1 files changed, 19 insertions, 1 deletions

diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 02d6d29a63c1..3a617af60d46 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -14,6 +14,7 @@ config XTENSA
         select GENERIC_PCI_IOMAP
         select ARCH_WANT_IPC_PARSE_VERSION
         select ARCH_WANT_OPTIONAL_GPIOLIB
+        select BUILDTIME_EXTABLE_SORT
         select CLONE_BACKWARDS
         select IRQ_DOMAIN
         select HAVE_OPROFILE
@@ -189,6 +190,24 @@ config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX
 
           If in doubt, say Y.
 
+config HIGHMEM
+        bool "High Memory Support"
+        help
+          Linux can use the full amount of RAM in the system by
+          default. However, the default MMUv2 setup only maps the
+          lowermost 128 MB of memory linearly to the areas starting
+          at 0xd0000000 (cached) and 0xd8000000 (uncached).
+          When there are more than 128 MB memory in the system not
+          all of it can be "permanently mapped" by the kernel.
+          The physical memory that's not permanently mapped is called
+          "high memory".
+
+          If you are compiling a kernel which will never run on a
+          machine with more than 128 MB total physical RAM, answer
+          N here.
+
+          If unsure, say Y.
+
 endmenu
 
 config XTENSA_CALIBRATE_CCOUNT
@@ -224,7 +243,6 @@ choice
 
 config XTENSA_PLATFORM_ISS
         bool "ISS"
-        depends on TTY
         select XTENSA_CALIBRATE_CCOUNT
         select SERIAL_CONSOLE
         help