Re: [libvirt] [PATCHv3] Add invariant TSC cpu flag
On Mon, Jun 02, 2014 at 02:17:05PM -0600, Eric Blake wrote:
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.
Doh, sorry, I missed that it wasn't merged in QEMU yet when going
through old patches with no replies.
Regards,
Daniel
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