FYI, we noticed the below changes on git://internal_mailing_list_patch_tree Baoquan-He/iommu-vt-d-break-the-for-loop-if-an-empty-ir_ioapic-entry-found commit c1b9a54b6f21f22bb5fba5cb981da0be06011476 ("iommu/vt-d: Adjsut the return value of the parse_ioapics_under_ir") The following new message in kernel log may make end user confusing. The test was done without hibernation. [ 0.241752] DMAR-IR: Failed to copy IR table for dmar0 from previous kernel To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Ying Huang