x86: Fix various typos in comments

Go over arch/x86/ and fix common typos in comments,
and a typo in an actual function argument name.

No change in functionality intended.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/events/intel/bts.c

@@ -589,7 +589,7 @@ static __init int bts_init(void)
 		 * the AUX buffer.
 		 *
 		 * However, since this driver supports per-CPU and per-task inherit
-		 * we cannot use the user mapping since it will not be availble
+		 * we cannot use the user mapping since it will not be available
 		 * if we're not running the owning process.
 		 *
 		 * With PTI we can't use the kernal map either, because its not

arch/x86/events/intel/core.c

@@ -1930,7 +1930,7 @@ static void intel_pmu_enable_all(int added)
  *   in sequence on the same PMC or on different PMCs.
  *
  * In practise it appears some of these events do in fact count, and
- * we need to programm all 4 events.
+ * we need to program all 4 events.
  */
 static void intel_pmu_nhm_workaround(void)
 {

arch/x86/events/intel/ds.c

@@ -1199,7 +1199,7 @@ static void setup_pebs_sample_data(struct perf_event *event,
 	/*
 	 * We must however always use iregs for the unwinder to stay sane; the
 	 * record BP,SP,IP can point into thin air when the record is from a
-	 * previous PMI context or an (I)RET happend between the record and
+	 * previous PMI context or an (I)RET happened between the record and
 	 * PMI.
 	 */
 	if (sample_type & PERF_SAMPLE_CALLCHAIN)

arch/x86/events/intel/p4.c

@@ -1259,7 +1259,7 @@ again:
 		}
 		/*
 		 * Perf does test runs to see if a whole group can be assigned
-		 * together succesfully.  There can be multiple rounds of this.
+		 * together successfully.  There can be multiple rounds of this.
 		 * Unfortunately, p4_pmu_swap_config_ts touches the hwc->config
 		 * bits, such that the next round of group assignments will
 		 * cause the above p4_should_swap_ts to pass instead of fail.