arm64: a backwards compatible config option

Create a config option that when selected configures the kernel to be
as backwards compatable with kernels that ran on an ARMv7 processor
as possible.

Change-Id: I7cd67e6d4174335f9a67aba2a39dfd993f240c27
Signed-off-by: Alex Van Brunt <avanbrunt@nvidia.com>
Reviewed-on: http://git-master/r/366094
Reviewed-by: Richard Wiley <rwiley@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Tested-by: Oskari Jaaskelainen <oskarij@nvidia.com>

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 3ee27d34a0208cbdfbe0281d328e2e19ad691ed0..437dd6cf5ac8a3446875f1c5fc58fd5f3b9c6437 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -182,6 +182,16 @@ config HW_PERF_EVENTS
          Enable hardware performance counter support for perf events. If
          disabled, perf events will use software events only.
 
+config ARMV7_COMPAT
+       bool "Kernel support for ARMv7 applications"
+       depends on COMPAT
+       help
+        This option enables features that allow that ran on an ARMv7 or older
+        processor to continue functioning.
+
+        If you want to execute ARMv7 applications, say Y
+
+
 source "mm/Kconfig"
 
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