Re: [Xen-devel] [PATCH v3 13/16] xen/arm: Add support for GIC v3

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Thu, 22 May 2014, Julien Grall wrote:
> On 22/05/14 06:58, Vijay Kilari wrote:
> > Hi Julien,
> 
> Hi Vijay,
> 
> > On Tue, May 6, 2014 at 9:17 PM, Julien Grall <julien.grall@xxxxxxxxxx>
> > wrote:
> > > On 05/06/2014 03:18 PM, Julien Grall wrote:
> > > > On 6 May 2014 15:11, Vijay Kilari <vijay.kilari@xxxxxxxxx> wrote:
> > > > >     This patch set is based on no_maintenance_interrupts_v6 branch. I
> > > > > would be glade
> > > > > if you merge this series. Also Julien's patch set also impacts this
> > > > > series.
> > > > > But for now I just rebasing only on Stefano's patch set
> > > > 
> > > > I will create a branch this afternoon with Stefano' s maintenance
> > > > interrupt v7 and my interrupt series.
> > > 
> > > I've pushed a branch with both series:
> > > 
> > > git clone git://xenbits.xen.org/people/julieng/xen-unstable.git -b
> > > for-vijay
> > 
> >     Thanks for this branch. I have observed locking issues with
> > multicore (>2 cpus).
> > Dom0 boot freezes randomly. Have u tested with >2 cpu's?.
> > I could not test your patches alone. Can you please confirm that this branch
> > is stable with multicore with GICv2?
> 
> It might be related to the hang the we see on Stefano's maintenance interrupts
> series. I think he has fixed it in his development branch.
> 
> Stefano, can you confirm it?

Yes, I found a few bugs in the series that can cause a full hypervisor
locking.
Please checkout the latest version:

http://marc.info/?l=xen-devel&m=140076202414100

I have tested it for a few consecutive days and I haven't found any
more issues. I am very sorry if it caused you any troubles.

You should also know that on another ARMv8 board the series doesn't work
correctly, because the hardware implementation of GICH_LR_HW seems to be
defective. It works fine on a Cortex A15 though.

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