linux-kernel - Re: [PATCH V6 00/20] intel_pmc: Add telemetry API to read counters

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <c3f7a2ba-d356-4afa-bcd2-cd10e086cb2c@redhat.com>
Date:   Mon, 4 Dec 2023 14:55:11 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     "David E. Box" <david.e.box@...ux.intel.com>,
        linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org,
        ilpo.jarvinen@...ux.intel.com, rajvi.jingar@...ux.intel.com
Subject: Re: [PATCH V6 00/20] intel_pmc: Add telemetry API to read counters

Hi,

On 11/29/23 23:21, David E. Box wrote:
> On newer Intel silicon, more IP counters are being added in Intel Platform
> Monitoring Technology (PMT) telemetry spaces hosted in MMIO.  There is a
> need for the intel_pmc_core driver and other drivers to access PMT hosted
> telemetry in the kernel using an API. This patchset adds driver APIs to
> allow registering and reading telemetry entries. It makes changes to the
> intel_pmc_core driver to use these interfaces to access the low power mode
> counters that are now exclusively available from PMT.
> 
> David E. Box (15):
>   platform/x86/intel/vsec: Fix xa_alloc memory leak
>   platform/x86/intel/vsec: Remove unnecessary return
>   platform/x86/intel/vsec: Move structures to header
>   platform/x86/intel/vsec: remove platform_info from vsec device
>     structure
>   platform/x86/intel/vsec: Use cleanup.h
>   platform/x86/intel/vsec: Assign auxdev parent by argument
>   platform/x86/intel/vsec: Add base address field
>   platform/x86/intel/pmt: Add header to struct intel_pmt_entry
>   platform/x86/intel/pmt: telemetry: Export API to read telemetry
>   platform/x86/intel/pmc: Allow pmc_core_ssram_init to fail
>   platform/x86/intel/pmc: Cleanup SSRAM discovery
>   platform/x86/intel/pmc/mtl: Use return value from
>     pmc_core_ssram_init()
>   platform/x86/intel/pmc: Find and register PMC telemetry entries
>   platform/x86/intel/pmc: Add debug attribute for Die C6 counter
>   platform/x86/intel/pmc: Show Die C6 counter on Meteor Lake
> 
> Gayatri Kammela (1):
>   platform/x86/intel/vsec: Add intel_vsec_register
> 
> Rajvi Jingar (1):
>   platform/x86/intel/pmc: Display LPM requirements for multiple PMCs
> 
> Xi Pardee (3):
>   platform/x86:intel/pmc: Call pmc_get_low_power_modes from platform
>     init
>   platform/x86/intel/pmc: Retrieve LPM information using Intel PMT
>   platform/x86/intel/pmc: Read low power mode requirements for MTL-M and
>     MTL-P

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

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



> 
>  drivers/platform/x86/intel/pmc/Kconfig      |   1 +
>  drivers/platform/x86/intel/pmc/adl.c        |   2 +
>  drivers/platform/x86/intel/pmc/cnp.c        |   2 +
>  drivers/platform/x86/intel/pmc/core.c       | 185 +++++++++-----
>  drivers/platform/x86/intel/pmc/core.h       |  10 +-
>  drivers/platform/x86/intel/pmc/core_ssram.c | 265 +++++++++++++++++---
>  drivers/platform/x86/intel/pmc/icl.c        |  10 +-
>  drivers/platform/x86/intel/pmc/mtl.c        |  87 ++++++-
>  drivers/platform/x86/intel/pmc/spt.c        |  10 +-
>  drivers/platform/x86/intel/pmc/tgl.c        |   1 +
>  drivers/platform/x86/intel/pmt/class.c      |  43 +++-
>  drivers/platform/x86/intel/pmt/class.h      |  30 ++-
>  drivers/platform/x86/intel/pmt/crashlog.c   |   2 +-
>  drivers/platform/x86/intel/pmt/telemetry.c  | 193 +++++++++++++-
>  drivers/platform/x86/intel/pmt/telemetry.h  | 126 ++++++++++
>  drivers/platform/x86/intel/vsec.c           | 131 +++++-----
>  drivers/platform/x86/intel/vsec.h           |  45 +++-
>  17 files changed, 939 insertions(+), 204 deletions(-)
>  create mode 100644 drivers/platform/x86/intel/pmt/telemetry.h
> 
> 
> base-commit: b85ea95d086471afb4ad062012a4d73cd328fa86