linux-kernel - Re: [PATCH v4 0/9] Add Array BIST test support to IFS

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Date:   Fri, 7 Apr 2023 09:49:03 +0800
From:   Pengfei Xu <pengfei.xu@...el.com>
To:     Hans de Goede <hdegoede@...hat.com>
CC:     "Joseph, Jithu" <jithu.joseph@...el.com>,
        "markgross@...nel.org" <markgross@...nel.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "x86@...nel.org" <x86@...nel.org>, "hpa@...or.com" <hpa@...or.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "rostedt@...dmis.org" <rostedt@...dmis.org>,
        "Raj, Ashok" <ashok.raj@...el.com>,
        "Luck, Tony" <tony.luck@...el.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "platform-driver-x86@...r.kernel.org" 
        <platform-driver-x86@...r.kernel.org>,
        "patches@...ts.linux.dev" <patches@...ts.linux.dev>,
        "Shankar, Ravi V" <ravi.v.shankar@...el.com>,
        "Macieira, Thiago" <thiago.macieira@...el.com>,
        "Jimenez Gonzalez, Athenas" <athenas.jimenez.gonzalez@...el.com>,
        "Mehta, Sohil" <sohil.mehta@...el.com>, <heng.su@...el.com>
Subject: Re: [PATCH v4 0/9] Add Array BIST test support to IFS

Hi Jithu and Hans,

On 2023-03-27 at 21:10:45 +0800, Hans de Goede wrote:
> Hi,
> 
> On 3/22/23 01:33, Jithu Joseph wrote:
> > Changes in v4
> >  - Hans de Goede
> >      - Separate patch 1/9 (Separate ifs_pkg_auth) from reorganize
> >         driver data patch
> >      - Rework patch 2/9 (Reorganize driver data) to define const
> >        ifs_test_caps struct and associate its pointer to miscdevice
> >        and to remove dynamic allocation for ifs_data as was done in v3
> >      - Move load check from run_test_store to do_core_test()
> >      - Expand ABI doc to qualify which devices support which attribrutes
> >        and the device instance to test mapping
> > 
> > V3 submission:
> > Link: https://lore.kernel.org/lkml/20230301015942.462799-1-jithu.joseph@intel.com/
> > 
> > Changes in v3
> >  - GregKH 
> >     -  Separating read-only fields from rw fields in
> >        struct ifs_device (patch 1/8)
> >     -  Remove the subdirectory intel_ifs/<n> for devicenode (patch 2/8)
> >     -  Replaced an enum with #define (patch 4/8)
> >  - Dave Hansen
> >     - Remove tracing patch
> >     - ifs_array_test_core() (patch 6/8)
> >         - fix an initialization bug
> >         - other suggested changes
> >     - Use basic types in ifs_array for first two fields. (kept
> >       the union to avoid type castings)
> > 
> > v2 submission:
> > Link: https://lore.kernel.org/lkml/20230214234426.344960-1-jithu.joseph@intel.com/
> > 
> > Changes in v2
> >  - remove duplicate initializations from ifs_array_test_core()
> >    (Dave Hansen, patch 4/7)
> >  - remove bit parsing from tracing fast path to tracing 
> >    output (Steven Rostedt, patch 5/7)
> >  - move "ATTRIBUTE_GROUPS(plat_ifs_array)" to core.c and remove
> >    exporting function ifs_get_array_groups() (Greg KH, patch 3/7)
> >  - Generalized doc and ABI doc (Greg KH, patches 6/7 and 7/7)
> > 
> > v1 submission:
> > Link: https://lore.kernel.org/lkml/20230131234302.3997223-1-jithu.joseph@intel.com/
> > 
> > Array BIST is a new type of core test introduced under the Intel Infield
> > Scan (IFS) suite of tests.
> > 
> > Emerald Rapids (EMR) is the first CPU to support Array BIST.
> > Array BIST performs tests on some portions of the core logic such as
> > caches and register files. These are different portions of the silicon
> > compared to the parts tested by Scan at Field (SAF).
> > 
> > Unlike SAF, Array BIST doesn't require any test content to be loaded.
> 
> Thank you for your patch-series, I've applied the series to my
> review-hans branch:
> https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans
> 
> Note it will show up in my review-hans branch once I've pushed my
> local branch there, which might take a while.
> 
> Once I've run some tests on this branch the patches there will be
> added to the platform-drivers-x86/for-next branch and eventually
> will be included in the pdx86 pull-request to Linus for the next
> merge-window.
> 
> Regards,
> 
> Hans
> 
  I have tested the IFS Array BIST function on EMR and Array BIST function
  was passed.

Tested-by: Pengfei Xu <pengfei.xu@...el.com>

Thanks!
BR.
-Pengfei

> 
> 
> 
> > 
> > Jithu Joseph (9):
> >   platform/x86/intel/ifs: Separate ifs_pkg_auth from ifs_data
> >   platform/x86/intel/ifs: Reorganize driver data
> >   platform/x86/intel/ifs: IFS cleanup
> >   x86/include/asm/msr-index.h: Add IFS Array test bits
> >   platform/x86/intel/ifs: Introduce Array Scan test to IFS
> >   platform/x86/intel/ifs: Sysfs interface for Array BIST
> >   platform/x86/intel/ifs: Implement Array BIST test
> >   platform/x86/intel/ifs: Update IFS doc
> >   Documentation/ABI: Update IFS ABI doc
> > 
> >  arch/x86/include/asm/msr-index.h              |  2 +
> >  drivers/platform/x86/intel/ifs/ifs.h          | 68 ++++++++++----
> >  drivers/platform/x86/intel/ifs/core.c         | 81 +++++++++++-----
> >  drivers/platform/x86/intel/ifs/load.c         |  9 +-
> >  drivers/platform/x86/intel/ifs/runtest.c      | 94 ++++++++++++++++++-
> >  drivers/platform/x86/intel/ifs/sysfs.c        | 21 ++---
> >  .../ABI/testing/sysfs-platform-intel-ifs      | 17 +++-
> >  7 files changed, 229 insertions(+), 63 deletions(-)
> > 
> > 
> > base-commit: e8d018dd0257f744ca50a729e3d042cf2ec9da65
>