[PATCH v2 0/6] x86: Disentangle <asm/processor.h> dependency on CPUID headers

["Ahmed S. Darwish" <darwi@linutronix.de>]

Hi,

Changelog v2
~~~~~~~~~~~~

Remove all CPUID includes from <asm/processor.h> since only the upcoming
CPUID model needed <asm/processor.h> to include <asm/cpuid/types.h> — not
current mainline code.

Let arch/x86/kvm/reverse_cpuid.h include <asm/cpuid/types.h> since it
references its CPUID_EAX to CPUID_EDX macros.  At this series v1, it
implicitly included the CPUID types header through <asm/cpufeature.h>
through <asm/processor.h>.

Drop the "x86/cpuid: Rename cpuid_leaf()/cpuid_subleaf() APIs" patch from
this series.  After a second look, it should be part of the CPUID model
PQ instead.

Changelog v1
~~~~~~~~~~~~

( [PATCH v1 0/7] x86: Disentangle <asm/processor.h> dependency on CPUID APIs
  https://lore.kernel.org/lkml/20250612234010.572636-1-darwi@linutronix.de )
  
This series avoids including the full CPUID API from <asm/processor.h>.
That header only needs the CPUID data types and not the full API.

Let <asm/processor.h> include <asm/cpuid/types.h> instead of
<asm/cpuid/api.h>.

Modify all CPUID call sites which implicitly included the CPUID API
though <asm/processor.h> to explicitly include <asm/cpuid/api.h> instead.

This work prepares for an upcoming v4 of the CPUID model:

    [PATCH v3 00/44] x86: Introduce a centralized CPUID data model
    https://lore.kernel.org/lkml/20250612234010.572636-1-darwi@linutronix.de

where <asm/cpuid/api.h> needs to include <asm/processor.h>, thus creating
a circular dependency if not resolved beforehand…  Patches 1->19 of the
v3 above had parts of this series circular dependency disentanglement.

Per Boris' remarks above, merge the header includes reorderings into two
patches only: one patch for x86 and one for drivers.

The 0-day bot x86-32 compilation error:

    Re: [PATCH v3 41/44] x86/cpu: <asm/processor.h>: Do not include CPUID…
    https://lore.kernel.org/lkml/202506132039.imS2Pflx-lkp@intel.com

is also fixed in this series.

Beside the call sites converted at CPUID model v3 above, this series also
switches below files:

    arch/x86/kernel/cpu/microcode/core.c
    arch/x86/kernel/cpu/microcode/intel.c
    arch/x86/kernel/cpu/mshyperv.c
    drivers/cpufreq/longrun.c
    drivers/cpufreq/powernow-k7.c
    drivers/cpufreq/powernow-k8.c

to explicitly include <asm/cpuid/api.h>.

Based on v6.16-rc5.

Thanks!

8<----

Ahmed S. Darwish (6):
  x86/cpuid: Remove transitional <asm/cpuid.h> header
  ASoC: Intel: avs: Include CPUID header at file scope
  x86: Reorder headers alphabetically
  drivers: Reorder headers alphabetically
  treewide: Explicitly include CPUID headers
  x86/cpu: <asm/processor.h>: Do not include CPUID API header

 arch/x86/boot/compressed/pgtable_64.c        |  1 +
 arch/x86/boot/startup/sme.c                  |  9 +--
 arch/x86/coco/tdx/tdx.c                      |  6 +-
 arch/x86/events/amd/core.c                   |  2 +
 arch/x86/events/amd/ibs.c                    |  1 +
 arch/x86/events/amd/lbr.c                    |  2 +
 arch/x86/events/amd/power.c                  |  3 +
 arch/x86/events/amd/uncore.c                 | 15 ++---
 arch/x86/events/intel/core.c                 |  1 +
 arch/x86/events/intel/lbr.c                  |  1 +
 arch/x86/events/zhaoxin/core.c               | 12 ++--
 arch/x86/include/asm/acrn.h                  |  2 +
 arch/x86/include/asm/cpuid.h                 |  8 ---
 arch/x86/include/asm/microcode.h             |  1 +
 arch/x86/include/asm/processor.h             |  1 -
 arch/x86/include/asm/xen/hypervisor.h        |  1 +
 arch/x86/kernel/cpu/amd.c                    | 26 ++++----
 arch/x86/kernel/cpu/centaur.c                |  1 +
 arch/x86/kernel/cpu/hygon.c                  |  1 +
 arch/x86/kernel/cpu/mce/core.c               | 63 ++++++++++----------
 arch/x86/kernel/cpu/mce/inject.c             |  1 +
 arch/x86/kernel/cpu/microcode/core.c         | 23 +++----
 arch/x86/kernel/cpu/microcode/intel.c        | 12 ++--
 arch/x86/kernel/cpu/mshyperv.c               | 29 +++++----
 arch/x86/kernel/cpu/resctrl/core.c           |  6 +-
 arch/x86/kernel/cpu/resctrl/monitor.c        |  1 +
 arch/x86/kernel/cpu/scattered.c              |  3 +-
 arch/x86/kernel/cpu/sgx/main.c               |  3 +
 arch/x86/kernel/cpu/topology_amd.c           |  1 +
 arch/x86/kernel/cpu/topology_common.c        |  3 +-
 arch/x86/kernel/cpu/topology_ext.c           |  1 +
 arch/x86/kernel/cpu/transmeta.c              |  3 +
 arch/x86/kernel/cpu/zhaoxin.c                |  1 +
 arch/x86/kernel/cpuid.c                      |  1 +
 arch/x86/kernel/paravirt.c                   | 29 ++++-----
 arch/x86/kvm/cpuid.h                         |  3 +
 arch/x86/kvm/mmu/spte.c                      |  1 +
 arch/x86/kvm/reverse_cpuid.h                 |  2 +
 drivers/cpufreq/longrun.c                    |  7 ++-
 drivers/cpufreq/powernow-k7.c                | 14 ++---
 drivers/cpufreq/powernow-k8.c                | 17 +++---
 drivers/cpufreq/speedstep-lib.c              |  6 +-
 drivers/firmware/efi/libstub/x86-5lvl.c      |  1 +
 drivers/hwmon/fam15h_power.c                 | 14 +++--
 drivers/hwmon/k10temp.c                      |  2 +
 drivers/hwmon/k8temp.c                       | 12 ++--
 drivers/thermal/intel/intel_hfi.c            |  1 +
 drivers/thermal/intel/x86_pkg_temp_thermal.c | 15 ++---
 sound/soc/intel/avs/tgl.c                    | 25 +++++---
 49 files changed, 229 insertions(+), 165 deletions(-)
 delete mode 100644 arch/x86/include/asm/cpuid.h

base-commit: d7b8f8e20813f0179d8ef519541a3527e7661d3a
-- 
2.49.0