diff --git a/winsup/cygwin/fhandler_proc.cc b/winsup/cygwin/fhandler_proc.cc
index 6ec6f8bc4..d51f171a3 100644
--- a/winsup/cygwin/fhandler_proc.cc
+++ b/winsup/cygwin/fhandler_proc.cc
@@ -1456,6 +1456,9 @@ format_proc_cpuinfo (void *, char *&destbuf)
 
 	  ftcprint (features1,  4, "avx_vnni");	    /* vex enc NN vec */
 	  ftcprint (features1,  5, "avx512_bf16");  /* vec bfloat16 short */
+	  ftcprint (features1, 22, "amx_bf16");	    /* Advanced Matrix eXtensions Brain Float 16 dot product */
+	  ftcprint (features1, 24, "amx_tile");	    /* Advanced Matrix eXtensions Tile matrix multiply */
+	  ftcprint (features1, 25, "amx_int8");	    /* Advanced Matrix eXtensions Int 8 byte dot product */
 	}
 
       /* AMD cpuid 0x80000008 ebx */
@@ -1479,6 +1482,7 @@ format_proc_cpuinfo (void *, char *&destbuf)
 /*	  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 */
+	  ftcprint (features1, 27, "cppc");	    /* collab proc perf ctl */
         }
 
       /* thermal & power cpuid 0x00000006 eax */