Re: [libvirt] [PATCHv3] Add invariant TSC cpu flag
On 05/15/2014 02:31 AM, Ján Tomko wrote:
Add suport for invariant TSC flag (CPUID 0x80000007, bit 8 of EDX).
If this flag is enabled, the TSC ticks at a constant rate across
all ACPI P-, C- and T-states.
This can be enabled by adding:
<feature name='invtsc'/>
to the <cpu> element.
Migration and saving the domain does not work with this flag.
QEMU support for this is not merged yet:
https://lists.gnu.org/archive/html/qemu-devel/2014-04/msg05024.html
In spite of Dan's ack, let's wait until it actually lands in qemu.git
before you push this.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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