diff --git a/winsup/cygwin/fhandler_proc.cc b/winsup/cygwin/fhandler_proc.cc
index a6a0b683c..c461bbc75 100644
--- a/winsup/cygwin/fhandler_proc.cc
+++ b/winsup/cygwin/fhandler_proc.cc
@@ -706,7 +706,8 @@ format_proc_cpuinfo (void *, char *&destbuf)
 
       /* Vendor identification. */
       bool is_amd = false, is_intel = false;
-      if (!strcmp ((char*)vendor_id, "AuthenticAMD"))
+      if (!strcmp ((char*)vendor_id, "AuthenticAMD")
+          || !strcmp((char*)vendor_id, "HygonGenuine"))
 	is_amd = true;
       else if (!strcmp ((char*)vendor_id, "GenuineIntel"))
 	is_intel = true;
diff --git a/winsup/cygwin/sysconf.cc b/winsup/cygwin/sysconf.cc
index 216e5142f..3440c09ee 100644
--- a/winsup/cygwin/sysconf.cc
+++ b/winsup/cygwin/sysconf.cc
@@ -486,7 +486,8 @@ get_cpu_cache (int in)
   vendor_id[3] = 0;
   if (!strcmp ((char*) vendor_id, "GenuineIntel"))
     return get_cpu_cache_intel (in, maxf & 0xffff);
-  else if (!strcmp ((char*)vendor_id, "AuthenticAMD"))
+  else if (!strcmp ((char*)vendor_id, "AuthenticAMD")
+           || !strcmp((char*)vendor_id, "HygonGenuine"))
     {
       uint32_t maxe = 0, unused;
       cpuid (&maxe, &unused, &unused, &unused, 0x80000000);