[PATCH for review] [88/145] x86_64: Use early CPU identify before early command line parsing

Andi Kleen
2006-08-10T20:04:15Z

r

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

And remove another copy in head64.c

Signed-off-by: Andi Kleen <ak@suse.de>

---
arch/x86_64/kernel/head64.c | 19 -------------------
arch/x86_64/kernel/setup.c | 4 ++--
2 files changed, 2 insertions(+), 21 deletions(-)

Index: linux/arch/x86_64/kernel/head64.c
===================================================================
--- linux.orig/arch/x86_64/kernel/head64.c
+++ linux/arch/x86_64/kernel/head64.c
@@ -56,24 +56,6 @@ static void __init copy_bootdata(char *r
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 * r
if (__pa_symbol(&_end) >= KERNEL_TEXT_SIZE)
panic("Kernel too big for kernel mapping\n");

- setup_boot_cpu_data();
start_kernel();
}
Index: linux/arch/x86_64/kernel/setup.c
===================================================================
--- linux.orig/arch/x86_64/kernel/setup.c
+++ linux/arch/x86_64/kernel/setup.c
@@ -547,10 +547,10 @@ 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: