From: Igor Mammedov <imammedo@redhat.com>
To: Eduardo Habkost <ehabkost@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
Laszlo Ersek <lersek@redhat.com>,
qemu-devel@nongnu.org, Marcel Apfelbaum <marcel.a@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 0/3] pc: Set hw_version on all machine classes
Date: Wed, 23 Sep 2015 10:04:49 +0200 [thread overview]
Message-ID: <20150923100449.036210bc@nial.brq.redhat.com> (raw)
In-Reply-To: <1442952987-20187-1-git-send-email-ehabkost@redhat.com>
On Tue, 22 Sep 2015 17:16:24 -0300
Eduardo Habkost <ehabkost@redhat.com> 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?
next prev parent reply other threads:[~2015-09-23 8:05 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-22 20:16 [Qemu-devel] [PATCH 0/3] pc: Set hw_version on all machine classes Eduardo Habkost
2015-09-22 20:16 ` [Qemu-devel] [PATCH 1/3] " Eduardo Habkost
2015-09-22 20:26 ` Laszlo Ersek
2015-09-22 20:34 ` Eduardo Habkost
2015-09-22 20:16 ` [Qemu-devel] [PATCH 2/3] osdep: Rename qemu_{get, set}_version() to qemu_{, set_}hw_version() Eduardo Habkost
2015-09-22 20:21 ` John Snow
2015-09-22 20:16 ` [Qemu-devel] [PATCH 3/3] megasas: Use qemu_hw_version() instead of QEMU_VERSION Eduardo Habkost
2015-09-22 20:21 ` Hannes Reinecke
2015-09-22 20:33 ` Laszlo Ersek
2015-09-22 20:36 ` Eduardo Habkost
2015-09-23 8:04 ` Igor Mammedov [this message]
2015-09-23 10:37 ` [Qemu-devel] [PATCH 0/3] pc: Set hw_version on all machine classes Laszlo Ersek
2015-09-23 11:47 ` Igor Mammedov
2015-09-23 12:31 ` Laszlo Ersek
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