From 073edd532910230b992fdd30edd726403aab3854 Mon Sep 17 00:00:00 2001 From: Brian Inglis Date: Fri, 10 Apr 2020 22:35:28 -0600 Subject: [PATCH] proc_cpuinfo: Add PPIN support for AMD 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 03ec621f4..f1bc1c740 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 */