On Thu, May 17, 2018 at 04:32:52PM +0200, Auger Eric wrote:
> Hi Peter,
>
> On 05/04/2018 05:08 AM, Peter Xu wrote:
> > Add a per-iommu big lock to protect IOMMU status. Currently the only
> > thing to be protected is the IOTLB/context cache, since that can be
> > accessed even without BQL, e.g.,
Hi Peter,
On 05/04/2018 05:08 AM, Peter Xu wrote:
> Add a per-iommu big lock to protect IOMMU status. Currently the only
> thing to be protected is the IOTLB/context cache, since that can be
> accessed even without BQL, e.g., in IO dataplane.
As discussed together, Peter challenged per device mu
Add a per-iommu big lock to protect IOMMU status. Currently the only
thing to be protected is the IOTLB/context cache, since that can be
accessed even without BQL, e.g., in IO dataplane.
Note that we don't need to protect device page tables since that's fully
controlled by the guest kernel. Howe
