On Thu, 2026-03-12 at 18:51 -0700, David E. Box wrote: > This series adds ACPI-based PMT discovery support and wires it into > the > Intel PMC telemetry stack for Nova Lake S.
I think this series is v7, missing patch prefix for versions. Thanks, Srinivas > > 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 1–6 were previously posted here: > https://lore.kernel.org/all/[email protected]/ > > Series layout > > 01-06: intel_vsec cleanup/generalization for ACPI-capable > discovery > plumbing. Previous changelog up to V7 included. > Major patches: > Patch 6 - adds ACPI support in VSEC driver > > 07-12: PMT class refactor and ACPI discovery-source support > Major patches: > Patch 12 - adds ACPI support in PMT driver > > 13-22: PMC driver integration > Major patches: > Patch 14 - adds new ACPI platform driver > Patch 20 - adds ACPI discovery support in ssram driver > Patch 22 - adds NVL IDs for SSRAM discovery > > David E. Box (20): > platform/x86/intel/vsec: Refactor base_addr handling > platform/x86/intel/vsec: Make driver_data info const > platform/x86/intel/vsec: Decouple add/link helpers from PCI > platform/x86/intel/vsec: Switch exported helpers from pci_dev to > device > platform/x86/intel/vsec: Return real error codes from registration > path > platform/x86/intel/vsec: Plumb ACPI PMT discovery tables through > vsec > 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: 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/gpu/drm/xe/xe_debugfs.c | 2 +- > drivers/gpu/drm/xe/xe_hwmon.c | 2 +- > drivers/gpu/drm/xe/xe_vsec.c | 7 +- > drivers/gpu/drm/xe/xe_vsec.h | 4 +- > drivers/platform/x86/intel/pmc/Kconfig | 25 ++ > drivers/platform/x86/intel/pmc/Makefile | 2 + > drivers/platform/x86/intel/pmc/core.c | 4 +- > drivers/platform/x86/intel/pmc/core.h | 17 ++ > .../platform/x86/intel/pmc/pwrm_telemetry.c | 227 ++++++++++++++++ > .../platform/x86/intel/pmc/ssram_telemetry.c | 254 ++++++++++++++-- > -- > drivers/platform/x86/intel/pmt/class.c | 170 ++++++++++-- > drivers/platform/x86/intel/pmt/class.h | 25 +- > drivers/platform/x86/intel/pmt/crashlog.c | 16 +- > drivers/platform/x86/intel/pmt/discovery.c | 4 +- > drivers/platform/x86/intel/pmt/telemetry.c | 45 +--- > drivers/platform/x86/intel/pmt/telemetry.h | 12 +- > drivers/platform/x86/intel/sdsi.c | 5 +- > drivers/platform/x86/intel/vsec.c | 121 +++++---- > drivers/platform/x86/intel/vsec_tpmi.c | 8 +- > include/linux/intel_vsec.h | 39 ++- > 20 files changed, 784 insertions(+), 205 deletions(-) > create mode 100644 drivers/platform/x86/intel/pmc/pwrm_telemetry.c > > > base-commit: 11439c4635edd669ae435eec308f4ab8a0804808
