This is another series to provide a means to render the CPU virtualisation
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.
Major changes in this series, comparing to v3, are turning of macros using_vmx &
using_svm into static inline functions, and also defining & using
arch_vcpu_ioreq_completion() only in VMX-enabled build.
More specific changes are provided in per-patch changelog.
v3 series here:
https://lore.kernel.org/xen-devel/cover.1717410850.git.Sergiy_Kibrik@epam.com/
The question about config option naming still remains. I haven't changed names
in this series yet, but a verdict from maintainers is very welcomed.
My thought is probably to leave names as they're now, CONFIG_{SVM,VMX} that is.
Because now only CONFIG_INTEL_VMX/CONFIG_AMD_SVM occupy much more space,
but also add some unneeded redundancy to names -- I mean Intel is the only
vendor to provide VT-d as for now, and that does not seem to change anytime
soon, does it? (and the same for AMD/AMD-V)
-Sergiy
Sergiy Kibrik (7):
x86/altp2m: add static inline stub for altp2m_vcpu_idx()
x86/p2m: guard altp2m routines
x86: introduce CONFIG_ALTP2M Kconfig option
x86: introduce using_{svm,vmx}() helpers
x86/vmx: guard access to cpu_has_vmx_* in common code
x86/vpmu: guard calls to vmx/svm functions
x86/vmx: replace CONFIG_HVM with CONFIG_VMX in vmx.h
Xenia Ragiadakou (7):
x86: introduce AMD-V and Intel VT-x Kconfig options
x86/p2m: guard EPT functions with using_vmx() check
x86/traps: guard vmx specific functions with usinc_vmx() check
x86/PV: guard svm specific functions with usinc_svm() check
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/arm/ioreq.c | 6 -----
xen/arch/x86/Kconfig | 31 +++++++++++++++++++++++++
xen/arch/x86/cpu/vpmu_amd.c | 9 +++----
xen/arch/x86/cpu/vpmu_intel.c | 16 +++++++------
xen/arch/x86/domain.c | 8 +++----
xen/arch/x86/hvm/Makefile | 4 ++--
xen/arch/x86/hvm/hvm.c | 6 ++---
xen/arch/x86/hvm/ioreq.c | 2 ++
xen/arch/x86/hvm/nestedhvm.c | 4 ++--
xen/arch/x86/hvm/viridian/viridian.c | 4 ++--
xen/arch/x86/include/asm/altp2m.h | 11 +++++++--
xen/arch/x86/include/asm/hvm/hvm.h | 17 +++++++++++++-
xen/arch/x86/include/asm/hvm/ioreq.h | 5 ++++
xen/arch/x86/include/asm/hvm/vmx/vmcs.h | 17 +++++++++-----
xen/arch/x86/include/asm/hvm/vmx/vmx.h | 2 +-
xen/arch/x86/include/asm/p2m.h | 23 ++++++++++++++----
xen/arch/x86/mm/Makefile | 5 ++--
xen/arch/x86/mm/hap/Makefile | 2 +-
xen/arch/x86/mm/p2m-basic.c | 13 ++++++-----
xen/arch/x86/mm/p2m-ept.c | 2 +-
xen/arch/x86/oprofile/op_model_athlon.c | 2 +-
xen/arch/x86/traps.c | 13 ++++-------
xen/common/ioreq.c | 5 +++-
xen/include/xen/ioreq.h | 1 -
24 files changed, 141 insertions(+), 67 deletions(-)
--
2.25.1