22 Dec
2023
22 Dec
'23
7:12 a.m.
From: Liu, Yi L yi.l.liu@intel.com Sent: Friday, December 22, 2023 3:02 PM
On Dec 22, 2023, at 14:47, Tian, Kevin kevin.tian@intel.com wrote:
From: Yang, Weijiang weijiang.yang@intel.com Sent: Friday, December 22, 2023 11:56 AM
- xa_for_each(&domain->iommu_array, i, info) {
nested_flush_pasid_iotlb(info->iommu, domain, addr,npages, 0);
if (domain->has_iotlb_device)continue;Shouldn't this be if (!domain->has_iotlb_device)?
yes that is wrong.
actually it's weird to put domain check in a loop of domain->iommu_array.
that check along with devtlb flush should be done out of that loop.
Maybe adding a bool, set it out of the loop, check the bool in the loop.
the point is that dev iotlb doesn't rely on info->iommu:
nested_flush_dev_iotlb(domain, addr, mask, &fault);
then why do it in the loop of info->iommu?