From: Markus Armbruster <armbru@redhat.com> To: Paolo Bonzini <pbonzini@redhat.com> Cc: Kevin Wolf <kwolf@redhat.com>, xen-devel@lists.xensource.com, Stefano Stabellini <stefano.stabellini@eu.citrix.com>, mst@redhat.com, qemu-devel@nongnu.org, John Snow <jsnow@redhat.com>, rth@twiddle.net Subject: Re: [Qemu-devel] [PATCH] Do not emulate a floppy drive when -nodefaults Date: Thu, 14 May 2015 14:45:30 +0200 [thread overview] Message-ID: <87egmjz5sl.fsf@blackfin.pond.sub.org> (raw) In-Reply-To: <555490EE.1040802@redhat.com> (Paolo Bonzini's message of "Thu, 14 May 2015 14:11:26 +0200") Paolo Bonzini <pbonzini@redhat.com> writes: > On 14/05/2015 14:02, Markus Armbruster wrote: >> It should certainly be off for pc-q35-2.4 and newer. Real Q35 boards >> commonly don't have an FDC (depends on the Super I/O chip used). >> >> We may want to keep it off for pc-i440fx-2.4 and newer. I doubt >> there's a real i440FX without an FDC, but our virtual i440FX is quite >> unlike a real one in other ways already. > > That would break libvirt for people upgrading from 2.3 to 2.4. So it's > more like pc-i440fx-3.0 and pc-q35-3.0. What exactly breaks when? > Unless for q35 we decide to > break everything and retroactively nuke the controller. > > (I'm still not sure why we have backwards-compatible machine types for q35). Beats me :) [...]
WARNING: multiple messages have this Message-ID (diff)
From: Markus Armbruster <armbru@redhat.com> To: Paolo Bonzini <pbonzini@redhat.com> Cc: Kevin Wolf <kwolf@redhat.com>, xen-devel@lists.xensource.com, Stefano Stabellini <stefano.stabellini@eu.citrix.com>, mst@redhat.com, qemu-devel@nongnu.org, John Snow <jsnow@redhat.com>, rth@twiddle.net Subject: Re: [PATCH] Do not emulate a floppy drive when -nodefaults Date: Thu, 14 May 2015 14:45:30 +0200 [thread overview] Message-ID: <87egmjz5sl.fsf@blackfin.pond.sub.org> (raw) In-Reply-To: <555490EE.1040802@redhat.com> (Paolo Bonzini's message of "Thu, 14 May 2015 14:11:26 +0200") Paolo Bonzini <pbonzini@redhat.com> writes: > On 14/05/2015 14:02, Markus Armbruster wrote: >> It should certainly be off for pc-q35-2.4 and newer. Real Q35 boards >> commonly don't have an FDC (depends on the Super I/O chip used). >> >> We may want to keep it off for pc-i440fx-2.4 and newer. I doubt >> there's a real i440FX without an FDC, but our virtual i440FX is quite >> unlike a real one in other ways already. > > That would break libvirt for people upgrading from 2.3 to 2.4. So it's > more like pc-i440fx-3.0 and pc-q35-3.0. What exactly breaks when? > Unless for q35 we decide to > break everything and retroactively nuke the controller. > > (I'm still not sure why we have backwards-compatible machine types for q35). Beats me :) [...]
next prev parent reply other threads:[~2015-05-14 12:45 UTC|newest] Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-05-13 17:29 [Qemu-devel] [PATCH] Do not emulate a floppy drive when -nodefaults Stefano Stabellini 2015-05-13 17:29 ` Stefano Stabellini 2015-05-13 17:42 ` [Qemu-devel] " Daniel P. Berrange 2015-05-13 17:42 ` Daniel P. Berrange 2015-05-13 18:15 ` [Qemu-devel] " Stefano Stabellini 2015-05-13 18:15 ` Stefano Stabellini 2015-05-13 21:46 ` [Qemu-devel] " John Snow 2015-05-13 21:46 ` John Snow 2015-05-14 11:12 ` [Qemu-devel] " Stefano Stabellini 2015-05-14 11:12 ` Stefano Stabellini 2015-05-14 11:18 ` [Qemu-devel] " Daniel P. Berrange 2015-05-14 11:18 ` Daniel P. Berrange 2015-05-14 11:46 ` [Qemu-devel] " Michael S. Tsirkin 2015-05-14 11:46 ` Michael S. Tsirkin 2015-05-14 12:02 ` [Qemu-devel] " Markus Armbruster 2015-05-14 12:02 ` Markus Armbruster 2015-05-14 12:11 ` [Qemu-devel] " Paolo Bonzini 2015-05-14 12:11 ` Paolo Bonzini 2015-05-14 12:45 ` Markus Armbruster [this message] 2015-05-14 12:45 ` Markus Armbruster 2015-05-14 12:48 ` [Qemu-devel] " Daniel P. Berrange 2015-05-14 12:48 ` Daniel P. Berrange 2015-05-14 12:53 ` [Qemu-devel] " Paolo Bonzini 2015-05-14 12:53 ` Paolo Bonzini 2015-05-14 13:25 ` [Qemu-devel] [Xen-devel] " Sander Eikelenboom 2015-05-14 13:25 ` Sander Eikelenboom 2015-05-14 13:41 ` [Qemu-devel] " Daniel P. Berrange 2015-05-14 13:41 ` Daniel P. Berrange 2015-05-14 13:55 ` [Qemu-devel] " Paolo Bonzini 2015-05-14 13:55 ` Paolo Bonzini 2015-05-14 14:39 ` [Qemu-devel] " Stefano Stabellini 2015-05-14 14:39 ` Stefano Stabellini 2015-05-14 14:44 ` [Qemu-devel] " Paolo Bonzini 2015-05-14 14:44 ` Paolo Bonzini 2015-05-14 14:52 ` [Qemu-devel] " Stefano Stabellini 2015-05-14 14:52 ` Stefano Stabellini 2015-05-14 13:57 ` [Qemu-devel] " Michael S. Tsirkin 2015-05-14 13:57 ` Michael S. Tsirkin 2015-05-14 14:07 ` [Qemu-devel] " Michael S. Tsirkin 2015-05-14 14:07 ` Michael S. Tsirkin 2015-05-14 17:54 ` [Qemu-devel] " John Snow 2015-05-14 17:54 ` John Snow 2015-05-15 7:50 ` [Qemu-devel] " Markus Armbruster 2015-05-15 7:50 ` Markus Armbruster 2015-05-15 8:19 ` [Qemu-devel] " Paolo Bonzini 2015-05-15 8:19 ` Paolo Bonzini 2015-05-15 10:20 ` [Qemu-devel] " Stefano Stabellini 2015-05-15 10:20 ` Stefano Stabellini 2015-05-18 9:19 ` [Qemu-devel] " Kevin Wolf 2015-05-18 9:19 ` Kevin Wolf 2015-05-14 11:47 ` [Qemu-devel] " Michael S. Tsirkin 2015-05-14 11:47 ` Michael S. Tsirkin 2015-05-14 11:54 ` [Qemu-devel] " Paolo Bonzini 2015-05-14 11:54 ` Paolo Bonzini 2015-05-14 11:56 ` [Qemu-devel] " Michael S. Tsirkin 2015-05-14 11:56 ` Michael S. Tsirkin 2015-05-14 12:47 ` [Qemu-devel] " Markus Armbruster 2015-05-14 12:47 ` Markus Armbruster 2015-05-14 4:38 ` [Qemu-devel] " Stefan Weil 2015-05-14 4:38 ` Stefan Weil 2015-05-14 5:45 ` [Qemu-devel] " Michael S. Tsirkin 2015-05-14 5:45 ` Michael S. Tsirkin 2015-05-13 21:44 ` [Qemu-devel] " Michael S. Tsirkin 2015-05-13 21:44 ` Michael S. Tsirkin
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