Re: [PATCHv3] Add invariant TSC cpu flag

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On 06/02/2014 10:17 PM, 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.
> 

I have pushed the patch now that it's merged in qemu.git:
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=303752a

commit 303752a9068bfe84b9b05f1cd5ad5ff65b7f3ea6
Author:     Marcelo Tosatti <mtosatti@xxxxxxxxxx>
AuthorDate: 2014-04-30 13:48:45 -0300
Commit:     Andreas Färber <afaerber@xxxxxxx>
CommitDate: 2014-06-25 23:54:57 +0200

    target-i386: Support "invariant tsc" flag

Jan

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