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Re: [PATCH v3] piix: fix xenfv regression, add compat machine xenfv-qemu

From: Olaf Hering
Subject: Re: [PATCH v3] piix: fix xenfv regression, add compat machine xenfv-qemu4
Date: Fri, 27 Mar 2020 16:19:16 +0100

On Wed, Mar 25, Paolo Bonzini wrote:

> On 25/03/20 16:45, Olaf Hering wrote:
> >> hw_compat_3_1 and pc_compat_3_1
> > I have asked about this earlier, so again:
> > What do all these arrays do in the context of 'xenfv' to the emulated 
> > system?
> They change the hardware and CPU features that is presented to the VMs,
> if the respective devices are included in the virtual machine.  For
> example USB devices will have a different serial number on 3.1 and 5.0,
> and VGA devices present EDID information on 4.1+.

I will adjust the change to use either pc_i440fx_3_1_machine_options
or pc_i440fx_4_2_machine_options.


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