[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if
From: |
Marcelo Tosatti |
Subject: |
Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed |
Date: |
Tue, 22 Apr 2014 18:27:59 -0300 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Tue, Apr 22, 2014 at 05:38:07PM -0300, Eduardo Habkost wrote:
> On Tue, Apr 22, 2014 at 04:10:44PM -0300, Marcelo Tosatti wrote:
> > 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.
> >
> > Also do not expose invariant tsc flag by default.
>
> What do you mean "do not expose invtsc by default", exactly? It is
> already not exposed by default because the default CPU model is qemu64
> and qemu64 doesn't have it enabled.
Should be "do not expose invtsc by default with -cpu host".
Since it blocks migration, i considered it a special flag that should
be set when user is aware that migration is going to be blocked.
Makes sense?
- [Qemu-devel] [patch 0/2] expose invariant tsc flag for kvm guests, Marcelo Tosatti, 2014/04/22
- [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed, Marcelo Tosatti, 2014/04/22
- Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed, Marcelo Tosatti, 2014/04/22
- Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed, Eduardo Habkost, 2014/04/22
- Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed,
Marcelo Tosatti <=
- Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed, Eduardo Habkost, 2014/04/22
- Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed, Paolo Bonzini, 2014/04/24
- Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed, Eduardo Habkost, 2014/04/24
- Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed, Paolo Bonzini, 2014/04/24
- Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed, Eduardo Habkost, 2014/04/24
- Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed, Paolo Bonzini, 2014/04/25
- Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed, Eduardo Habkost, 2014/04/28
- Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed, Paolo Bonzini, 2014/04/28
- Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed, Eduardo Habkost, 2014/04/28
- Re: [Qemu-devel] [patch 2/2] target-i386: block migration and savevm if invariant tsc is exposed, Paolo Bonzini, 2014/04/29