kvm: x86: refine kvm_get_arch_capabilities()
1. Using X86_FEATURE_ARCH_CAPABILITIES to enumerate the existence of MSR_IA32_ARCH_CAPABILITIES to avoid using rdmsrl_safe(). 2. Since kvm_get_arch_capabilities() is only used in this file, making it static. Signed-off-by: Xiaoyao Li <xiaoyao.li@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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