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Re: [PATCH v3] piix: fix xenfv regression, add compat machine xenfv-qemu
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From: |
Paolo Bonzini |
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Subject: |
Re: [PATCH v3] piix: fix xenfv regression, add compat machine xenfv-qemu4 |
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Date: |
Wed, 25 Mar 2020 18:06:16 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 |
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+.
Paolo