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Commit 9ca33eb6 authored by Andi Kleen's avatar Andi Kleen Committed by Andi Kleen
Browse files

[PATCH] Use early CPU identify before early command line parsing 



This makes it possible to modify CPU flags in command line
options without hacks.

And remove another copy in head64.c

Signed-off-by: default avatarAndi Kleen <ak@suse.de>
parent d4d35854

arch/x86_64/kernel/head64.c

+0 −19
Original line number Diff line number Diff line
@@ -56,24 +56,6 @@ static void __init copy_bootdata(char *real_mode_data) 
	printk("Bootdata ok (command line is %s)\n", saved_command_line);	

}



static void __init setup_boot_cpu_data(void)

{

	unsigned int dummy, eax;



	/* get vendor info */

	cpuid(0, (unsigned int *)&boot_cpu_data.cpuid_level,

	      (unsigned int *)&boot_cpu_data.x86_vendor_id[0],

	      (unsigned int *)&boot_cpu_data.x86_vendor_id[8],

	      (unsigned int *)&boot_cpu_data.x86_vendor_id[4]);



	/* get cpu type */

	cpuid(1, &eax, &dummy, &dummy,

		(unsigned int *) &boot_cpu_data.x86_capability);

	boot_cpu_data.x86 = (eax >> 8) & 0xf;

	boot_cpu_data.x86_model = (eax >> 4) & 0xf;

	boot_cpu_data.x86_mask = eax & 0xf;

}



void __init x86_64_start_kernel(char * real_mode_data)

{

	char *s;
@@ -117,6 +99,5 @@ void __init x86_64_start_kernel(char * real_mode_data) 
	if (__pa_symbol(&_end) >= KERNEL_TEXT_SIZE)

		panic("Kernel too big for kernel mapping\n");



	setup_boot_cpu_data();

	start_kernel();

}

arch/x86_64/kernel/setup.c

+2 −2
Original line number Diff line number Diff line
@@ -545,10 +545,10 @@ void __init setup_arch(char **cmdline_p) 
	data_resource.start = virt_to_phys(&_etext);

	data_resource.end = virt_to_phys(&_edata)-1;



	parse_cmdline_early(cmdline_p);



	early_identify_cpu(&boot_cpu_data);



	parse_cmdline_early(cmdline_p);



	/*

	 * partially used pages are not usable - thus

	 * we are rounding upwards: