diff --git a/elf/ldconfig.c b/elf/ldconfig.c
index f31e108..7c8fd29 100644
--- a/elf/ldconfig.c
+++ b/elf/ldconfig.c
@@ -44,11 +44,15 @@
 
 #include <dl-procinfo.h>
 
-#ifdef _DL_FIRST_PLATFORM
-# define _DL_FIRST_EXTRA (_DL_FIRST_PLATFORM + _DL_PLATFORMS_COUNT)
-#else
-# define _DL_FIRST_EXTRA _DL_HWCAP_COUNT
-#endif
+/* This subpath in search path entries is always supported and
+   included in the cache for backwards compatibility.  */
+#define TLS_SUBPATH "tls"
+
+/* The MSB of the hwcap field is set for objects in TLS_SUBPATH
+   directories.  There is always TLS support in glibc, so the dynamic
+   loader does not check the bit directly.  But more hwcap bits make a
+   an object more preferred, so the bit still has meaning.  */
+#define TLS_HWCAP_BIT 63
 
 #ifndef LD_SO_CONF
 # define LD_SO_CONF SYSCONFDIR "/ld.so.conf"
@@ -127,9 +131,6 @@ static const char *config_file;
 /* Mask to use for important hardware capabilities.  */
 static unsigned long int hwcap_mask = HWCAP_IMPORTANT;
 
-/* Configuration-defined capabilities defined in kernel vDSOs.  */
-static const char *hwcap_extra[64 - _DL_FIRST_EXTRA];
-
 /* Name and version of program.  */
 static void print_version (FILE *stream, struct argp_state *state);
 void (*argp_program_version_hook) (FILE *, struct argp_state *)
@@ -186,12 +187,9 @@ is_hwcap_platform (const char *name)
   if (hwcap_idx != -1)
     return 1;
 
-  /* Is this one of the extra pseudo-hwcaps that we map beyond
-     _DL_FIRST_EXTRA like "tls", or "nosegneg?"  */
-  for (hwcap_idx = _DL_FIRST_EXTRA; hwcap_idx < 64; ++hwcap_idx)
-    if (hwcap_extra[hwcap_idx - _DL_FIRST_EXTRA] != NULL
-	&& !strcmp (name, hwcap_extra[hwcap_idx - _DL_FIRST_EXTRA]))
-      return 1;
+  /* Backwards-compatibility for the "tls" subdirectory.  */
+  if (strcmp (name, TLS_SUBPATH) == 0)
+    return 1;
 
   return 0;
 }
@@ -226,11 +224,9 @@ path_hwcap (const char *path)
 	  h = _dl_string_platform (ptr + 1);
 	  if (h == (uint64_t) -1)
 	    {
-	      for (h = _DL_FIRST_EXTRA; h < 64; ++h)
-		if (hwcap_extra[h - _DL_FIRST_EXTRA] != NULL
-		    && !strcmp (ptr + 1, hwcap_extra[h - _DL_FIRST_EXTRA]))
-		  break;
-	      if (h == 64)
+	      if (strcmp (ptr + 1, TLS_SUBPATH) == 0)
+		h = TLS_HWCAP_BIT;
+	      else
 		break;
 	    }
 	}
@@ -1145,52 +1141,7 @@ Warning: ignoring configuration file that cannot be opened: %s"),
 	      parse_conf_include (filename, lineno, do_chroot, dir);
 	}
       else if (!strncasecmp (cp, "hwcap", 5) && isblank (cp[5]))
-	{
-	  cp += 6;
-	  char *p, *name = NULL;
-	  unsigned long int n = strtoul (cp, &cp, 0);
-	  if (cp != NULL && isblank (*cp))
-	    while ((p = strsep (&cp, " \t")) != NULL)
-	      if (p[0] != '\0')
-		{
-		  if (name == NULL)
-		    name = p;
-		  else
-		    {
-		      name = NULL;
-		      break;
-		    }
-		}
-	  if (name == NULL)
-	    {
-	      error (EXIT_FAILURE, 0, _("%s:%u: bad syntax in hwcap line"),
-		     filename, lineno);
-	      break;
-	    }
-	  if (n >= (64 - _DL_FIRST_EXTRA))
-	    error (EXIT_FAILURE, 0,
-		   _("%s:%u: hwcap index %lu above maximum %u"),
-		   filename, lineno, n, 64 - _DL_FIRST_EXTRA - 1);
-	  if (hwcap_extra[n] == NULL)
-	    {
-	      for (unsigned long int h = 0; h < (64 - _DL_FIRST_EXTRA); ++h)
-		if (hwcap_extra[h] != NULL && !strcmp (name, hwcap_extra[h]))
-		  error (EXIT_FAILURE, 0,
-			 _("%s:%u: hwcap index %lu already defined as %s"),
-			 filename, lineno, h, name);
-	      hwcap_extra[n] = xstrdup (name);
-	    }
-	  else
-	    {
-	      if (strcmp (name, hwcap_extra[n]))
-		error (EXIT_FAILURE, 0,
-		       _("%s:%u: hwcap index %lu already defined as %s"),
-		       filename, lineno, n, hwcap_extra[n]);
-	      if (opt_verbose)
-		error (0, 0, _("%s:%u: duplicate hwcap %lu %s"),
-		       filename, lineno, n, name);
-	    }
-	}
+	error (0, 0, _("%s:%u: hwcap directive ignored"), filename, lineno);
       else
 	add_dir_1 (cp, filename, lineno);
     }
@@ -1303,12 +1254,6 @@ main (int argc, char **argv)
 	  add_dir_1 (argv[i], "<cmdline>", 0);
     }
 
-  /* The last entry in hwcap_extra is reserved for the "tls" pseudo-hwcap which
-     indicates support for TLS.  This pseudo-hwcap is only used by old versions
-     under which TLS support was optional.  The entry is no longer needed, but
-     must remain for compatibility.  */
-  hwcap_extra[63 - _DL_FIRST_EXTRA] = "tls";
-
   set_hwcap ();
 
   if (opt_chroot)