On Tue, Aug 01, 2017 at 07:37:27PM +0800, Baoquan He wrote: > @@ -908,6 +911,14 @@ static int copy_device_table(void) > old_dev_tbl_cpy[devid].data[1] > = old_devtb[devid].data[1]; > __set_bit(dom_id, amd_iommu_pd_alloc_bitmap); > + /* If gcr3 table existed, mask it out */ > + if (old_devtb[devid].data[0] & DTE_FLAG_GV) { > + tmp = DTE_GCR3_VAL_B(~0ULL) << > DTE_GCR3_SHIFT_B; > + tmp |= DTE_GCR3_VAL_C(~0ULL) << > DTE_GCR3_SHIFT_C; > + old_dev_tbl_cpy[devid].data[1] &= ~tmp; > + tmp = DTE_GCR3_VAL_A(~0ULL) << > DTE_GCR3_SHIFT_A; > + old_dev_tbl_cpy[devid].data[0] &= ~tmp;
You also need to clear the DTE_FLAG_GV bit. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu