Messages in this thread Patch in this message | | | From | Martin Fernandez <> | Subject | [PATCH] x86/cpuinfo: Clear X86_FEATURE_TME if TME/MKTME is disabled by BIOS | Date | Tue, 14 Jun 2022 18:02:17 -0300 |
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Right now the only way to check this is by greping the kernel logs, which is inconvinient. This is currently checked for fwupd for example.
I understand that cpuinfo is supposed to report every feature in the cpu but since AMD is doing the same for sme/sev I think is good to have this for Intel too.
Signed-off-by: Martin Fernandez <martin.fernandez@eclypsium.com> --- arch/x86/kernel/cpu/intel.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index fd5dead8371c..7311172aceaf 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -570,6 +570,8 @@ static void detect_tme(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"); + if (mktme_status == MKTME_UNINITIALIZED) + clear_cpu_cap(c, X86_FEATURE_TME); mktme_status = MKTME_DISABLED; return; } -- 2.30.2
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