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[Xen-users] Which tsc_mode= for PVHVM guest? wiki exmple recommends deprecated "=0"


  • To: xen-users@xxxxxxxxxxxxx
  • From: suse.dev@xxxxxx
  • Date: Mon, 25 Jan 2016 08:01:39 -0800
  • Delivery-date: Mon, 25 Jan 2016 16:02:47 +0000
  • List-id: Xen user discussion <xen-users.lists.xen.org>

I'm running Xen 4.6.0 Dom0 on linux/64 v4.4.0

I'm working on PHVHM DomUs.

@ http://wiki.xen.org/wiki/Xen_Linux_PV_on_HVM_drivers, the

        "Example HVM guest configuration file for PVHVM use"

sets

        tsc_mode=0

But this doc,

        http://wiki.xen.org/wiki/Xen_Linux_PV_on_HVM_drivers

says "=0" is deprecated

        tsc_mode="MODE"

        Specifies how the TSC (Time Stamp Counter) should be provided to the 
guest (X86 only). Specifying this option as a number is deprecated.

If I'm running on Intel (Haswell) hardware, with PVHVM linux/64 DomU, and ntpd 
time kept in the DomU, what's the recommended 

        tsc_mode=

?

Just 'default'? Or other,  for some reason?

Thanks.

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