platform/x86/amd/hsmp: Family 1Ah Model 50h-5Fh HSMP and metrics

Hi,

This series extends the AMD HSMP platform driver and UAPI for Family 1Ah,
Model 50h-5Fh: new HSMP message IDs (including PQoS-related IDs in the
first patch), Zen 6 metric table layout in UAPI, relaxed response_sz
handling against the descriptor table, firmware-reported metric table
sizing for ioremap and reads, HSMP_IOCTL_GET_TELEMETRY_DATA on the
existing character device for a single-shot full-table copy (avoiding
sysfs PAGE_SIZE limits and torn reads), ACPI enablement for protocol
version 7 tables, Spectre-v1 hardening on user-controlled indices, and
per-socket guard(mutex) around metric table refresh and copy.
Documentation is updated in Documentation/arch/x86/amd_hsmp.rst.

The series is bisect-safe: each commit was built with
  make W=1 M=drivers/platform/x86/amd/hsmp
after the previous commits, and scripts/checkpatch.pl --strict -g <rev>
was run on each change.

v4 submission (lore.kernel.org)
---------------------------------
https://lore.kernel.org/platform-driver-x86/PH8PR12MB7325...

Changes since v4
----------------
* The HSMP_IOCTL_GET_TELEMETRY_DATA
  commit (5/8) keeps Spectre-v1 mitigation for the telemetry ioctl path
  limited to clamping req.sock_ind before indexing hsmp_pdev.sock[].
  The array_index_nospec() on msg.msg_id at the entry to
  hsmp_ioctl_msg() is moved into a dedicated follow-up patch (6/8) with
  its own changelog, so review of the ioctl/UAPI patch and the generic
  ioctl message path are separated.

* Patch 1/8 documents the additional PQoS-related HSMP message IDs
  (0x3B / 0x3C) alongside the Family 1Ah Model 50h-5Fh message work; the
  subject line is shortened to "Add HSMP messages ..." (drop "new") for
  consistency with the expanded scope of that commit.

Thanks,
Muralidhara M K

Muralidhara M K (8):
  platform/x86/amd/hsmp: Add HSMP messages for Family 1Ah, Model 50h-5Fh
  platform/x86/amd/hsmp: Add UAPI structures for Family 1Ah Model
    50h-5Fh metrics table
  platform/x86/amd/hsmp: Unify response_sz validation to an upper-bound
    check
  platform/x86/amd/hsmp: Source metric-table size from firmware
  platform/x86/amd/hsmp: Add IOCTL_GET_TELEMETRY_DATA for metric table
    reads
  platform/x86/amd/hsmp: Sanitize hsmp_ioctl_msg() msg_id for Spectre v1
  platform/x86/amd/hsmp: Enable HSMP_PROTO_VER7 metric tables on the
    ACPI driver via the IOCTL
  platform/x86/amd/hsmp: Make metric table read locking use guard(mutex)

 Documentation/arch/x86/amd_hsmp.rst  |  30 ++-
 arch/x86/include/uapi/asm/amd_hsmp.h | 310 +++++++++++++++++++++++++--
 drivers/platform/x86/amd/hsmp/acpi.c |  23 +-
 drivers/platform/x86/amd/hsmp/hsmp.c | 168 +++++++++++++--
 drivers/platform/x86/amd/hsmp/hsmp.h |   6 +-
 5 files changed, 500 insertions(+), 37 deletions(-)

-- 
2.34.1