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simple-pt: Mask out the PCID in the cr3 #28

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May 10, 2020
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simple-pt: Mask out the PCID in the cr3 #28

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2 changes: 1 addition & 1 deletion simple-pt.c
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Original file line number Diff line number Diff line change
Expand Up @@ -801,7 +801,7 @@ 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,
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