mirror of
https://gitee.com/openharmony/kernel_linux
synced 2025-05-28 18:16:56 +00:00
4d1640927b
Move the boot-time FPU bug detection code to the other FPU boot time init code in fpu/init.c. No change in code size: text data bss dec hex filename 13044568 1884440 1130496 16059504 f50c70 vmlinux.before 13044568 1884440 1130496 16059504 f50c70 vmlinux.after Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
44 lines
1.0 KiB
C
44 lines
1.0 KiB
C
/*
|
|
* Copyright (C) 1994 Linus Torvalds
|
|
*
|
|
* Cyrix stuff, June 1998 by:
|
|
* - Rafael R. Reilova (moved everything from head.S),
|
|
* <rreilova@ececs.uc.edu>
|
|
* - Channing Corn (tests & fixes),
|
|
* - Andrew D. Balsa (code cleanup).
|
|
*/
|
|
#include <linux/init.h>
|
|
#include <linux/utsname.h>
|
|
#include <asm/bugs.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/processor-flags.h>
|
|
#include <asm/i387.h>
|
|
#include <asm/msr.h>
|
|
#include <asm/paravirt.h>
|
|
#include <asm/alternative.h>
|
|
|
|
void __init check_bugs(void)
|
|
{
|
|
identify_boot_cpu();
|
|
#ifndef CONFIG_SMP
|
|
pr_info("CPU: ");
|
|
print_cpu_info(&boot_cpu_data);
|
|
#endif
|
|
|
|
/*
|
|
* Check whether we are able to run this kernel safely on SMP.
|
|
*
|
|
* - i386 is no longer supported.
|
|
* - In order to run on anything without a TSC, we need to be
|
|
* compiled for a i486.
|
|
*/
|
|
if (boot_cpu_data.x86 < 4)
|
|
panic("Kernel requires i486+ for 'invlpg' and other features");
|
|
|
|
init_utsname()->machine[1] =
|
|
'0' + (boot_cpu_data.x86 > 6 ? 6 : boot_cpu_data.x86);
|
|
alternative_instructions();
|
|
|
|
fpu__init_check_bugs();
|
|
}
|