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authorSean Christopherson <[email protected]>2019-12-20 20:45:02 -0800
committerBorislav Petkov <[email protected]>2020-01-13 17:53:57 +0100
commitef4d3bf19855641fc8a1f621eaf06e2a2bb872bb (patch)
tree59a71b6e73ea5ee9a9b07728687a5fb1af3a39a6 /scripts/bpf_helpers_doc.py
parent7d37953ba81121c8725f99356f7ee9762d4c3ed9 (diff)
x86/cpu: Clear VMX feature flag if VMX is not fully enabled
Now that IA32_FEAT_CTL is always configured and locked for CPUs that are known to support VMX[*], clear the VMX capability flag if the MSR is unsupported or BIOS disabled VMX, i.e. locked IA32_FEAT_CTL and didn't set the appropriate VMX enable bit. [*] Because init_ia32_feat_ctl() is called from vendors ->c_init(), it's still possible for IA32_FEAT_CTL to be left unlocked when VMX is supported by the CPU. This is not fatal, and will be addressed in a future patch. Signed-off-by: Sean Christopherson <[email protected]> Signed-off-by: Borislav Petkov <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
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