Re: [Xen-devel] [PATCH v3 3/3] AMD IOMMU: Check io_handler before registering mmio handler

[Suravee Suthikulanit <suravee.suthikulpanit@xxxxxxx>]

On 5/23/2016 3:23 AM, Paul Durrant wrote:
> > -----Original Message-----
> > > From: suravee.suthikulpanit@xxxxxxx
> > > [mailto:suravee.suthikulpanit@xxxxxxx]
> > > Sent: 22 May 2016 00:43
> > > To: xen-devel@xxxxxxxxxxxxx; Paul Durrant; jbeulich@xxxxxxxx; George
> > > Dunlap
> > > Cc: Keir (Xen.org); Suravee Suthikulpanit; Suravee Suthikulapanit
> > > Subject: [PATCH v3 3/3] AMD IOMMU: Check io_handler before registering
> > > mmio handler
> > >
> > > From: Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx>
> > >
> > > guest_iommu_init tries to register mmio handler before HVM domain
> > > is initialized. This cause registration to silently failing.
> > > This patch adds a sanitiy check and puts out error message.
> > >
> > > Signed-off-by: Suravee Suthikulapanit <suravee.suthikulpanit@xxxxxxx>
> This patch is now defunct isn't it?
>
>   Paul
It is no longer required, but I think this is a good sanity check in 
case something changes in the future and causing this to be called 
before the HVM I/O handler initialized.
Thanks,
Suravee

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