diff options
Diffstat (limited to 'arch/i386/kernel/head.S')
-rw-r--r-- | arch/i386/kernel/head.S | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/arch/i386/kernel/head.S b/arch/i386/kernel/head.S index 6c7f71176977..734be5572eb9 100644 --- a/arch/i386/kernel/head.S +++ b/arch/i386/kernel/head.S | |||
@@ -53,6 +53,7 @@ | |||
53 | * any particular GDT layout, because we load our own as soon as we | 53 | * any particular GDT layout, because we load our own as soon as we |
54 | * can. | 54 | * can. |
55 | */ | 55 | */ |
56 | .section .text.head,"ax",@progbits | ||
56 | ENTRY(startup_32) | 57 | ENTRY(startup_32) |
57 | 58 | ||
58 | #ifdef CONFIG_PARAVIRT | 59 | #ifdef CONFIG_PARAVIRT |
@@ -141,16 +142,25 @@ page_pde_offset = (__PAGE_OFFSET >> 20); | |||
141 | jb 10b | 142 | jb 10b |
142 | movl %edi,(init_pg_tables_end - __PAGE_OFFSET) | 143 | movl %edi,(init_pg_tables_end - __PAGE_OFFSET) |
143 | 144 | ||
144 | #ifdef CONFIG_SMP | ||
145 | xorl %ebx,%ebx /* This is the boot CPU (BSP) */ | 145 | xorl %ebx,%ebx /* This is the boot CPU (BSP) */ |
146 | jmp 3f | 146 | jmp 3f |
147 | |||
148 | /* | 147 | /* |
149 | * Non-boot CPU entry point; entered from trampoline.S | 148 | * Non-boot CPU entry point; entered from trampoline.S |
150 | * We can't lgdt here, because lgdt itself uses a data segment, but | 149 | * We can't lgdt here, because lgdt itself uses a data segment, but |
151 | * we know the trampoline has already loaded the boot_gdt_table GDT | 150 | * we know the trampoline has already loaded the boot_gdt_table GDT |
152 | * for us. | 151 | * for us. |
152 | * | ||
153 | * If cpu hotplug is not supported then this code can go in init section | ||
154 | * which will be freed later | ||
153 | */ | 155 | */ |
156 | |||
157 | #ifdef CONFIG_HOTPLUG_CPU | ||
158 | .section .text,"ax",@progbits | ||
159 | #else | ||
160 | .section .init.text,"ax",@progbits | ||
161 | #endif | ||
162 | |||
163 | #ifdef CONFIG_SMP | ||
154 | ENTRY(startup_32_smp) | 164 | ENTRY(startup_32_smp) |
155 | cld | 165 | cld |
156 | movl $(__BOOT_DS),%eax | 166 | movl $(__BOOT_DS),%eax |
@@ -208,8 +218,8 @@ ENTRY(startup_32_smp) | |||
208 | xorl %ebx,%ebx | 218 | xorl %ebx,%ebx |
209 | incl %ebx | 219 | incl %ebx |
210 | 220 | ||
211 | 3: | ||
212 | #endif /* CONFIG_SMP */ | 221 | #endif /* CONFIG_SMP */ |
222 | 3: | ||
213 | 223 | ||
214 | /* | 224 | /* |
215 | * Enable paging | 225 | * Enable paging |
@@ -492,6 +502,7 @@ ignore_int: | |||
492 | #endif | 502 | #endif |
493 | iret | 503 | iret |
494 | 504 | ||
505 | .section .text | ||
495 | #ifdef CONFIG_PARAVIRT | 506 | #ifdef CONFIG_PARAVIRT |
496 | startup_paravirt: | 507 | startup_paravirt: |
497 | cld | 508 | cld |