On 15/07/2019 05:14, Daniel Henrique Barboza wrote:
This patch fixed an issue I was experiencing with virsh start/destroy
of guests with mlx5 and GPU passthrough in a Power 9 server. I
believe it's a similar situation which Alexey described in the post
commit msg.
Tested-by: Daniel Henrique
On Sun, 2019-07-14 at 21:44 +0200, Cédric Le Goater wrote:
> > Well, best is probably to do just that though, but call it something
> > like ppc_md.orphan_irq() or something like that instead. Another option
> > as you mention is to try to scrub queues, but that's trickier to do due
> > to the lock
This patch fixed an issue I was experiencing with virsh start/destroy
of guests with mlx5 and GPU passthrough in a Power 9 server. I
believe it's a similar situation which Alexey described in the post
commit msg.
Tested-by: Daniel Henrique Barboza
On 7/12/19 5:20 AM, Alexey Kardashevskiy wrot
On 14/07/2019 03:31, Benjamin Herrenschmidt wrote:
> On Sat, 2019-07-13 at 18:53 +1000, Alexey Kardashevskiy wrote:
>>
>> On 13/07/2019 09:47, Benjamin Herrenschmidt wrote:
>>> On Fri, 2019-07-12 at 19:37 +1000, Alexey Kardashevskiy wrote:
>>>
>>>
> https://git.kernel.org/pub/scm/linux/kernel/
On Sat, 2019-07-13 at 18:53 +1000, Alexey Kardashevskiy wrote:
>
> On 13/07/2019 09:47, Benjamin Herrenschmidt wrote:
> > On Fri, 2019-07-12 at 19:37 +1000, Alexey Kardashevskiy wrote:
> > >
> >
> >
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/powerpc/kernel/irq.
On 13/07/2019 09:47, Benjamin Herrenschmidt wrote:
> On Fri, 2019-07-12 at 19:37 +1000, Alexey Kardashevskiy wrote:
>>
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/powerpc/kernel/irq.c#n614
>>
>> If so, then in order to do EOI, I'll need the desc which is gon
On Fri, 2019-07-12 at 19:37 +1000, Alexey Kardashevskiy wrote:
>
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/powerpc/kernel/irq.c#n614
>
> If so, then in order to do EOI, I'll need the desc which is gone, or
> I am missing the point?
All you need is drop the loc
On 12/07/2019 18:29, Benjamin Herrenschmidt wrote:
On Fri, 2019-07-12 at 18:20 +1000, Alexey Kardashevskiy wrote:
diff --git a/arch/powerpc/sysdev/xive/common.c
b/arch/powerpc/sysdev/xive/common.c
index 082c7e1c20f0..65742e280337 100644
--- a/arch/powerpc/sysdev/xive/common.c
+++ b/arch/pow
On Fri, 2019-07-12 at 18:20 +1000, Alexey Kardashevskiy wrote:
>
> diff --git a/arch/powerpc/sysdev/xive/common.c
> b/arch/powerpc/sysdev/xive/common.c
> index 082c7e1c20f0..65742e280337 100644
> --- a/arch/powerpc/sysdev/xive/common.c
> +++ b/arch/powerpc/sysdev/xive/common.c
> @@ -148,8 +148,12
There is a race between releasing an irq on one cpu and fetching it
from XIVE on another cpu as there does not seem to be any locking between
these, probably because xive_irq_chip::irq_shutdown() is supposed to
remove the irq from all queues in the system which it does not do.
As a result, when su
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