[XEN,v2,00/15] x86: make cpu virtualization support configurable

Message

Sergiy Kibrik May 15, 2024, 8:57 a.m. UTC

This is yet another attempt to provide a means to render the cpu virtualization
technology support in Xen configurable.
Currently, irrespectively of the target platform, both AMD-V and Intel VT-x
drivers are built.
The series adds three new Kconfig controls, ALT2PM, SVM and VMX, that can be
used to switch to a finer-grained configuration for a given platform, and
reduce dead code.

The code separation is done using the new config guards.

In this series, comparing to v1, new option CONFIG_ALT2PM introduced, that
can enable/disable altp2m support independently on VMX.
More specific changes are provided in per-patch changelog. 

v1 series here:
https://lore.kernel.org/xen-devel/[e-mail]/

 -Sergiy

Sergiy Kibrik (11):
  x86/monitor: guard altp2m usage
  x86/p2m: guard altp2m routines
  x86/p2m: move altp2m-related code to separate file
  x86: introduce CONFIG_ALTP2M Kconfig option
  x86/p2m: guard altp2m code with CONFIG_ALTP2M option
  x86: guard cpu_has_{svm/vmx} macros with CONFIG_{SVM/VMX}
  x86/vpmu: guard vmx/svm calls with cpu_has_{vmx,svm}
  x86/traps: clean up superfluous #idef-s
  x86/domain: clean up superfluous #idef-s
  x86/vmx: guard access to cpu_has_vmx_* in common code
  iommu/vt-d: guard vmx_pi_hooks_* calls with cpu_has_vmx

Xenia Ragiadakou (4):
  x86: introduce AMD-V and Intel VT-x Kconfig options
  x86/oprofile: guard svm specific symbols with CONFIG_SVM
  x86/ioreq: guard VIO_realmode_completion with CONFIG_VMX
  x86/hvm: make AMD-V and Intel VT-x support configurable

 xen/arch/x86/Kconfig                    |  25 +
 xen/arch/x86/cpu/vpmu_amd.c             |   8 +-
 xen/arch/x86/cpu/vpmu_intel.c           |  20 +-
 xen/arch/x86/domain.c                   |   4 +-
 xen/arch/x86/hvm/Makefile               |   4 +-
 xen/arch/x86/hvm/emulate.c              |   2 +
 xen/arch/x86/hvm/hvm.c                  |   2 +-
 xen/arch/x86/hvm/ioreq.c                |   2 +
 xen/arch/x86/hvm/monitor.c              |   4 +-
 xen/arch/x86/hvm/viridian/viridian.c    |   4 +-
 xen/arch/x86/include/asm/altp2m.h       |   5 +-
 xen/arch/x86/include/asm/cpufeature.h   |   6 +-
 xen/arch/x86/include/asm/hvm/hvm.h      |   2 +-
 xen/arch/x86/include/asm/hvm/vmx/vmcs.h |   4 +-
 xen/arch/x86/include/asm/p2m.h          |  17 +-
 xen/arch/x86/mm/Makefile                |   5 +-
 xen/arch/x86/mm/altp2m.c                | 630 +++++++++++++++++++++++
 xen/arch/x86/mm/hap/Makefile            |   2 +-
 xen/arch/x86/mm/p2m-basic.c             |  19 +-
 xen/arch/x86/mm/p2m-ept.c               |   2 +-
 xen/arch/x86/mm/p2m.c                   | 632 +-----------------------
 xen/arch/x86/mm/p2m.h                   |   3 +
 xen/arch/x86/oprofile/op_model_athlon.c |   2 +-
 xen/arch/x86/traps.c                    |   9 +-
 xen/drivers/passthrough/vtd/iommu.c     |   6 +-
 xen/include/xen/sched.h                 |   2 +-
 26 files changed, 738 insertions(+), 683 deletions(-)