Re: [Xen-devel] [PATCH v2 2/3] xen-platform: add support for unplugging NVMe disks...

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Wed, 25 Jan 2017, Paul Durrant wrote:
> On 25 January 2017, at 17:54, Stefano Stabellini <sstabellini@xxxxxxxxxx> 
> wrote:
> 
> >
> >
> >On Wed, 25 Jan 2017, Paul Durrant wrote:
> >> > -----Original Message-----
> >> > From: Stefano Stabellini [mailto:sstabellini@xxxxxxxxxx]
> >> > Sent: 24 January 2017 23:49
> >> > To: Paul Durrant <Paul.Durrant@xxxxxxxxxx>
> >> > Cc: qemu-devel@xxxxxxxxxx; xen-devel@xxxxxxxxxxxxxxxxxxxx; Stefano
> >> > Stabellini <sstabellini@xxxxxxxxxx>; Anthony Perard
> >> > <anthony.perard@xxxxxxxxxx>; Michael S. Tsirkin <mst@xxxxxxxxxx>; Paolo
> >> > Bonzini <pbonzini@xxxxxxxxxx>; Richard Henderson <rth@xxxxxxxxxxx>;
> >> > Eduardo Habkost <ehabkost@xxxxxxxxxx>; olaf@xxxxxxxxx
> >> > Subject: Re: [PATCH v2 2/3] xen-platform: add support for unplugging NVMe
> >> > disks...
> >> >
> >> > On Tue, 24 Jan 2017, Paul Durrant wrote:
> >> > > ...not just IDE and SCSI.
> >> > >
> >> > > This patch allows the Xen tool-stack to fully support of NVMe as an
> >> > > emulated disk type.
> >> > >
> >> > > Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
> >> >
> >> > Please update docs/misc/hvm-emulated-unplug.markdown in the Xen
> >> > repository first. It might be also worth clarifying that `1` actually
> >> > means all disks, not just IDE disks. Then, please add a reference to
> >> > that commit in the description of this patch.
> >> >
> >>
> >> Patch posted to remove 'IDE' from the documentation for value '1'. 
> >> Awaiting ack.
> >Done.
> >When you repost this patch, could you also add to the description a
> >reference to the commit that enables NVMe in QEMU with Xen? I guess it
> >is a libxl commit?
> 
> I think there is a chicken and egg issue here. Wei wanted to ensure that QEMU 
> is able to unplug
> NVMe drives before accepting my patch to libxl.

No problems. In that case, please add a link to the xen-devel email
thread.


> >> > > ---
> >> > > Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
> >> > > Cc: Anthony Perard <anthony.perard@xxxxxxxxxx>
> >> > > Cc: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
> >> > > Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> >> > > Cc: Richard Henderson <rth@xxxxxxxxxxx>
> >> > > Cc: Eduardo Habkost <ehabkost@xxxxxxxxxx>
> >> > > ---
> >> > >  hw/i386/xen/xen_platform.c | 1 +
> >> > >  1 file changed, 1 insertion(+)
> >> > >
> >> > > diff --git a/hw/i386/xen/xen_platform.c b/hw/i386/xen/xen_platform.c
> >> > > index f50915f..7d41ebb 100644
> >> > > --- a/hw/i386/xen/xen_platform.c
> >> > > +++ b/hw/i386/xen/xen_platform.c
> >> > > @@ -120,6 +120,7 @@ static void unplug_disks(PCIBus *b, PCIDevice *d,
> >> > void *o)
> >> > >          break;
> >> > >
> >> > >      case PCI_CLASS_STORAGE_SCSI:
> >> > > +    case PCI_CLASS_STORAGE_EXPRESS:
> >> > >          object_unparent(OBJECT(d));
> >> > >          break;
> >> > >
> >> > > --
> >> > > 2.1.4
> >> > >
> >>
> >
> 
> 
>

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