmaps();
> +
> domain_remove_one_dev_info(domain, pdev);
>
> if (!(domain->flags & DOMAIN_FLAG_VIRTUAL_MACHINE) &&
That calls flush_unmaps() without the async_umap_flush_lock held,
doesn't it? A few days ago I asked someone else to test this candidate
patch for a similar issue:
http://david.woodhou.se/flush-unmaps-on-unbind.patch
--
David Woodhouse Open Source Technology Centre
David.Woodhouse@xxxxxxxxx Intel Corporation
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