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    Subject[PATCH v2 0/4] Emulate VMXON region correctly
    Date
    Reference: https://bugzilla.kernel.org/show_bug.cgi?id=54521

    The vmxon region is unused by nvmx, but adding these checks
    are probably harmless and may detect buggy L1 hypervisors in
    the future!

    v2:
    1/4
    - Commit message change to reflect addition of new function
    2/4
    - Use cpuid_maxphyaddr()
    - Fix a leak with kunmap()
    - Remove unnecessary braces around comparisions
    - Move all checks into a common function, this will be later
    used by handle_vmptrld and handle_vmclear in 4/4
    4/4
    - New patch - use common function to perform checks on
    vmptr

    Bandan Das (4):
    KVM: nVMX: rearrange get_vmx_mem_address
    KVM: nVMX: additional checks on vmxon region
    KVM: nVMX: fail on invalid vmclear/vmptrld pointer
    KVM: nVMX: move vmclear and vmptrld pre-checks to
    nested_vmx_check_vmptr

    arch/x86/kvm/cpuid.c | 1 +
    arch/x86/kvm/vmx.c | 240 +++++++++++++++++++++++++++++++++------------------
    2 files changed, 156 insertions(+), 85 deletions(-)

    --
    1.8.3.1



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