On 2017年02月03日 16:22, Peter Xu wrote:
This patch is based on Aviv Ben-David (<[email protected]>)'s patch upstream: "IOMMU: enable intel_iommu map and unmap notifiers" https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg01453.html However I removed/fixed some content, and added my own codes. Instead of translate() every page for iotlb invalidations (which is slower), we walk the pages when needed and notify in a hook function. This patch enables vfio devices for VT-d emulation. And, since we already have vhost DMAR support via device-iotlb, a natural benefit that this patch brings is that vt-d enabled vhost can live even without ATS capability now. Though more tests are needed. Signed-off-by: Peter Xu <[email protected]> ---
[...]
- vtd_page_walk(&ce, 0, ~0, vtd_replay_hook, (void *)n); + vtd_page_walk(&ce, 0, ~0, vtd_replay_hook, (void *)n, false);
Should be ~0ULL too, with this fixed. Reviewed-by: Jason Wang <[email protected]>
