Re: [Xen-devel] qemu device model question

2015-05-19 Thread George Dunlap
On Tue, May 19, 2015 at 12:36 AM, Stefano Stabellini wrote: > On Mon, 18 May 2015, Ian Campbell wrote: >> On Mon, 2015-05-18 at 10:49 +0100, George Dunlap wrote: >> > Is there really no way to start up a qdisk process after the domain is >> > created? The qdisk process doesn't actually need to do

Re: [Xen-devel] qemu device model question

2015-05-18 Thread Stefano Stabellini
On Mon, 18 May 2015, Ian Campbell wrote: > On Mon, 2015-05-18 at 10:49 +0100, George Dunlap wrote: > > Is there really no way to start up a qdisk process after the domain is > > created? The qdisk process doesn't actually need to do any emulation, > > after all -- it's just acting as a backend, ri

Re: [Xen-devel] qemu device model question

2015-05-18 Thread George Dunlap
On Wed, May 13, 2015 at 10:30 AM, Ian Campbell wrote: > On Wed, 2015-05-13 at 10:54 +0200, Juergen Gross wrote: >> Hi, >> >> while trying to build a pvusb backend in qemu I think I've found a >> general issue in xl: qemu for pv-domains is started only at domain >> creation and only if there is at

Re: [Xen-devel] qemu device model question

2015-05-18 Thread Ian Campbell
On Mon, 2015-05-18 at 10:49 +0100, George Dunlap wrote: > Is there really no way to start up a qdisk process after the domain is > created? The qdisk process doesn't actually need to do any emulation, > after all -- it's just acting as a backend, right? FWIW xencommons starts a qemu for dom0 usin

Re: [Xen-devel] qemu device model question

2015-05-13 Thread Wei Liu
On Wed, May 13, 2015 at 02:26:33PM +0100, Ian Campbell wrote: > On Wed, 2015-05-13 at 14:06 +0100, Wei Liu wrote: > > On Wed, May 13, 2015 at 10:30:40AM +0100, Ian Campbell wrote: > > > On Wed, 2015-05-13 at 10:54 +0200, Juergen Gross wrote: > > > > Hi, > > > > > > > > while trying to build a pvus

Re: [Xen-devel] qemu device model question

2015-05-13 Thread Wei Liu
On Wed, May 13, 2015 at 04:44:03PM +0200, Juergen Gross wrote: > On 05/13/2015 03:06 PM, Wei Liu wrote: > >On Wed, May 13, 2015 at 10:30:40AM +0100, Ian Campbell wrote: > >>On Wed, 2015-05-13 at 10:54 +0200, Juergen Gross wrote: > >>>Hi, > >>> > >>>while trying to build a pvusb backend in qemu I th

Re: [Xen-devel] qemu device model question

2015-05-13 Thread Juergen Gross
On 05/13/2015 03:06 PM, Wei Liu wrote: On Wed, May 13, 2015 at 10:30:40AM +0100, Ian Campbell wrote: On Wed, 2015-05-13 at 10:54 +0200, Juergen Gross wrote: Hi, while trying to build a pvusb backend in qemu I think I've found a general issue in xl: qemu for pv-domains is started only at domain

Re: [Xen-devel] qemu device model question

2015-05-13 Thread Ian Campbell
On Wed, 2015-05-13 at 14:06 +0100, Wei Liu wrote: > On Wed, May 13, 2015 at 10:30:40AM +0100, Ian Campbell wrote: > > On Wed, 2015-05-13 at 10:54 +0200, Juergen Gross wrote: > > > Hi, > > > > > > while trying to build a pvusb backend in qemu I think I've found a > > > general issue in xl: qemu for

Re: [Xen-devel] qemu device model question

2015-05-13 Thread Wei Liu
On Wed, May 13, 2015 at 10:30:40AM +0100, Ian Campbell wrote: > On Wed, 2015-05-13 at 10:54 +0200, Juergen Gross wrote: > > Hi, > > > > while trying to build a pvusb backend in qemu I think I've found a > > general issue in xl: qemu for pv-domains is started only at domain > > creation and only if

Re: [Xen-devel] qemu device model question

2015-05-13 Thread Ian Campbell
On Wed, 2015-05-13 at 10:54 +0200, Juergen Gross wrote: > Hi, > > while trying to build a pvusb backend in qemu I think I've found a > general issue in xl: qemu for pv-domains is started only at domain > creation and only if there is at least one backend in qemu required. > > If there is no qemu

[Xen-devel] qemu device model question

2015-05-13 Thread Juergen Gross
Hi, while trying to build a pvusb backend in qemu I think I've found a general issue in xl: qemu for pv-domains is started only at domain creation and only if there is at least one backend in qemu required. If there is no qemu process started for the domain at creation time it will be impossible