linux-kernel - Re: [PATCH 2/2] misc: smpro-errmon: Add dimm training failure syndrome

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Message-ID: <Y+4h0V+LtaX8745A@kroah.com>
Date:   Thu, 16 Feb 2023 13:30:09 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Quan Nguyen <quan@...amperecomputing.com>
Cc:     Paul Menzel <pmenzel@...gen.mpg.de>, Arnd Bergmann <arnd@...db.de>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>, linux-kernel@...r.kernel.org,
        openbmc@...ts.ozlabs.org,
        Open Source Submission <patches@...erecomputing.com>,
        Thang Nguyen <thang@...amperecomputing.com>,
        Phong Vo <phong@...amperecomputing.com>
Subject: Re: [PATCH 2/2] misc: smpro-errmon: Add dimm training failure
 syndrome

On Thu, Feb 16, 2023 at 10:22:14AM +0700, Quan Nguyen wrote:
> 
> 
> On 15/02/2023 14:33, Paul Menzel wrote:
> > Dear Quan,
> > 
> > 
> > Thank you for your patch.
> > 
> 
> Thanks Paul for the review.
> 
> > Am 14.02.23 um 07:45 schrieb Quan Nguyen:
> > > Adds event_dimm[0-15]_syndrome sysfs to report the failure syndrome
> > > to BMC when DIMM training failed.
> > 
> > Where you able to verify that it works? Out of curiosity, how?
> > 
> 
> Yes, we verified it by injecting DIMM errors and confirm that errors was
> reported correctly via sysfs.
> For about how to do error injection, we may  need to refer to section 3.2
> Memory Error Group in Altra Family RAS Error Injection User Manual. It is
> shared in our Ampere Customer Connect [1]. The latest version is
> v1.00_20220329.
> 
> [1] https://connect.amperecomputing.com
> 
> > > Signed-off-by: Quan Nguyen <quan@...amperecomputing.com>
> > > ---
> > >   .../sysfs-bus-platform-devices-ampere-smpro   | 10 +++
> > >   drivers/misc/smpro-errmon.c                   | 77 +++++++++++++++++++
> > >   2 files changed, 87 insertions(+)
> > > 
> > > diff --git
> > > a/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro
> > > b/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro
> > > index d4e3f308c451..c35f1d45e656 100644
> > > --- a/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro
> > > +++ b/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro
> > > @@ -265,6 +265,16 @@ Description:
> > >           For more details, see section `5.7 GPI Status Registers
> > > and 5.9 Memory Error Register Definitions,
> > >           Altra Family Soc BMC Interface Specification`.
> > > +What:
> > > /sys/bus/platform/devices/smpro-errmon.*/event_dimm[0-15]_syndrome
> > > +KernelVersion:    6.1
> > 
> > Should it be 6.2, as it probably won’t make it into 6.1?
> > 
> 
> Thanks for the catch. Will fix in next version.

Should be 6.3, it's missed the 6.2 merge window cycle, sorry.

thanks,

greg k-h