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Re: [Qemu-devel] [PATCH RESEND v4 17/18] target-i386: block migration an
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From: |
Eduardo Habkost |
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Subject: |
Re: [Qemu-devel] [PATCH RESEND v4 17/18] target-i386: block migration and savevm if invariant tsc is exposed |
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Date: |
Tue, 10 Jun 2014 11:43:29 -0300 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Tue, Jun 10, 2014 at 12:42:14PM +0530, Amit Shah wrote:
> On (Wed) 14 May 2014 [16:30:09], Eduardo Habkost wrote:
> > From: Marcelo Tosatti <address@hidden>
> >
> > Invariant TSC documentation mentions that "invariant TSC will run at a
> > constant rate in all ACPI P-, C-. and T-states".
> >
> > This is not the case if migration to a host with different TSC frequency
> > is allowed, or if savevm is performed. So block migration/savevm.
>
> Can you add this to the release notes, please?
It can be mentioned as new feature, sure, but note that it shouldn't
affect any existing users, except the ones who decide to explicitly use
"-cpu ...,+invtsc" or "-cpu host,migratable=no" on the command line.
--
Eduardo