Jeremy Fitzhardinge | c169859d | 2007-05-02 19:27:12 +0200 | [diff] [blame] | 1 | /* |
Jeremy Fitzhardinge | c169859d | 2007-05-02 19:27:12 +0200 | [diff] [blame] | 2 | * Copyright (C) 1994 Linus Torvalds |
| 3 | * Copyright (C) 2000 SuSE |
Jeremy Fitzhardinge | c169859d | 2007-05-02 19:27:12 +0200 | [diff] [blame] | 4 | */ |
| 5 | |
| 6 | #include <linux/kernel.h> |
Jeremy Fitzhardinge | 57decbd | 2007-05-02 19:27:16 +0200 | [diff] [blame] | 7 | #include <linux/init.h> |
Jeremy Fitzhardinge | c169859d | 2007-05-02 19:27:12 +0200 | [diff] [blame] | 8 | #include <asm/alternative.h> |
Josh Triplett | dd22a68 | 2007-07-31 00:39:21 -0700 | [diff] [blame] | 9 | #include <asm/bugs.h> |
Jeremy Fitzhardinge | c169859d | 2007-05-02 19:27:12 +0200 | [diff] [blame] | 10 | #include <asm/processor.h> |
Andi Kleen | 0a203a4 | 2007-05-12 17:27:40 +0200 | [diff] [blame] | 11 | #include <asm/mtrr.h> |
Andi Kleen | f5c24a7 | 2008-03-12 03:53:30 +0100 | [diff] [blame] | 12 | #include <asm/cacheflush.h> |
Jeremy Fitzhardinge | c169859d | 2007-05-02 19:27:12 +0200 | [diff] [blame] | 13 | |
| 14 | void __init check_bugs(void) |
| 15 | { |
Glauber de Oliveira Costa | 5745abf | 2008-03-19 14:25:03 -0300 | [diff] [blame] | 16 | identify_boot_cpu(); |
Jeremy Fitzhardinge | c169859d | 2007-05-02 19:27:12 +0200 | [diff] [blame] | 17 | #if !defined(CONFIG_SMP) |
| 18 | printk("CPU: "); |
| 19 | print_cpu_info(&boot_cpu_data); |
| 20 | #endif |
| 21 | alternative_instructions(); |
Andi Kleen | f5c24a7 | 2008-03-12 03:53:30 +0100 | [diff] [blame] | 22 | |
| 23 | /* |
| 24 | * Make sure the first 2MB area is not mapped by huge pages |
| 25 | * There are typically fixed size MTRRs in there and overlapping |
| 26 | * MTRRs into large pages causes slow downs. |
| 27 | * |
| 28 | * Right now we don't do that with gbpages because there seems |
| 29 | * very little benefit for that case. |
| 30 | */ |
| 31 | if (!direct_gbpages) |
| 32 | set_memory_4k((unsigned long)__va(0), 1); |
Jeremy Fitzhardinge | c169859d | 2007-05-02 19:27:12 +0200 | [diff] [blame] | 33 | } |