Do some cleanups about MSR_IA32_ARCH_CAPABILITIES in KVM e.g, fix stale comments, elimite open-coded MSR reads, track features that can be exposed to guests to avoid computing them runtime. They are found when reading the code. No functional change intented. Changes from v1 -> v2: 1. toggle ARCH_CAP_SKIP_VMENTRY_L1DFLUSH bit when l1tf mitigation state is changed by module param. [Xiaoyao, Sean] 2. add more cleanups (patch 2/3) Chao Gao (3): KVM: x86: Track supported ARCH_CAPABILITIES in kvm_caps KVM: x86: Correct the name for skipping VMENTER l1d flush x86/cpu, KVM: Use helper function to read MSR_IA32_ARCH_CAPABILITIES arch/x86/kernel/cpu/common.c | 1 + arch/x86/kvm/vmx/vmx.c | 44 +++++++++++++++++++++++------------- arch/x86/kvm/x86.c | 16 +++++-------- arch/x86/kvm/x86.h | 1 + 4 files changed, 36 insertions(+), 26 deletions(-) base-commit: b9846a698c9aff4eb2214a06ac83638ad098f33f -- 2.40.0
