On Wed, 06 Mar 2024 00:49:34 +0000, Krister Johansen <kjlx@xxxxxxxxxxxxxxxxxx> wrote: > > Hi Stable Team, > In 5.15, unmapping large kvm vms on arm64 can generate softlockups. My team has > been hitting this when tearing down VMs > 100Gb in size. > > Oliver fixed this with the attached patches. They've been in mainline since > 6.1. > > I tested on 5.15.150 with these patches applied. When they're present, > both the dirty_log_perf_test detailed in the second patch, and > kvm_page_table_test no longer generate softlockups when unmapping VMs > with large memory configurations. > > Would you please consider these patches for inclusion in an upcoming 5.15 > release? > > Change in v2: I ran format-patch without the --from option which incorrectly > generated the first series without leaving Oliver in place as the author. The > v2 should retain the correct authorship. Apologies for the mistake. Thanks for this. FWIW, Acked-by: Marc Zyngier <maz@xxxxxxxxxx> M. -- Without deviation from the norm, progress is not possible.
