Hello Michael,
On Mon, Jan 14, 2019 at 12:11:44PM -0600, Michael Bringmann wrote:
> On 1/9/19 12:08 AM, Gautham R Shenoy wrote:
>
> > I did some testing during the holidays. Here are the observations:
> >
> > 1) With just your patch (without any additional debug patch), if I run
> > DLPAR on
On 1/9/19 12:08 AM, Gautham R Shenoy wrote:
> I did some testing during the holidays. Here are the observations:
>
> 1) With just your patch (without any additional debug patch), if I run
> DLPAR on /off operations on a system that has SMT=off, I am able to
> see a crash involving RTAS stack
Hello Thiago,
Wish you a happy 2019!
On Sat, Dec 08, 2018 at 12:40:52AM -0200, Thiago Jung Bauermann wrote:
>
> Gautham R Shenoy writes:
> > On Fri, Dec 07, 2018 at 04:13:11PM +0530, Gautham R Shenoy wrote:
> >> Sure. I will test the patch and report back.
> >
> > I added the following debug
Note from Scott Mayes on latest crash:
Michael,
Since the partition crashed, I was able to get the last .2 seconds worth of
RTAS call trace leading up to the crash.
Best I could tell from that bit of trace was that the removal of a processor
involved the following steps:
-- Call to stop-self
Hello Michael,
Michael Bringmann writes:
> I have asked Scott Mayes to take a look at one of these crashes from
> the phyp side. I will let you know if he finds anything notable.
Thanks! It might make sense to test whether booting with
cede_offline=off makes the bug go away.
One suspicion
I have asked Scott Mayes to take a look at one of these crashes from
the phyp side. I will let you know if he finds anything notable.
Michael
On 12/07/2018 08:40 PM, Thiago Jung Bauermann wrote:
>
> Gautham R Shenoy writes:
>> On Fri, Dec 07, 2018 at 04:13:11PM +0530, Gautham R Shenoy wrote:
Gautham R Shenoy writes:
> On Fri, Dec 07, 2018 at 04:13:11PM +0530, Gautham R Shenoy wrote:
>> Sure. I will test the patch and report back.
>
> I added the following debug patch on top of your patch, and after an
> hour's run, the system crashed. Appending the log at the end.
Thank you very
On Fri, Dec 07, 2018 at 04:13:11PM +0530, Gautham R Shenoy wrote:
> Hi Thiago,
>
>
> Sure. I will test the patch and report back.
I added the following debug patch on top of your patch, and after an
hour's run, the system crashed. Appending the log at the end.
I suppose we still need to
Hi Thiago,
On Thu, Dec 06, 2018 at 03:28:17PM -0200, Thiago Jung Bauermann wrote:
[..snip..]
>
>
> I posted a similar patch last year, but I wasn't able to arrive at a
> root cause analysis like you did:
>
>
https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-February/153734.html
Ah! Nice.
Hello Gautham,
Gautham R. Shenoy writes:
> From: "Gautham R. Shenoy"
>
> Currently running DLPAR offline/online operations in a loop on a
> POWER9 system with SMT=off results in the following crash:
>
> [ 223.321032] cpu 112 (hwid 112) Ready to die...
> [ 223.355963] Querying DEAD? cpu 113
Hello Gautham,
Gautham R. Shenoy writes:
> From: "Gautham R. Shenoy"
>
> Currently running DLPAR offline/online operations in a loop on a
> POWER9 system with SMT=off results in the following crash:
>
> [ 223.321032] cpu 112 (hwid 112) Ready to die...
> [ 223.355963] Querying DEAD? cpu 113
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