Messages in this thread | | | From | <> | Subject | RE: [PATCH] iommu/iova: Free all CPU rcache for retry when iova alloc failure | Date | Mon, 7 Mar 2022 11:49:27 +0800 |
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On Fri, 2022-03-04 at 14:03 +0000, Robin Murphy wrote: > > OK, so either there's a mystery bug where IOVAs somehow get freed on > offline CPUs, or the hotplug notifier isn't working correctly, or > you've > contrived a situation where alloc_iova_fast() is actually racing > against > iova_cpuhp_dead(). In the latter case, the solution is "don't do > that". > > This change should not be necessary. > > Thanks, > Robin.
Hi Robin,
You are right, kernel 5.15 already has this patch, but kernel 5.10 not contain.
Thanks, Yunfei.
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