Messages in this thread | | | Date | Tue, 27 Jul 2021 17:51:31 +0000 | From | Wei Liu <> | Subject | Re: [PATCH v3] hyperv: root partition faults writing to VP ASSIST MSR PAGE |
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On Tue, Jul 27, 2021 at 04:10:44PM +0530, Praveen Kumar wrote: [...] > > @@ -170,9 +185,21 @@ static int hv_cpu_die(unsigned int cpu) > > hv_common_cpu_die(cpu); > > - if (hv_vp_assist_page && hv_vp_assist_page[cpu]) > + if (hv_vp_assist_page && hv_vp_assist_page[cpu]) { > wrmsrl(HV_X64_MSR_VP_ASSIST_PAGE, 0); >
The content of the MSR should be preserved; otherwise you hit the same fault for root kernel.
Wei.
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