diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index 874e6bb7940578fd86878e69ae9ddc7b91eee03f..d401d908c46361264452bd925ffd1ca3c5c1a3c5 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -735,8 +735,11 @@ __kuser_cmpxchg: @ 0xffff0fc0 * The kernel itself must perform the operation. * A special ghost syscall is used for that (see traps.c). */ + stmfd sp!, {r7, lr} + mov r7, #0xff00 @ 0xfff0 into r7 for EABI + orr r7, r7, #0xf0 swi #0x9ffff0 - mov pc, lr + ldmfd sp!, {r7, pc} #elif __LINUX_ARM_ARCH__ < 6