[00/14] IFS multi test image support and misc changes

  Initial implementation of IFS driver assumed a single IFS test image
file with a fixed name.

Subsequently, it became evident that supporting more than one
test image file is needed to provide more comprehensive
test coverage. (Test coverage in this scenario refers to testing
more transistors in the core to identify faults).

This series makes the driver aware of multiple scan test image files,
modifies IFS test image file headers to make it fully compatible
with microcode headers and adds a few other bug fixes and changes.

Patch organization:
Patches 1, 2, and 3: bug fixes
Patch 4: Removes image loading during init path 
Patch 5, 6 and 7: exports a couple of microcode/intel.c functions
                  for use by driver
Patch 8: Adds Meta-data support in microcode file

Rest of them are IFS driver changes
Patches 9 and 10: IFS header format changes to make it fully compatible
 to intel microcode header format
Patches 11, 12 and 13: native support for multiple scan test image files
Patch 14: reverts the broken flag

Ashok Raj (1):
  x86/microcode/intel: Meta-data support in microcode file

Jithu Joseph (13):
  platform/x86/intel/ifs: Remove unused selection
  platform/x86/intel/ifs: Propagate load failure error code
  platform/x86/intel/ifs: return a more appropriate Error code
  platform/x86/intel/ifs: Remove image loading during init
  x86/microcode/intel: Expose find_matching_signature() for IFS
  x86/microcode/intel: Use appropriate type in microcode_sanity_check()
  x86/microcode/intel: Expose microcode_sanity_check()
  platform/x86/intel/ifs: Use generic microcode headers and functions
  platform/x86/intel/ifs: Add metadata validation
  platform/x86/intel/ifs: Remove reload sysfs entry
  platform/x86/intel/ifs: Add current_batch sysfs entry
  Documentation/ABI: Update IFS ABI doc
  Revert "platform/x86/intel/ifs: Mark as BROKEN"

 arch/x86/include/asm/microcode_intel.h        |  25 ++-
 drivers/platform/x86/intel/ifs/ifs.h          |  27 ++-
 arch/x86/kernel/cpu/microcode/intel.c         |  81 ++++++--
 drivers/platform/x86/intel/ifs/core.c         |   7 +-
 drivers/platform/x86/intel/ifs/load.c         | 174 +++++++++---------
 drivers/platform/x86/intel/ifs/runtest.c      |  10 +-
 drivers/platform/x86/intel/ifs/sysfs.c        |  41 +++--
 .../ABI/testing/sysfs-platform-intel-ifs      |  30 +--
 drivers/platform/x86/intel/ifs/Kconfig        |   4 -
 9 files changed, 243 insertions(+), 156 deletions(-)


base-commit: f76349cf41451c5c42a99f18a9163377e4b364ff
  

Hi Jithu,

On 10/21/2022 1:33 PM, Jithu Joseph wrote:

> This series makes the driver aware of multiple scan test image files,
> modifies IFS test image file headers to make it fully compatible
> with microcode headers and adds a few other bug fixes and changes.
> 

I am done with my review comments. In general, the patches look OK to me 
apart from the minor changes that we discussed.

(If some of my suggestions seem out of scope for this series then maybe 
you can follow-up with a separate patch later to avoid complicating this 
series.)

Thanks,
Sohil
  

Hi,

On 10/21/22 22:33, Jithu Joseph wrote:
> Initial implementation of IFS driver assumed a single IFS test image
> file with a fixed name.
> 
> Subsequently, it became evident that supporting more than one
> test image file is needed to provide more comprehensive
> test coverage. (Test coverage in this scenario refers to testing
> more transistors in the core to identify faults).
> 
> This series makes the driver aware of multiple scan test image files,
> modifies IFS test image file headers to make it fully compatible
> with microcode headers and adds a few other bug fixes and changes.
> 
> Patch organization:
> Patches 1, 2, and 3: bug fixes
> Patch 4: Removes image loading during init path 
> Patch 5, 6 and 7: exports a couple of microcode/intel.c functions
>                   for use by driver
> Patch 8: Adds Meta-data support in microcode file
> 
> Rest of them are IFS driver changes
> Patches 9 and 10: IFS header format changes to make it fully compatible
>  to intel microcode header format
> Patches 11, 12 and 13: native support for multiple scan test image files
> Patch 14: reverts the broken flag

Thank you for your work on this. Due to personal circumstances I have
been unable to do any pdx86 patch review for the last 2 weeks.

I see that there have been lots of comments on this series already please
send a new version 2 addressing all the existing comments. Then I will
review version 2 once posted.

Regards,

Hans





> 
> Ashok Raj (1):
>   x86/microcode/intel: Meta-data support in microcode file
> 
> Jithu Joseph (13):
>   platform/x86/intel/ifs: Remove unused selection
>   platform/x86/intel/ifs: Propagate load failure error code
>   platform/x86/intel/ifs: return a more appropriate Error code
>   platform/x86/intel/ifs: Remove image loading during init
>   x86/microcode/intel: Expose find_matching_signature() for IFS
>   x86/microcode/intel: Use appropriate type in microcode_sanity_check()
>   x86/microcode/intel: Expose microcode_sanity_check()
>   platform/x86/intel/ifs: Use generic microcode headers and functions
>   platform/x86/intel/ifs: Add metadata validation
>   platform/x86/intel/ifs: Remove reload sysfs entry
>   platform/x86/intel/ifs: Add current_batch sysfs entry
>   Documentation/ABI: Update IFS ABI doc
>   Revert "platform/x86/intel/ifs: Mark as BROKEN"
> 
>  arch/x86/include/asm/microcode_intel.h        |  25 ++-
>  drivers/platform/x86/intel/ifs/ifs.h          |  27 ++-
>  arch/x86/kernel/cpu/microcode/intel.c         |  81 ++++++--
>  drivers/platform/x86/intel/ifs/core.c         |   7 +-
>  drivers/platform/x86/intel/ifs/load.c         | 174 +++++++++---------
>  drivers/platform/x86/intel/ifs/runtest.c      |  10 +-
>  drivers/platform/x86/intel/ifs/sysfs.c        |  41 +++--
>  .../ABI/testing/sysfs-platform-intel-ifs      |  30 +--
>  drivers/platform/x86/intel/ifs/Kconfig        |   4 -
>  9 files changed, 243 insertions(+), 156 deletions(-)
> 
> 
> base-commit: f76349cf41451c5c42a99f18a9163377e4b364ff
  

On 11/7/2022 1:24 AM, Hans de Goede wrote:
> I see that there have been lots of comments on this series already please
> send a new version 2 addressing all the existing comments. Then I will
> review version 2 once posted.

Thanks for getting back Hans. I just posted updated v2 version of the series.

Jithu