github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-28 00:53:34 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

iommu/vt-d: Do not wipe out the page table NID when devices detach

Browse Source 
The NID is used to control which NUMA node memory for the page table is
allocated it from. It should be a permanent property of the page table
when it was allocated and not change during attach/detach of devices.

Reviewed-by: Wei Wang <wei.w.wang@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/3-v3-dbbe6f7e7ae3+124ffe-vtd_prep_jgg@nvidia.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Fixes: 7c204426b8 ("iommu/vt-d: Add domain_alloc_paging support")
Link: https://lore.kernel.org/r/20250714045028.958850-6-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Jason Gunthorpe 2025-07-14 12:50:22 +08:00 committed by Will Deacon
parent 00939bebe5
commit 5c3687d578
1 changed files with 0 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/iommu/intel/iommu.c
View File

@ -1391,7 +1391,6 @@ void domain_detach_iommu(struct dmar_domain *domain, struct intel_iommu *iommu)
if (--info->refcnt == 0) {
ida_free(&iommu->domain_ida, info->did);
xa_erase(&domain->iommu_array, iommu->seq_id);
domain->nid = NUMA_NO_NODE;
kfree(info);
}
}