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Box" To: irenic.rajneesh@gmail.com, ilpo.jarvinen@linux.intel.com, srinivas.pandruvada@linux.intel.com, xi.pardee@linux.intel.com, david.e.box@linux.intel.com Cc: hansg@kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org Subject: [PATCH V2 00/17] Add ACPI-based PMT discovery support for Intel PMC Date: Tue, 24 Mar 2026 18:48:02 -0700 Message-ID: <20260325014819.1283566-1-david.e.box@linux.intel.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable This series adds ACPI-based PMT discovery support and wires it into the Intel PMC telemetry stack for Nova Lake S. Today, PMT discovery flow is primarily PCI-oriented. Some platforms expose PMT discovery via ACPI _DSD, and PMC telemetry needs to consume that path for both standalone and companion-device cases. This series addresses that in three logical steps: 1. Prepare intel_vsec for ACPI-backed discovery 2. Refactor PMT class handling so discovery source is abstracted (PCI or ACPI) 3. Add/enable PMC consumers using ACPI discovery, including NVL SSRAM support Patches for step 1 were previously accepted. V2 includes the remaining integration patches plus a new patch addressing review feedback on cleanup.h patterns in ssram_telemetry.c. Series layout 01-06: intel_vsec cleanup/generalization for ACPI-capable discovery plumbing. Previously posted and accepted. 07-12: PMT class refactor and ACPI discovery-source support Major patches: Patch 12 - adds ACPI support in PMT driver 13-17: PMC driver integration Major patches: Patch 15 - adds ACPI discovery support in ssram driver Patch 17 - adds NVL IDs for SSRAM discovery Notable changes in V2: Patch 14 - new commit fixing __free() cleanup patterns per Ilpo'= s review David E. Box (15): platform/x86/intel/pmt: Add pre/post decode hooks around header parsing platform/x86/intel/pmt/crashlog: Split init into pre-decode platform/x86/intel/pmt/telemetry: Move overlap check to post-decode hook platform/x86/intel/pmt: Move header decode into common helper platform/x86/intel/pmt: Pass discovery index instead of resource platform/x86/intel/pmt: Unify header fetch and add ACPI source platform/x86/intel/pmc: Add PMC SSRAM Kconfig description platform/x86/intel/pmc: Add ACPI PWRM telemetry driver for Nova Lake S platform/x86/intel/pmc/ssram: Rename probe and PCI ID table for consistency platform/x86/intel/pmc/ssram: Refactor DEVID/PWRMBASE extraction into helper platform/x86/intel/pmc/ssram: Add PCI platform data platform/x86/intel/pmc/ssram_telemetry: Fix cleanup pattern for __free() variables platform/x86/intel/pmc/ssram: Add ACPI discovery scaffolding platform/x86/intel/pmc/ssram: Make PMT registration optional platform/x86/intel/pmc: Add NVL PCI IDs for SSRAM telemetry discovery Xi Pardee (2): platform/x86/intel/pmc/ssram: Use fixed-size static pmc array platform/x86/intel/pmc/ssram: Refactor memory barrier for reentrant probe drivers/platform/x86/intel/pmc/Kconfig | 25 ++ drivers/platform/x86/intel/pmc/Makefile | 2 + drivers/platform/x86/intel/pmc/core.h | 20 ++ .../platform/x86/intel/pmc/pwrm_telemetry.c | 214 ++++++++++++++ .../platform/x86/intel/pmc/ssram_telemetry.c | 267 +++++++++++++----- drivers/platform/x86/intel/pmt/class.c | 160 ++++++++++- drivers/platform/x86/intel/pmt/class.h | 20 +- drivers/platform/x86/intel/pmt/crashlog.c | 22 +- drivers/platform/x86/intel/pmt/telemetry.c | 32 +-- 9 files changed, 636 insertions(+), 126 deletions(-) create mode 100644 drivers/platform/x86/intel/pmc/pwrm_telemetry.c base-commit: a5877e921389178f994a5ec15a145d7e7ba3ec65 -- 2.43.0