From 03eca200064381d05a54126a711203d443508d80 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 3 Jun 2014 17:24:51 +0200 Subject: [PATCH] ARM: nommu: don't limit TASK_SIZE MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit With TASK_SIZE set to the maximal RAM address booting in some XIP configurations fails (e.g. on efm32 DK3750). The problem is that strncpy_from_user et al. check for the address not being above TASK_SIZE (since 8c56cc8be5b3 (ARM: 7449/1: use generic strnlen_user and strncpy_from_user functions)) and this makes booting fail if the XIP flash is above the RAM address space. This change is in line with blackfin, frv and m68k which also use 0xffffffff for TASK_SIZE with !MMU. Signed-off-by: Uwe Kleine-König --- arch/arm/include/asm/memory.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index 2b751464d6ff..c6bbb7daea59 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -91,9 +91,7 @@ * of this define that was meant to. * Fortunately, there is no reference for this in noMMU mode, for now. */ -#ifndef TASK_SIZE -#define TASK_SIZE (CONFIG_DRAM_SIZE) -#endif +#define TASK_SIZE UL(0xffffffff) #ifndef TASK_UNMAPPED_BASE #define TASK_UNMAPPED_BASE UL(0x00000000) -- 2.39.5