CVE-2019-11135

When TSX_CTRL bit of IA32_ARCH_CAPABILITIES MSR is set to 1, the CPU
supports IA32_TSX_CTRL MSR which can be used to disable and/or mask TSX.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>