[patch v2 00/38] x86/cpu: Rework the topology evaluation

[Thomas Gleixner]

Hi!

This is the follow up to V1:

  https://lore.kernel.org/lkml/20230724155329.474037902@xxxxxxxxxxxxx

which addresses the review feedback and some minor fallout I observed in my
testing of the work based on top.

TLDR:

This reworks the way how topology information is evaluated via CPUID
in preparation for a larger topology management overhaul to address
shortcomings of the current code vs. hybrid systems and systems which make
use of the extended topology domains in leaf 0x1f. Aside of that it's an
overdue spring cleaning to get rid of accumulated layers of duct tape and
haywire.

What changed vs. V1:

  - Fixed an issue vs. the logical die/pkg management as the current
    code (ab)uses cpuinfo for persistant storage.

  - Consolidated APIC ID usage on u32 and ditched the u16 limitation

  - Addressed the review feedback from Peter and Arjan

  - Added a new patch which gets rid of XENPV fiddling in the cpuinfo
    state. That needs some testing on XENPV obviously. The relevant
    patches are #22 and #37

I did not pick up any of the tested by tags yet. I hope people can run it
once more. Neither did I add the Ack from Peter.

The series is based on the APIC cleanup series:

  https://lore.kernel.org/lkml/20230724131206.500814398@xxxxxxxxxxxxx

and also available on top of that from git:

 git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git topo-cpuid-v2

Thanks,

	tglx
---
 Documentation/arch/x86/topology.rst       |   12 -
 a/arch/x86/kernel/cpu/topology.c          |  168 ---------------------
 arch/x86/events/amd/core.c                |    2 
 arch/x86/events/amd/uncore.c              |    2 
 arch/x86/events/intel/uncore.c            |    2 
 arch/x86/hyperv/hv_vtl.c                  |    2 
 arch/x86/include/asm/apic.h               |   32 +---
 arch/x86/include/asm/cacheinfo.h          |    3 
 arch/x86/include/asm/cpuid.h              |   32 ++++
 arch/x86/include/asm/mpspec.h             |    2 
 arch/x86/include/asm/processor.h          |   60 +++++--
 arch/x86/include/asm/smp.h                |    4 
 arch/x86/include/asm/topology.h           |   51 +++++-
 arch/x86/include/asm/x86_init.h           |    2 
 arch/x86/kernel/acpi/boot.c               |    4 
 arch/x86/kernel/amd_nb.c                  |    8 -
 arch/x86/kernel/apic/apic.c               |   14 -
 arch/x86/kernel/apic/apic_common.c        |    4 
 arch/x86/kernel/apic/apic_flat_64.c       |   13 -
 arch/x86/kernel/apic/apic_noop.c          |    9 -
 arch/x86/kernel/apic/apic_numachip.c      |   21 --
 arch/x86/kernel/apic/bigsmp_32.c          |   10 -
 arch/x86/kernel/apic/local.h              |    6 
 arch/x86/kernel/apic/probe_32.c           |   10 -
 arch/x86/kernel/apic/x2apic_cluster.c     |    1 
 arch/x86/kernel/apic/x2apic_phys.c        |   10 -
 arch/x86/kernel/apic/x2apic_uv_x.c        |   67 +-------
 arch/x86/kernel/cpu/Makefile              |    5 
 arch/x86/kernel/cpu/amd.c                 |  156 --------------------
 arch/x86/kernel/cpu/cacheinfo.c           |   51 ++----
 arch/x86/kernel/cpu/centaur.c             |    4 
 arch/x86/kernel/cpu/common.c              |  111 +-------------
 arch/x86/kernel/cpu/cpu.h                 |   14 +
 arch/x86/kernel/cpu/hygon.c               |  133 -----------------
 arch/x86/kernel/cpu/intel.c               |   38 ----
 arch/x86/kernel/cpu/mce/amd.c             |    4 
 arch/x86/kernel/cpu/mce/apei.c            |    4 
 arch/x86/kernel/cpu/mce/core.c            |    4 
 arch/x86/kernel/cpu/mce/inject.c          |    7 
 arch/x86/kernel/cpu/proc.c                |    8 -
 arch/x86/kernel/cpu/zhaoxin.c             |   18 --
 arch/x86/kernel/kvm.c                     |    6 
 arch/x86/kernel/sev.c                     |    2 
 arch/x86/kernel/smpboot.c                 |   97 +++++++-----
 arch/x86/kernel/vsmp_64.c                 |   13 -
 arch/x86/mm/amdtopology.c                 |   35 ++--
 arch/x86/mm/numa.c                        |    4 
 arch/x86/xen/apic.c                       |   14 -
 arch/x86/xen/smp_pv.c                     |    3 
 b/arch/x86/kernel/cpu/debugfs.c           |   97 ++++++++++++
 b/arch/x86/kernel/cpu/topology.h          |   51 ++++++
 b/arch/x86/kernel/cpu/topology_amd.c      |  179 +++++++++++++++++++++++
 b/arch/x86/kernel/cpu/topology_common.c   |  233 ++++++++++++++++++++++++++++++
 b/arch/x86/kernel/cpu/topology_ext.c      |  136 +++++++++++++++++
 drivers/edac/amd64_edac.c                 |    4 
 drivers/edac/mce_amd.c                    |    4 
 drivers/gpu/drm/amd/amdkfd/kfd_topology.c |    2 
 drivers/hwmon/fam15h_power.c              |    7 
 drivers/scsi/lpfc/lpfc_init.c             |    8 -
 drivers/virt/acrn/hsm.c                   |    2 
 60 files changed, 1049 insertions(+), 956 deletions(-)