X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fx86_64%2Fkernel%2Fhead64.c;h=cea20a66c150b38250477d870e170a059d1942a6;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=0f8c78dcd38c4aca360158eb7d72bc85901add83;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/arch/x86_64/kernel/head64.c b/arch/x86_64/kernel/head64.c
index 0f8c78dcd..cea20a66c 100644
--- a/arch/x86_64/kernel/head64.c
+++ b/arch/x86_64/kernel/head64.c
@@ -19,14 +19,15 @@
 #include <asm/bootsetup.h>
 #include <asm/setup.h>
 #include <asm/desc.h>
+#include <asm/pgtable.h>
+#include <asm/sections.h>
 
 /* Don't add a printk in there. printk relies on the PDA which is not initialized 
    yet. */
 static void __init clear_bss(void)
 {
-	extern char __bss_start[], __bss_end[];
 	memset(__bss_start, 0,
-	       (unsigned long) __bss_end - (unsigned long) __bss_start);
+	       (unsigned long) __bss_stop - (unsigned long) __bss_start);
 }
 
 #define NEW_CL_POINTER		0x228	/* Relative to real mode data */
@@ -75,8 +76,6 @@ static void __init setup_boot_cpu_data(void)
 	boot_cpu_data.x86_mask = eax & 0xf;
 }
 
-extern char _end[];
-
 void __init x86_64_start_kernel(char * real_mode_data)
 {
 	char *s;
@@ -86,6 +85,16 @@ void __init x86_64_start_kernel(char * real_mode_data)
 		set_intr_gate(i, early_idt_handler);
 	asm volatile("lidt %0" :: "m" (idt_descr));
 	clear_bss();
+
+	/*
+	 * switch to init_level4_pgt from boot_level4_pgt
+	 */
+	memcpy(init_level4_pgt, boot_level4_pgt, PTRS_PER_PGD*sizeof(pgd_t));
+	asm volatile("movq %0,%%cr3" :: "r" (__pa_symbol(&init_level4_pgt)));
+
+ 	for (i = 0; i < NR_CPUS; i++)
+ 		cpu_pda(i) = &boot_cpu_pda[i];
+
 	pda_init(0);
 	copy_bootdata(real_mode_data);
 #ifdef CONFIG_SMP
@@ -93,8 +102,8 @@ void __init x86_64_start_kernel(char * real_mode_data)
 #endif
 	s = strstr(saved_command_line, "earlyprintk=");
 	if (s != NULL)
-		setup_early_printk(s);
-#ifdef CONFIG_DISCONTIGMEM
+		setup_early_printk(strchr(s, '=') + 1);
+#ifdef CONFIG_NUMA
 	s = strstr(saved_command_line, "numa=");
 	if (s != NULL)
 		numa_setup(s+5);