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Re: [Qemu-devel] [PATCH 0/3] pc: Set hw_version on all machine classes
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From: |
Igor Mammedov |
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Subject: |
Re: [Qemu-devel] [PATCH 0/3] pc: Set hw_version on all machine classes |
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Date: |
Wed, 23 Sep 2015 10:04:49 +0200 |
On Tue, 22 Sep 2015 17:16:24 -0300
Eduardo Habkost <address@hidden> wrote:
> In 2012, QEMU had a bug where it exposed QEMU version information
> to the guest, meaning a QEMU upgrade would expose different
> hardware to the guest OS even if the same machine-type is being
> used.
>
> The bug was fixed by commit 93bfef4c6e4b23caea9d51e1099d06433d8835a4,
> on all machines up to pc-1.0. But we kept introducing the same
> bug on all newer machines since then. That means we are breaking
> guest ABI every time QEMU was upgraded.
>
> Fix this by setting the hw_version on all PC machines, making
> sure the hardware won't change when upgrading QEMU.
>
> This series is based on Michael's PCI tree, plus the "Set
> broken_reserved_end on pc-*-2.4, not 2.5" patch I submitted
> earlier today.
I haven't seen this patch on list, perhaps it needs to be resubmitted?