This series is one more step towards separation of Intel/AMD support in Xen.
With all preparation work is mostly done now, it becomes possible to make build
of arch/x86/cpu/{amd.c,intel.c} files optional, depending on whether
CONFIG_{AMD,INTEL} are enabled or not.

This can be useful for builds tuned for specific platform -- by reducing dead
code that won't ever be executed on that platform anyway.

Note: this series (namely its Intel part) depends on optional PSR support patch:
https://lore.kernel.org/xen-devel/20240801084453.1163506-1-Sergiy_Kibrik@epam.com/

v1 series' discussion here:
https://lore.kernel.org/xen-devel/cover.1723196909.git.Sergiy_Kibrik@epam.com/

Changelogs are provided per-patch.

  -Sergiy
 
Sergiy Kibrik (5):
  x86/Kconfig: introduce CENTAUR, HYGON & SHANGHAI config options
  x86/amd: configurable handling of AMD-specific MSRs access
  x86/spec-ctrl: configurable Intlel/AMD-specific calculations
  x86/intel: optional build of intel.c
  x86/amd: optional build of amd.c

 xen/arch/x86/Kconfig.cpu             | 29 ++++++++++++++++++++++++++++
 xen/arch/x86/cpu/Makefile            | 12 ++++++------
 xen/arch/x86/cpu/common.c            | 12 +++++++++++-
 xen/arch/x86/hvm/svm/svm.c           |  6 ++++--
 xen/arch/x86/include/asm/amd.h       | 23 +++++++++++++++++++---
 xen/arch/x86/include/asm/processor.h |  3 ++-
 xen/arch/x86/msr.c                   |  4 ++++
 xen/arch/x86/spec_ctrl.c             | 19 ++++++++++++++----
 8 files changed, 91 insertions(+), 17 deletions(-)

-- 
2.25.1