From: "Michael S. Tsirkin" <mst@redhat.com>
To: Sander Eikelenboom <linux@eikelenboom.it>
Cc: Anthony PERARD <anthony.perard@citrix.com>,
xen-devel <xen-devel@lists.xenproject.org>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
Subject: Re: [Qemu-devel] Commit 9e047b982452c633882b486682966c1d97097015 (piix4: add acpi pci hotplug support) seems to break Xen pci-passthrough
Date: Tue, 4 Feb 2014 16:32:19 +0200 [thread overview]
Message-ID: <20140204143219.GA7561@redhat.com> (raw)
In-Reply-To: <1265435524.20140204004608@eikelenboom.it>
On Tue, Feb 04, 2014 at 12:46:08AM +0100, Sander Eikelenboom wrote:
> Grmbll my fat fingers hit the send shortcut too soon by accident ..
> let's try again ..
>
> Hi Michael,
>
> A git bisect turned out that commit 9e047b982452c633882b486682966c1d97097015 breaks pci-passthrough on Xen.
>
> commit 9e047b982452c633882b486682966c1d97097015
> Author: Michael S. Tsirkin <mst@redhat.com>
> Date: Mon Oct 14 18:01:20 2013 +0300
>
> piix4: add acpi pci hotplug support
>
> Add support for acpi pci hotplug using the
> new infrastructure.
> PIIX4 legacy interface is maintained as is for
> machine types 1.7 and older.
>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
>
>
> The error is not very verbose :
>
> libxl: error: libxl_qmp.c:287:qmp_handle_error_response: received an error message from QMP server: Device initialization failed.
> libxl: error: libxl_qmp.c:287:qmp_handle_error_response: received an error message from QMP server: Device initialization failed.
> libxl: error: libxl_qmp.c:287:qmp_handle_error_response: received an error message from QMP server: Device initialization failed.
> libxl: error: libxl_qmp.c:287:qmp_handle_error_response: received an error message from QMP server: Device initialization failed.
>
> So it seems there is an issue with preserving the legacy interface.
Which machine type is broken?
What's the command line used?
What's the value of has_acpi_build in hw/i386/pc_piix.c?
What happens if you add
-global PIIX4_PM.acpi-pci-hotplug-with-bridge-support=off
?
> --
> Sander
>
next prev parent reply other threads:[~2014-02-04 14:28 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-03 23:46 [Qemu-devel] Commit 9e047b982452c633882b486682966c1d97097015 (piix4: add acpi pci hotplug support) seems to break Xen pci-passthrough Sander Eikelenboom
2014-02-04 14:32 ` Michael S. Tsirkin [this message]
2014-02-04 15:07 ` Sander Eikelenboom
2014-02-04 15:07 ` [Qemu-devel] " Sander Eikelenboom
2014-02-04 15:16 ` Igor Mammedov
2014-02-04 15:30 ` Igor Mammedov
2014-02-04 15:49 ` Michael S. Tsirkin
2014-02-04 14:32 ` Michael S. Tsirkin
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