Merge pull request #28 from mmisono/fix/cr3_match

simple-pt: Mask out the PCID in the cr3
andikleen · May 10, 2020 · 2c7ec45 · 2c7ec45
2 parents 505fae2 + 86fb9bc
commit 2c7ec45
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/simple-pt.c b/simple-pt.c
@@ -846,7 +846,7 @@ static u64 retrieve_cr3(void)
 {
 	u64 cr3;
 	asm volatile("mov %%cr3,%0" : "=r" (cr3));
-	return cr3;
+	return cr3 & ~0xfff; // mask out the PCID
 }
 
 static void probe_sched_process_exec(void *arg,