Newer AMD CPUs support a feature called protected processor
identification number (PPIN). This feature can be detected via
CPUID_Fn80000008_EBX[23].
---
winsup/cygwin/fhandler_proc.cc | 1 +
1 file changed, 1 insertion(+)
diff --git a/winsup/cygwin/fhandler_proc.cc b/winsup/cygwin/fhandler_proc.cc
index 605a8443f0..5c5f4bd9ef 100644
--- a/winsup/cygwin/fhandler_proc.cc
+++ b/winsup/cygwin/fhandler_proc.cc
@@ -1262,6 +1262,7 @@ format_proc_cpuinfo (void *, char *&destbuf)
/* ftcprint (features1, 14, "ibrs" ); */ /* ind br restricted spec */
/* ftcprint (features1, 15, "stibp"); */ /* 1 thread ind br pred */
/* ftcprint (features1, 17, "stibp_always_on"); */ /* stibp always on */
+ ftcprint (features1, 23, "amd_ppin"); /* protected proc id no */
/* ftcprint (features1, 24, "ssbd"); */ /* spec store byp dis */
ftcprint (features1, 25, "virt_ssbd"); /* vir spec store byp dis */
/* ftcprint (features1, 26, "ssb_no"); */ /* ssb fixed in hardware */
--
2.21.0
