On Wed, Dec 11, 2019 at 09:40:15AM +0800, Lu Baolu wrote:
If the default DMA domain of a group doesn't fit a device, it will still sit in the group but use a private identity domain. When map/unmap/iova_to_phys come through iommu API, the driver should still serve them, otherwise, other devices in the same group will be impacted. Since identity domain has been mapped with the whole available memory space and RMRRs, we don't need to worry about the impact on it.
Link: https://www.spinics.net/lists/iommu/msg40416.html Cc: Jerry Snitselaar jsnitsel@redhat.com Reported-by: Jerry Snitselaar jsnitsel@redhat.com Fixes: 942067f1b6b97 ("iommu/vt-d: Identify default domains replaced with private") Cc: stable@vger.kernel.org # v5.3+ Signed-off-by: Lu Baolu baolu.lu@linux.intel.com
drivers/iommu/intel-iommu.c | 8 -------- 1 file changed, 8 deletions(-)
Applied for v5.5, thanks.