diff options
Diffstat (limited to 'arch/x86/kernel/head_64.S')
| -rw-r--r-- | arch/x86/kernel/head_64.S | 46 |
1 files changed, 22 insertions, 24 deletions
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index eb415043a929..10a1955bb1d1 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -132,10 +132,6 @@ ident_complete: addq %rbp, trampoline_level4_pgt + 0(%rip) addq %rbp, trampoline_level4_pgt + (511*8)(%rip) #endif -#ifdef CONFIG_ACPI_SLEEP - addq %rbp, wakeup_level4_pgt + 0(%rip) - addq %rbp, wakeup_level4_pgt + (511*8)(%rip) -#endif /* Due to ENTRY(), sometimes the empty space gets filled with * zeros. Better take a jmp than relying on empty space being @@ -267,21 +263,16 @@ ENTRY(secondary_startup_64) bad_address: jmp bad_address + .section ".init.text","ax" #ifdef CONFIG_EARLY_PRINTK -.macro early_idt_tramp first, last - .ifgt \last-\first - early_idt_tramp \first, \last-1 - .endif - movl $\last,%esi - jmp early_idt_handler -.endm - .globl early_idt_handlers early_idt_handlers: - early_idt_tramp 0, 63 - early_idt_tramp 64, 127 - early_idt_tramp 128, 191 - early_idt_tramp 192, 255 + i = 0 + .rept NUM_EXCEPTION_VECTORS + movl $i, %esi + jmp early_idt_handler + i = i + 1 + .endr #endif ENTRY(early_idt_handler) @@ -327,6 +318,7 @@ early_idt_msg: early_idt_ripmsg: .asciz "RIP %s\n" #endif /* CONFIG_EARLY_PRINTK */ + .previous .balign PAGE_SIZE @@ -379,18 +371,24 @@ NEXT_PAGE(level2_ident_pgt) /* Since I easily can, map the first 1G. * Don't set NX because code runs from these pages. */ - PMDS(0x0000000000000000, __PAGE_KERNEL_LARGE_EXEC, PTRS_PER_PMD) + PMDS(0, __PAGE_KERNEL_LARGE_EXEC, PTRS_PER_PMD) NEXT_PAGE(level2_kernel_pgt) - /* 40MB kernel mapping. The kernel code cannot be bigger than that. - When you change this change KERNEL_TEXT_SIZE in page.h too. */ - /* (2^48-(2*1024*1024*1024)-((2^39)*511)-((2^30)*510)) = 0 */ - PMDS(0x0000000000000000, __PAGE_KERNEL_LARGE_EXEC|_PAGE_GLOBAL, KERNEL_TEXT_SIZE/PMD_SIZE) - /* Module mapping starts here */ - .fill (PTRS_PER_PMD - (KERNEL_TEXT_SIZE/PMD_SIZE)),8,0 + /* + * 512 MB kernel mapping. We spend a full page on this pagetable + * anyway. + * + * The kernel code+data+bss must not be bigger than that. + * + * (NOTE: at +512MB starts the module area, see MODULES_VADDR. + * If you want to increase this then increase MODULES_VADDR + * too.) + */ + PMDS(0, __PAGE_KERNEL_LARGE_EXEC|_PAGE_GLOBAL, + KERNEL_IMAGE_SIZE/PMD_SIZE) NEXT_PAGE(level2_spare_pgt) - .fill 512,8,0 + .fill 512, 8, 0 #undef PMDS #undef NEXT_PAGE |