Hi, Julien. On Mon, Feb 20, 2017 at 10:31 AM, Julien Grall <julien.gr...@arm.com> wrote: > Hello Oleksandr, > > On 02/17/2017 08:20 PM, Oleksandr Tyshchenko wrote: >> >> Hi, all. >> >> So, as I understand we have two possible solutions for the IOMMU page >> table to be populated: >> 1. When the first device is being assigned. Retrieve all mappings >> from stage-2 table. >> 2. When the domain is being created. >> >> I would prefer the second variant. > > > I am happy with the second variant as long as IOMMU is not enabled by > default when the guest will have no device assigned. OK.
Just to clarify. We don't need to assign devices when creating domain (at the iommu_domain_init() time). We just need to have some knowledge about device assignment in general (will the guest have assigned devices or won't) . And only in case when the guest is going to have assigned devices we will populate IOMMU page table (call iommu_construct()). Right? > > Cheers, > > -- > Julien Grall -- Regards, Oleksandr Tyshchenko _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
