On 11.12.2020 12:44, Harsha Shamsundara Havanur wrote: > A HVM domain flushes cache on all the cpus using > `flush_all` macro which uses cpu_online_map, during > i) creation of a new domain > ii) when device-model op is performed > iii) when domain is destructed. > > This triggers IPI on all the cpus, thus affecting other > domains that are pinned to different pcpus. This patch > restricts cache flush to the set of cpus affinitized to > the current domain using `domain->dirty_cpumask`.
But then you need to effect cache flushing when a CPU gets taken out of domain->dirty_cpumask. I don't think you/we want to do that. Jan
