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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Jun 08, 2022 at 08:35:47AM +0000, Tian, Kevin wrote: > > @@ -2519,7 +2515,17 @@ static void vfio_iommu_type1_detach_group(void > > *iommu_data, > > kfree(domain); > > vfio_iommu_aper_expand(iommu, &iova_copy); > > vfio_update_pgsize_bitmap(iommu); > > + /* > > + * Removal of a group without dirty tracking may > > allow > > + * the iommu scope to be promoted. > > + */ > > + if (!group->pinned_page_dirty_scope) { > > + iommu->num_non_pinned_groups--; > > + if (iommu->dirty_page_tracking) > > + > > vfio_iommu_populate_bitmap_full(iommu); > > This doesn't look correct. The old code decrements > num_non_pinned_groups for every detach group without dirty > tracking. But now it's only done when the domain is about to > be released... Hmm..you are right. It should be placed outside: if (list_empty(&domain->group_list)) { ... } + if (!group->pinned_page_dirty_scope) { + ... + } Will fix this and the same problem in PATCH-5 too. Thanks! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel