On 14.11.2019 00:10, Andreas Kinzler wrote: > I came across the following: https://lkml.org/lkml/2019/8/29/536 > > Could that be the reason for the problem mentioned below? Xen is using > HPET as clocksource on the platform/mainboard. Is there an (easy) way to > verify if Xen uses PC10?
In principle this can be obtained via both the xenpm utility and the 'c' debug key. For Coffee Lake, however, I can't find any indication in the SDM that a PC10 residency MSR would exist. Hence I can only suggest that you try again with limited or no use of C states, to at least get a hint as to a possible connection. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
