C++ (Cpp) cleanup_highmap Examples

Example #1

File: head64.c Project: deepikateriar/Onlive-Source-Backup

void __init x86_64_start_kernel(char * real_mode_data)
{
	int i;

	/*
	 * Build-time sanity checks on the kernel image and module
	 * area mappings. (these are purely build-time and produce no code)
	 */
	BUILD_BUG_ON(MODULES_VADDR < KERNEL_IMAGE_START);
	BUILD_BUG_ON(MODULES_VADDR-KERNEL_IMAGE_START < KERNEL_IMAGE_SIZE);
	BUILD_BUG_ON(MODULES_LEN + KERNEL_IMAGE_SIZE > 2*PUD_SIZE);
	BUILD_BUG_ON((KERNEL_IMAGE_START & ~PMD_MASK) != 0);
	BUILD_BUG_ON((MODULES_VADDR & ~PMD_MASK) != 0);
	BUILD_BUG_ON(!(MODULES_VADDR > __START_KERNEL));
	BUILD_BUG_ON(!(((MODULES_END - 1) & PGDIR_MASK) ==
				(__START_KERNEL & PGDIR_MASK)));
	BUILD_BUG_ON(__fix_to_virt(__end_of_fixed_addresses) <= MODULES_END);

	/* clear bss before set_intr_gate with early_idt_handler */
	clear_bss();

	/* Make NULL pointers segfault */
	zap_identity_mappings();

	/* Cleanup the over mapped high alias */
	cleanup_highmap();

	for (i = 0; i < NUM_EXCEPTION_VECTORS; i++) {
#ifdef CONFIG_EARLY_PRINTK
		set_intr_gate(i, &early_idt_handlers[i]);
#else
		set_intr_gate(i, early_idt_handler);
#endif
	}
	load_idt((const struct desc_ptr *)&idt_descr);

	early_printk("Kernel alive\n");

	x86_64_init_pda();

	early_printk("Kernel really alive\n");

	x86_64_start_reservations(real_mode_data);
}

Example #2

File: head64.c Project: janrinze/loox7xxport

void __init x86_64_start_kernel(char * real_mode_data)
{
	int i;

	/*
	 * Build-time sanity checks on the kernel image and module
	 * area mappings. (these are purely build-time and produce no code)
	 */
	BUILD_BUG_ON(MODULES_VADDR < KERNEL_IMAGE_START);
	BUILD_BUG_ON(MODULES_VADDR-KERNEL_IMAGE_START < KERNEL_IMAGE_SIZE);
	BUILD_BUG_ON(MODULES_LEN + KERNEL_IMAGE_SIZE > 2*PUD_SIZE);
	BUILD_BUG_ON((KERNEL_IMAGE_START & ~PMD_MASK) != 0);
	BUILD_BUG_ON((MODULES_VADDR & ~PMD_MASK) != 0);
	BUILD_BUG_ON(!(MODULES_VADDR > __START_KERNEL));
	BUILD_BUG_ON(!(((MODULES_END - 1) & PGDIR_MASK) ==
				(__START_KERNEL & PGDIR_MASK)));

	/* clear bss before set_intr_gate with early_idt_handler */
	clear_bss();

	/* Make NULL pointers segfault */
	zap_identity_mappings();

	/* Cleanup the over mapped high alias */
	cleanup_highmap();

	for (i = 0; i < NUM_EXCEPTION_VECTORS; i++) {
#ifdef CONFIG_EARLY_PRINTK
		set_intr_gate(i, &early_idt_handlers[i]);
#else
		set_intr_gate(i, early_idt_handler);
#endif
	}
	load_idt((const struct desc_ptr *)&idt_descr);

	early_printk("Kernel alive\n");

 	for (i = 0; i < NR_CPUS; i++)
 		cpu_pda(i) = &boot_cpu_pda[i];

	pda_init(0);
	copy_bootdata(__va(real_mode_data));

	reserve_early(__pa_symbol(&_text), __pa_symbol(&_end), "TEXT DATA BSS");

#ifdef CONFIG_BLK_DEV_INITRD
	/* Reserve INITRD */
	if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) {
		unsigned long ramdisk_image = boot_params.hdr.ramdisk_image;
		unsigned long ramdisk_size  = boot_params.hdr.ramdisk_size;
		unsigned long ramdisk_end   = ramdisk_image + ramdisk_size;
		reserve_early(ramdisk_image, ramdisk_end, "RAMDISK");
	}
#endif

	reserve_ebda_region();
	reserve_setup_data();

	/*
	 * At this point everything still needed from the boot loader
	 * or BIOS or kernel text should be early reserved or marked not
	 * RAM in e820. All other memory is free game.
	 */

	start_kernel();
}