x86/bugs/multihit: Fix mitigation reporting when VMX is not in use
On systems that have virtualization disabled or unsupported, sysfs mitigation for X86_BUG_ITLB_MULTIHIT is reported incorrectly as: $ cat /sys/devices/system/cpu/vulnerabilities/itlb_multihit KVM: Vulnerable System is not vulnerable to DoS attack from a rogue guest when virtualization is disabled or unsupported in the hardware. Change the mitigation reporting for these cases. Fixes: b8e8c830 ("kvm: mmu: ITLB_MULTIHIT mitigation") Reported-by:Nelson Dsouza <nelson.dsouza@linux.intel.com> Co-developed-by:
Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by:
Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by:
Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Reviewed-by:
Tony Luck <tony.luck@intel.com> Acked-by:
Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/0ba029932a816179b9d14a30db38f0f11ef1f166.1594925782.git.pawan.kumar.gupta@linux.intel.com
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