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Re: [Qemu-devel] [PATCH] isapc: Remove unnecessary migration compatibili
From: |
Eduardo Habkost |
Subject: |
Re: [Qemu-devel] [PATCH] isapc: Remove unnecessary migration compatibility code |
Date: |
Tue, 10 Oct 2017 14:53:44 -0300 |
User-agent: |
Mutt/1.9.0 (2017-09-02) |
On Tue, Oct 10, 2017 at 01:42:04PM +0200, Igor Mammedov wrote:
> On Fri, 6 Oct 2017 10:25:02 -0300
> Eduardo Habkost <address@hidden> wrote:
>
> > We don't touch isapc when we change guest ABI and add new entries
> > to PC_COMPAT_* or new PCMachineClass compat flags. This means
> > isapc never guaranteed guest ABI and cross-QEMU-version live
> > migration compatibility. There's no point in keeping code for
> > kvm-pv-eoi and APIC ID compatibility in pc_init_isa().
> >
> > Signed-off-by: Eduardo Habkost <address@hidden>
> Reviewed-by: Igor Mammedov <address@hidden>
Thanks!
Michael, do you prefer those pc*.c patches that touch only
CPU-related code to go always through your tree, or can I merge
them through x86-next without your Acked-by if it's appropriate?
>
> > ---
> > hw/i386/pc_piix.c | 2 --
> > 1 file changed, 2 deletions(-)
> >
> > diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
> > index 9ff79b1fd9..31646e63c4 100644
> > --- a/hw/i386/pc_piix.c
> > +++ b/hw/i386/pc_piix.c
> > @@ -378,8 +378,6 @@ static void pc_compat_0_13(MachineState *machine)
> >
> > static void pc_init_isa(MachineState *machine)
> > {
> > - x86_cpu_change_kvm_default("kvm-pv-eoi", NULL);
> > - enable_compat_apic_id_mode();
> > pc_init1(machine, TYPE_I440FX_PCI_HOST_BRIDGE, TYPE_I440FX_PCI_DEVICE);
> > }
> >
>
--
Eduardo