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42764413d1
Introduce yet another X86_FEATURE flag framework to manage and cache KVM governed features (for lack of a better name). "Governed" in this case means that KVM has some level of involvement and/or vested interest in whether or not an X86_FEATURE can be used by the guest. The intent of the framework is twofold: to simplify caching of guest CPUID flags that KVM needs to frequently query, and to add clarity to such caching, e.g. it isn't immediately obvious that SVM's bundle of flags for "optional nested SVM features" track whether or not a flag is exposed to L1. Begrudgingly define KVM_MAX_NR_GOVERNED_FEATURES for the size of the bitmap to avoid exposing governed_features.h in arch/x86/include/asm/, but add a FIXME to call out that it can and should be cleaned up once "struct kvm_vcpu_arch" is no longer expose to the kernel at large. Cc: Zeng Guang <guang.zeng@intel.com> Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com> Reviewed-by: Kai Huang <kai.huang@intel.com> Reviewed-by: Yuan Yao <yuan.yao@intel.com> Link: https://lore.kernel.org/r/20230815203653.519297-2-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com> |
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| crypto | ||
| entry | ||
| events | ||
| hyperv | ||
| ia32 | ||
| include | ||
| kernel | ||
| kvm | ||
| lib | ||
| math-emu | ||
| mm | ||
| net | ||
| pci | ||
| platform | ||
| power | ||
| purgatory | ||
| ras | ||
| realmode | ||
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| virt/vmx/tdx | ||
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| .gitignore | ||
| Kbuild | ||
| Kconfig | ||
| Kconfig.assembler | ||
| Kconfig.cpu | ||
| Kconfig.debug | ||
| Makefile | ||
| Makefile_32.cpu | ||
| Makefile.postlink | ||
| Makefile.um | ||