Merge tag 'x86-cleanups-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull miscellaneous x86 cleanups from Thomas Gleixner:

 - Correct the common copy and pasted mishandling of kstrtobool() in the
   strict_sas_size() setup function

 - Make recalibrate_cpu_khz() an GPL only export

 - Check TSC feature before doing anything else which avoids pointless
   code execution if TSC is not available

 - Remove or fixup stale and misleading comments

 - Remove unused or pointelessly duplicated variables

 - Spelling and typo fixes

* tag 'x86-cleanups-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/hotplug: Remove incorrect comment about mwait_play_dead()
  x86/tsc: Do feature check as the very first thing
  x86/tsc: Make recalibrate_cpu_khz() export GPL only
  x86/cacheinfo: Remove unused trace variable
  x86/Kconfig: Fix spellos & punctuation
  x86/signal: Fix the value returned by strict_sas_size()
  x86/cpu: Remove misleading comment
  x86/setup: Move duplicate boot_cpu_data definition out of the ifdeffery
  x86/boot/e820: Fix typo in e820.c comment

1 files changed, 6 insertions, 7 deletions

diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 8c33936b017d..4c6d69c6a94a 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -911,8 +911,7 @@ void recalibrate_cpu_khz(void)
 						    cpu_khz_old, cpu_khz);
 #endif
 }
-
-EXPORT_SYMBOL(recalibrate_cpu_khz);
+EXPORT_SYMBOL_GPL(recalibrate_cpu_khz);
 
 
 static unsigned long long cyc2ns_suspend;
@@ -1509,6 +1508,11 @@ void __init tsc_early_init(void)
 
 void __init tsc_init(void)
 {
+	if (!cpu_feature_enabled(X86_FEATURE_TSC)) {
+		setup_clear_cpu_cap(X86_FEATURE_TSC_DEADLINE_TIMER);
+		return;
+	}
+
 	/*
 	 * native_calibrate_cpu_early can only calibrate using methods that are
 	 * available early in boot.
@@ -1516,11 +1520,6 @@ void __init tsc_init(void)
 	if (x86_platform.calibrate_cpu == native_calibrate_cpu_early)
 		x86_platform.calibrate_cpu = native_calibrate_cpu;
 
-	if (!boot_cpu_has(X86_FEATURE_TSC)) {
-		setup_clear_cpu_cap(X86_FEATURE_TSC_DEADLINE_TIMER);
-		return;
-	}
-
 	if (!tsc_khz) {
 		/* We failed to determine frequencies earlier, try again */
 		if (!determine_cpu_tsc_frequencies(false)) {