1 files changed, 20 insertions, 1 deletions

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 673f12cf6eb0..46c98efbbf8d 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -223,6 +223,9 @@ unsigned long saved_video_mode;
 #define RAMDISK_LOAD_FLAG               0x4000
 
 static char __initdata command_line[COMMAND_LINE_SIZE];
+#ifdef CONFIG_CMDLINE_BOOL
+static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE;
+#endif
 
 #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
 struct edd edd;
@@ -665,11 +668,28 @@ void __init setup_arch(char **cmdline_p)
         bss_resource.start = virt_to_phys(&__bss_start);
         bss_resource.end = virt_to_phys(&__bss_stop)-1;
 
+#ifdef CONFIG_CMDLINE_BOOL
+#ifdef CONFIG_CMDLINE_OVERRIDE
+        strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
+#else
+        if (builtin_cmdline[0]) {
+                /* append boot loader cmdline to builtin */
+                strlcat(builtin_cmdline, " ", COMMAND_LINE_SIZE);
+                strlcat(builtin_cmdline, boot_command_line, COMMAND_LINE_SIZE);
+                strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
+        }
+#endif
+#endif
+
         strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
         *cmdline_p = command_line;
 
         parse_early_param();
 
+#ifdef CONFIG_X86_64
+        check_efer();
+#endif
+
 #if defined(CONFIG_VMI) && defined(CONFIG_X86_32)
         /*
          * Must be before kernel pagetables are setup
@@ -738,7 +758,6 @@ void __init setup_arch(char **cmdline_p)
 #else
         num_physpages = max_pfn;
 
-        check_efer();
         if (cpu_has_x2apic)
                 check_x2apic();