From: Laszlo Ersek <lersek@redhat.com>
To: Igor Mammedov <imammedo@redhat.com>,
Eduardo Habkost <ehabkost@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
"Michael S. Tsirkin" <mst@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 12:37:08 +0200 [thread overview]
Message-ID: <560280D4.8070609@redhat.com> (raw)
In-Reply-To: <20150923100449.036210bc@nial.brq.redhat.com>
On 09/23/15 10:04, Igor Mammedov wrote:
> 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?
http://lists.nongnu.org/archive/html/qemu-devel/2015-09/msg05778.html
next prev parent reply other threads:[~2015-09-23 10:37 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 ` [Qemu-devel] [PATCH 0/3] pc: Set hw_version on all machine classes Igor Mammedov
2015-09-23 10:37 ` Laszlo Ersek [this message]
2015-09-23 11:47 ` Igor Mammedov
2015-09-23 12:31 ` Laszlo Ersek
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=560280D4.8070609@redhat.com \
--to=lersek@redhat.com \
--cc=ehabkost@redhat.com \
--cc=imammedo@redhat.com \
--cc=marcel.a@redhat.com \
--cc=mst@redhat.com \
--cc=pbonzini@redhat.com \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).