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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