x86/cpu: Clear TME feature flag if TME is not enabled by BIOS

JIRA: https://issues.redhat.com/browse/RHEL-111095

commit cd2236c
Author: Bingsong Si <sibs@chinatelecom.cn>
Date:   Mon Mar 11 15:19:37 2024 +0800

    x86/cpu: Clear TME feature flag if TME is not enabled by BIOS

    When TME is disabled by BIOS, the dmesg output is:

      x86/tme: not enabled by BIOS

    ... and TME functionality is not enabled by the kernel, but the TME feature
    is still shown in /proc/cpuinfo.

    Clear it.

    [ mingo: Clarified changelog ]

    Signed-off-by: Bingsong Si <sibs@chinatelecom.cn>
    Signed-off-by: Ingo Molnar <mingo@kernel.org>
    Cc: "Huang, Kai" <kai.huang@intel.com>
    Link: https://lore.kernel.org/r/20240311071938.13247-1-sibs@chinatelecom.cn

Signed-off-by: Frank Liang <xiliang@redhat.com>

Author: liangxiao1

arch/x86/kernel/cpu/intel.c

@@ -225,6 +225,7 @@ static void detect_tme_early(struct cpuinfo_x86 *c)
 	if (!TME_ACTIVATE_LOCKED(tme_activate) || !TME_ACTIVATE_ENABLED(tme_activate)) {
 		pr_info_once("x86/tme: not enabled by BIOS\n");
 		mktme_status = MKTME_DISABLED;
+		clear_cpu_cap(c, X86_FEATURE_TME);
 		return;
 	}