---

yaml --- r: 55879 b: refs/heads/master c: 069f11f h: refs/heads/master i: 55877: 0518a24 55875: a40be6f 55871: d182041 v: v3
git-mirror · May 11, 2007 · eb55144 · eb55144
1 parent 08f76d8
commit eb55144
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Showing 3 changed files with 10 additions and 8 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6041b57c6c99dcb59524f1bb0db0628c2689a464
+refs/heads/master: 069f11f9d66bc582fb40a37a7b92363f5d321969
diff --git a/trunk/arch/x86_64/kernel/head64.c b/trunk/arch/x86_64/kernel/head64.c
@@ -62,13 +62,6 @@ void __init x86_64_start_kernel(char * real_mode_data)
 {
 	int i;
 
-	/*
-	 * Make sure kernel is aligned to 2MB address. Catching it at compile
-	 * time is better. Change your config file and compile the kernel
-	 * for a 2MB aligned address (CONFIG_PHYSICAL_START)
-	 */
-	BUILD_BUG_ON(CONFIG_PHYSICAL_START & (__KERNEL_ALIGN - 1));
-
 	/* clear bss before set_intr_gate with early_idt_handler */
 	clear_bss();
 

diff --git a/trunk/include/asm-x86_64/page.h b/trunk/include/asm-x86_64/page.h
@@ -80,6 +80,15 @@ extern unsigned long phys_base;
 #define __PHYSICAL_START	CONFIG_PHYSICAL_START
 #define __KERNEL_ALIGN		0x200000
 
+/*
+ * Make sure kernel is aligned to 2MB address. Catching it at compile
+ * time is better. Change your config file and compile the kernel
+ * for a 2MB aligned address (CONFIG_PHYSICAL_START)
+ */
+#if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0
+#error "CONFIG_PHYSICAL_START must be a multiple of 2MB"
+#endif
+
 #define __START_KERNEL		(__START_KERNEL_map + __PHYSICAL_START)
 #define __START_KERNEL_map	_AC(0xffffffff80000000, UL)
 #define __PAGE_OFFSET           _AC(0xffff810000000000, UL)