commit 260e98edc8ae8ea862c9c222eeffb1a2eeafa7fc
author Lennert Buytenhek <buytenh@wantstofly.org> Mon Aug 28 12:51:20 2006 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> Mon Aug 28 12:51:20 2006 +0100
tree 33f7e69ca5e27c1fd2c874ddd807e4d8c6e3dc23
parent 863dab453b869136453944bda63e20b6ed39c5ef

[ARM] 3761/1: fix armv4t breakage after adding thumb interworking to userspace helpers

Patch from Lennert Buytenhek

On armv4t systems, we have always compiled the kernel with -march=armv4
instead of -march=armv4t, which means that any use of bx will bomb out.

Commit ba9b5d76372dc290b6ca04dad93927a22c2ac49a introduced the use of
bx in the kernel, which means we need to compile with -march=armv4t on
armv4t systems now.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/Kconfig

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 5f80f18..b4f220dd 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -46,7 +46,7 @@
 config CPU_ARM720T
 	bool "Support ARM720T processor" if !ARCH_CLPS711X && !ARCH_L7200 && !ARCH_CDB89712 && ARCH_INTEGRATOR
 	default y if ARCH_CLPS711X || ARCH_L7200 || ARCH_CDB89712 || ARCH_H720X
-	select CPU_32v4
+	select CPU_32v4T
 	select CPU_ABRT_LV4T
 	select CPU_CACHE_V4
 	select CPU_CACHE_VIVT
@@ -64,7 +64,7 @@
 	bool "Support ARM920T processor"
 	depends on ARCH_EP93XX || ARCH_INTEGRATOR || CPU_S3C2410 || CPU_S3C2440 || CPU_S3C2442 || ARCH_IMX || ARCH_AAEC2000 || ARCH_AT91RM9200
 	default y if CPU_S3C2410 || CPU_S3C2440 || CPU_S3C2442 || ARCH_AT91RM9200
-	select CPU_32v4
+	select CPU_32v4T
 	select CPU_ABRT_EV4T
 	select CPU_CACHE_V4WT
 	select CPU_CACHE_VIVT
@@ -85,7 +85,7 @@
 	bool "Support ARM922T processor" if ARCH_INTEGRATOR
 	depends on ARCH_LH7A40X || ARCH_INTEGRATOR
 	default y if ARCH_LH7A40X
-	select CPU_32v4
+	select CPU_32v4T
 	select CPU_ABRT_EV4T
 	select CPU_CACHE_V4WT
 	select CPU_CACHE_VIVT
@@ -104,7 +104,7 @@
  	bool "Support ARM925T processor" if ARCH_OMAP1
  	depends on ARCH_OMAP15XX
  	default y if ARCH_OMAP15XX
-	select CPU_32v4
+	select CPU_32v4T
 	select CPU_ABRT_EV4T
 	select CPU_CACHE_V4WT
 	select CPU_CACHE_VIVT
@@ -285,6 +285,11 @@
 	select TLS_REG_EMUL if SMP || !MMU
 	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
 
+config CPU_32v4T
+	bool
+	select TLS_REG_EMUL if SMP || !MMU
+	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP
+
 config CPU_32v5
 	bool
 	select TLS_REG_EMUL if SMP || !MMU