[PATCH v3 0/3] Add KVM support for Intel local MCE

[Haozhong Zhang]

Changes in v3:
 * Make guest MSR_IA32_FEATURE_CONTROL always available (Paolo
   Bonzini) and remove the nested vmx check in the 'get' case in patch
   1 (Borislav Petkov).
 * Always mark the locked bit of MSR_IA32_FEATURE_CONTROL
   valid. (Paolo Bonzini)
 * Remove the now unnecessary macros to set
   msr_ia32_feature_control_valid_bits. (Paolo Bonzini)
 * Remove the unnecessary check of MCG_LMCE_P in v2
   vmx_mcg_ext_ctl_msr_present() and inline the remaining part. (Paolo
   Bonzini)

Changes in v2:
 * v1 Patch 1 becomes v2 Patch 3.
 * Fix COB chain in Patch 3. (Boris Petkov)
 * (Patch 1) Move msr_ia32_feature_control from nested_vmx to
   vcpu_vmx, because it does not depend only on nested after this
   patch series. (Radim KrÄmÃÅ)
 * (Patch 2) Add a valid bitmask for MSR_IA32_FEATURE_CONTROL to allow
   checking individual bits of MSR_IA32_FEATURE_CONTROL according to
   enabled features. (Radim KrÄmÃÅ)
 * Move the common check in handling MSR_IA32_MCG_EXT_CTL to function
   vmx_mcg_ext_ctl_msr_present. (Radim KrÄmÃÅ)

Changes in v1:
 * Change macro KVM_MCE_CAP_SUPPORTED to variable kvm_mce_cap_supported.
 * Include LMCE capability in kvm_mce_cap_supported only on Intel CPU,
   i.e. LMCE can be enabled only on Intel CPU.
 * Check if LMCE is enabled in guest MSR_IA32_FEATURE_CONTROL when
   handling guest access to MSR_IA32_MCG_EXT_CTL.

This patch series along with the corresponding QEMU patch series (sent
via another email with title "[PATCH v5 0/4] Add QEMU support for
Intel local MCE") enables Intel local MCE feature for guest. This KVM
patch handles guest access to LMCE-related MSR (MSR_IA32_MCG_EXT_CTL
and MSR_IA32_FEATURE_CONTROL).

Ashok Raj (1):
  KVM: VMX: enable guest access to LMCE related MSRs

Haozhong Zhang (2):
  KVM: VMX: move msr_ia32_feature_control to vcpu_vmx
  KVM: VMX: validate individual bits of guest MSR_IA32_FEATURE_CONTROL

 arch/x86/include/asm/kvm_host.h |  5 +++
 arch/x86/kvm/vmx.c              | 67 ++++++++++++++++++++++++++++++++++++-----
 arch/x86/kvm/x86.c              | 15 +++++----
 3 files changed, 73 insertions(+), 14 deletions(-)

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2.9.0