Re: [Qemu-devel] [PATCH RESEND v4 17/18] target-i386: block migration and savevm if invariant tsc is exposed

[Juan Quintela]

Eduardo Habkost <address@hidden> 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.
>
> Cc: Juan Quintela <address@hidden>
> Signed-off-by: Marcelo Tosatti <address@hidden>
> Reviewed-by: Eduardo Habkost <address@hidden>
> Signed-off-by: Eduardo Habkost <address@hidden>

Reviewed-by: Juan Quintela <address@hidden>

I don't have a better suggestion.  Really we could allow migration to
identical machines, but I assume that there is not a way to read the tsc
frequency?
(Althought reading the model name/numbers could be enough?)

I.e. Add a subsection that includes the cpu model name, or whatever we
can have to identify the host cpu?

Later, Juan.