patch-2_6_7-vs1_9_1_12

[linux-2.6.git] / arch / x86_64 / kernel / head64.c

diff --git a/arch/x86_64/kernel/head64.c b/arch/x86_64/kernel/head64.c
index b04a1ad..4055c78 100644 (file)
--- a/arch/x86_64/kernel/head64.c
+++ b/arch/x86_64/kernel/head64.c
@@ -73,6 +73,8 @@ 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;
@@ -80,6 +82,9 @@ void __init x86_64_start_kernel(char * real_mode_data)
        clear_bss();
        pda_init(0);
        copy_bootdata(real_mode_data);
+#ifdef CONFIG_SMP
+       cpu_set(0, cpu_online_map);
+#endif
        /* default console: */
        if (!strstr(saved_command_line, "console="))
                strcat(saved_command_line, " console=tty0"); 
@@ -95,6 +100,10 @@ void __init x86_64_start_kernel(char * real_mode_data)
        if (strstr(saved_command_line, "disableapic"))
                disable_apic = 1;
 #endif
+       /* You need early console to see that */
+       if (__pa_symbol(&_end) >= KERNEL_TEXT_SIZE)
+               panic("Kernel too big for kernel mapping\n");
+
        setup_boot_cpu_data();
        start_kernel();
 }