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Re: [Qemu-devel] [PATCH v5 4/5] hw/i386/pc: use PVH option rom
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] [PATCH v5 4/5] hw/i386/pc: use PVH option rom |
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Date: |
Mon, 21 Jan 2019 19:33:32 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.1 |
On 21/01/19 18:36, Stefano Garzarella wrote:
>>
>> | On Tue, Jan 15, 2019 at 01:57:22PM -0500, Michael S. Tsirkin wrote:
>> | > OK but this is guest visible so needs to be guarded by the
>> | > new machine type.
>> |
>> | Aren't option ROMs treated like other firmware? i.e.: guest
>> | visible, but copied during live migration and not considered part
>> | of guest ABI.
> I don't know the exact answer, but reading the wiki, I think Michael is right!
> (https://wiki.qemu.org/Features/Migration/Troubleshooting#ROMs)
>
> Maybe it is related for PVH feature in general, because if we try to
> migrate to a QEMU version that doesn't support PVH I'm not sure what is
> the behaviour.
As far as I understand, QEMU would fail to migrate to the destination
because the PVH option ROM doesn't have a corresponding RAMBlock.
Paolo
[Qemu-devel] [PATCH v5 5/5] optionrom/pvh: load initrd from fw_cfg, Stefano Garzarella, 2019/01/18
[Qemu-devel] [PATCH v5 1/5] linuxboot_dma: remove duplicate definitions of FW_CFG, Stefano Garzarella, 2019/01/18
[Qemu-devel] [PATCH v5 2/5] linuxboot_dma: move common functions in a new header, Stefano Garzarella, 2019/01/18
Re: [Qemu-devel] [PATCH v5 0/5] pvh: add new PVH option rom, Stefan Hajnoczi, 2019/01/21