x86/boot/e820: Rename the basic e820 data types to 'struct e820_entry' and 'struct e820_array'

The 'e820entry' and 'e820map' names have various annoyances:

 - the missing underscore departs from the usual kernel style
   and makes the code look weird,

 - in the past I kept confusing the 'map' with the 'entry', because
   a 'map' is ambiguous in that regard,

 - it's not really clear from the 'e820map' that this is a regular
   C array.

Rename them to 'struct e820_entry' and 'struct e820_array' accordingly.

( Leave the legacy UAPI header alone but do the rename in the bootparam.h
  and e820/types.h file - outside tools relying on these defines should
  either adjust their code, or should use the legacy header, or should
  create their private copies for the definitions. )

No change in functionality.

Cc: Alex Thorlton <athorlton@sgi.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Huang, Ying <ying.huang@intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul Jackson <pj@sgi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: NIngo Molnar <mingo@kernel.org>

Documentation/x86/zero-page.txt

@@ -34,5 +34,5 @@ Offset	Proto	Name		Meaning
 1EF/001	ALL	sentinel	Used to detect broken bootloaders
 290/040	ALL	edd_mbr_sig_buffer EDD MBR signatures
 2D0/A00	ALL	e820_map	E820 memory map table
-				(array of struct e820entry)
+				(array of struct e820_entry)
 D00/1EC	ALL	eddbuf		EDD data (array of struct edd_info)

arch/x86/boot/compressed/eboot.c

@@ -900,7 +900,7 @@ static void add_e820ext(struct boot_params *params,
 	unsigned long size;
 
 	e820ext->type = SETUP_E820_EXT;
-	e820ext->len = nr_entries * sizeof(struct e820entry);
+	e820ext->len = nr_entries * sizeof(struct e820_entry);
 	e820ext->next = 0;
 
 	data = (struct setup_data *)(unsigned long)params->hdr.setup_data;
@@ -917,9 +917,9 @@ static void add_e820ext(struct boot_params *params,
 static efi_status_t setup_e820(struct boot_params *params,
 			       struct setup_data *e820ext, u32 e820ext_size)
 {
-	struct e820entry *e820_map = &params->e820_map[0];
+	struct e820_entry *e820_map = &params->e820_map[0];
 	struct efi_info *efi = &params->efi_info;
-	struct e820entry *prev = NULL;
+	struct e820_entry *prev = NULL;
 	u32 nr_entries;
 	u32 nr_desc;
 	int i;
@@ -983,14 +983,14 @@ static efi_status_t setup_e820(struct boot_params *params,
 		}
 
 		if (nr_entries == ARRAY_SIZE(params->e820_map)) {
-			u32 need = (nr_desc - i) * sizeof(struct e820entry) +
+			u32 need = (nr_desc - i) * sizeof(struct e820_entry) +
 				   sizeof(struct setup_data);
 
 			if (!e820ext || e820ext_size < need)
 				return EFI_BUFFER_TOO_SMALL;
 
 			/* boot_params map full, switch to e820 extended */
-			e820_map = (struct e820entry *)e820ext->data;
+			e820_map = (struct e820_entry *)e820ext->data;
 		}
 
 		e820_map->addr = d->phys_addr;
@@ -1019,7 +1019,7 @@ static efi_status_t alloc_e820ext(u32 nr_desc, struct setup_data **e820ext,
 	unsigned long size;
 
 	size = sizeof(struct setup_data) +
-		sizeof(struct e820entry) * nr_desc;
+		sizeof(struct e820_entry) * nr_desc;
 
 	if (*e820ext) {
 		efi_call_early(free_pool, *e820ext);

arch/x86/boot/compressed/kaslr.c

@@ -426,7 +426,7 @@ static unsigned long slots_fetch_random(void)
 	return 0;
 }
 
-static void process_e820_entry(struct e820entry *entry,
+static void process_e820_entry(struct e820_entry *entry,
 			       unsigned long minimum,
 			       unsigned long image_size)
 {

arch/x86/boot/memory.c

@@ -21,8 +21,8 @@ static int detect_memory_e820(void)
 {
 	int count = 0;
 	struct biosregs ireg, oreg;
-	struct e820entry *desc = boot_params.e820_map;
-	static struct e820entry buf; /* static so it is zeroed */
+	struct e820_entry *desc = boot_params.e820_map;
+	static struct e820_entry buf; /* static so it is zeroed */
 
 	initregs(&ireg);
 	ireg.ax  = 0xe820;

arch/x86/include/asm/e820/api.h

@@ -4,8 +4,8 @@
 #include <asm/e820/types.h>
 
 /* see comment in arch/x86/kernel/e820.c */
-extern struct e820map *e820;
-extern struct e820map *e820_saved;
+extern struct e820_array *e820;
+extern struct e820_array *e820_saved;
 
 extern unsigned long pci_mem_start;
 
@@ -13,7 +13,7 @@ extern int  e820_any_mapped(u64 start, u64 end, unsigned type);
 extern int  e820_all_mapped(u64 start, u64 end, unsigned type);
 extern void e820_add_region(u64 start, u64 size, int type);
 extern void e820_print_map(char *who);
-extern int  sanitize_e820_map(struct e820entry *biosmap, int max_nr_map, u32 *pnr_map);
+extern int  sanitize_e820_map(struct e820_entry *biosmap, int max_nr_map, u32 *pnr_map);
 extern u64  e820_update_range(u64 start, u64 size, unsigned old_type, unsigned new_type);
 extern u64  e820_remove_range(u64 start, u64 size, unsigned old_type, int checktype);
 extern void update_e820(void);

arch/x86/include/asm/e820/types.h

@@ -68,9 +68,9 @@
 /*
  * The whole array of E820 entries:
  */
-struct e820map {
+struct e820_array {
 	__u32 nr_map;
-	struct e820entry map[E820_X_MAX];
+	struct e820_entry map[E820_X_MAX];
 };
 
 /*

arch/x86/include/uapi/asm/bootparam.h

@@ -152,7 +152,7 @@ struct boot_params {
 	struct setup_header hdr;    /* setup header */	/* 0x1f1 */
 	__u8  _pad7[0x290-0x1f1-sizeof(struct setup_header)];
 	__u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX];	/* 0x290 */
-	struct e820entry e820_map[E820MAX];		/* 0x2d0 */
+	struct e820_entry e820_map[E820MAX];		/* 0x2d0 */
 	__u8  _pad8[48];				/* 0xcd0 */
 	struct edd_info eddbuf[EDDMAXNR];		/* 0xd00 */
 	__u8  _pad9[276];				/* 0xeec */

arch/x86/include/uapi/asm/e820/types.h

@@ -10,7 +10,7 @@
  * A single E820 map entry, describing a memory range of [addr...addr+size-1],
  * of 'type' memory type:
  */
-struct e820entry {
+struct e820_entry {
 	__u64 addr;
 	__u64 size;
 	__u32 type;

arch/x86/kernel/crash.c

@@ -504,7 +504,7 @@ static int prepare_elf_headers(struct kimage *image, void **addr,
 	return ret;
 }
 
-static int add_e820_entry(struct boot_params *params, struct e820entry *entry)
+static int add_e820_entry(struct boot_params *params, struct e820_entry *entry)
 {
 	unsigned int nr_e820_entries;
 
@@ -513,7 +513,7 @@ static int add_e820_entry(struct boot_params *params, struct e820entry *entry)
 		return 1;
 
 	memcpy(&params->e820_map[nr_e820_entries], entry,
-			sizeof(struct e820entry));
+			sizeof(struct e820_entry));
 	params->e820_entries++;
 	return 0;
 }
@@ -522,7 +522,7 @@ static int memmap_entry_callback(u64 start, u64 end, void *arg)
 {
 	struct crash_memmap_data *cmd = arg;
 	struct boot_params *params = cmd->params;
-	struct e820entry ei;
+	struct e820_entry ei;
 
 	ei.addr = start;
 	ei.size = end - start + 1;
@@ -561,7 +561,7 @@ int crash_setup_memmap_entries(struct kimage *image, struct boot_params *params)
 {
 	int i, ret = 0;
 	unsigned long flags;
-	struct e820entry ei;
+	struct e820_entry ei;
 	struct crash_memmap_data cmd;
 	struct crash_mem *cmem;
 

arch/x86/kernel/e820.c

@@ -40,10 +40,10 @@
  * user can e.g. boot the original kernel with mem=1G while still booting the
  * next kernel with full memory.
  */
-static struct e820map initial_e820  __initdata;
-static struct e820map initial_e820_saved  __initdata;
-struct e820map *e820 __refdata = &initial_e820;
-struct e820map *e820_saved __refdata = &initial_e820_saved;
+static struct e820_array initial_e820  __initdata;
+static struct e820_array initial_e820_saved  __initdata;
+struct e820_array *e820 __refdata = &initial_e820;
+struct e820_array *e820_saved __refdata = &initial_e820_saved;
 
 /* For PCI or other memory-mapped resources */
 unsigned long pci_mem_start = 0xaeedbabe;
@@ -61,7 +61,7 @@ e820_any_mapped(u64 start, u64 end, unsigned type)
 	int i;
 
 	for (i = 0; i < e820->nr_map; i++) {
-		struct e820entry *ei = &e820->map[i];
+		struct e820_entry *ei = &e820->map[i];
 
 		if (type && ei->type != type)
 			continue;
@@ -84,7 +84,7 @@ int __init e820_all_mapped(u64 start, u64 end, unsigned type)
 	int i;
 
 	for (i = 0; i < e820->nr_map; i++) {
-		struct e820entry *ei = &e820->map[i];
+		struct e820_entry *ei = &e820->map[i];
 
 		if (type && ei->type != type)
 			continue;
@@ -110,7 +110,7 @@ int __init e820_all_mapped(u64 start, u64 end, unsigned type)
 /*
  * Add a memory region to the kernel e820 map.
  */
-static void __init __e820_add_region(struct e820map *e820x, u64 start, u64 size,
+static void __init __e820_add_region(struct e820_array *e820x, u64 start, u64 size,
 					 int type)
 {
 	int x = e820x->nr_map;
@@ -185,7 +185,7 @@ void __init e820_print_map(char *who)
  * numbered type.
  *
  * The input parameter biosmap points to an array of 'struct
- * e820entry' which on entry has elements in the range [0, *pnr_map)
+ * e820_entry' which on entry has elements in the range [0, *pnr_map)
  * valid, and which has space for up to max_nr_map entries.
  * On return, the resulting sanitized e820 map entries will be in
  * overwritten in the same location, starting at biosmap.
@@ -238,7 +238,7 @@ void __init e820_print_map(char *who)
  *	   ______________________4_
  */
 struct change_member {
-	struct e820entry *pbios; /* pointer to original bios entry */
+	struct e820_entry *pbios; /* pointer to original bios entry */
 	unsigned long long addr; /* address for this change point */
 };
 
@@ -259,13 +259,13 @@ static int __init cpcompare(const void *a, const void *b)
 	return (ap->addr != ap->pbios->addr) - (bp->addr != bp->pbios->addr);
 }
 
-int __init sanitize_e820_map(struct e820entry *biosmap, int max_nr_map,
+int __init sanitize_e820_map(struct e820_entry *biosmap, int max_nr_map,
 			     u32 *pnr_map)
 {
 	static struct change_member change_point_list[2*E820_X_MAX] __initdata;
 	static struct change_member *change_point[2*E820_X_MAX] __initdata;
-	static struct e820entry *overlap_list[E820_X_MAX] __initdata;
-	static struct e820entry new_bios[E820_X_MAX] __initdata;
+	static struct e820_entry *overlap_list[E820_X_MAX] __initdata;
+	static struct e820_entry new_bios[E820_X_MAX] __initdata;
 	unsigned long current_type, last_type;
 	unsigned long long last_addr;
 	int chgidx;
@@ -379,13 +379,13 @@ int __init sanitize_e820_map(struct e820entry *biosmap, int max_nr_map,
 	new_nr = new_bios_entry;
 
 	/* copy new bios mapping into original location */
-	memcpy(biosmap, new_bios, new_nr * sizeof(struct e820entry));
+	memcpy(biosmap, new_bios, new_nr * sizeof(struct e820_entry));
 	*pnr_map = new_nr;
 
 	return 0;
 }
 
-static int __init __append_e820_map(struct e820entry *biosmap, int nr_map)
+static int __init __append_e820_map(struct e820_entry *biosmap, int nr_map)
 {
 	while (nr_map) {
 		u64 start = biosmap->addr;
@@ -414,7 +414,7 @@ static int __init __append_e820_map(struct e820entry *biosmap, int nr_map)
  * will have given us a memory map that we can use to properly
  * set up memory.  If we aren't, we'll fake a memory map.
  */
-static int __init append_e820_map(struct e820entry *biosmap, int nr_map)
+static int __init append_e820_map(struct e820_entry *biosmap, int nr_map)
 {
 	/* Only one memory region (or negative)? Ignore it */
 	if (nr_map < 2)
@@ -423,7 +423,7 @@ static int __init append_e820_map(struct e820entry *biosmap, int nr_map)
 	return __append_e820_map(biosmap, nr_map);
 }
 
-static u64 __init __e820_update_range(struct e820map *e820x, u64 start,
+static u64 __init __e820_update_range(struct e820_array *e820x, u64 start,
 					u64 size, unsigned old_type,
 					unsigned new_type)
 {
@@ -445,7 +445,7 @@ static u64 __init __e820_update_range(struct e820map *e820x, u64 start,
 	printk(KERN_CONT "\n");
 
 	for (i = 0; i < e820x->nr_map; i++) {
-		struct e820entry *ei = &e820x->map[i];
+		struct e820_entry *ei = &e820x->map[i];
 		u64 final_start, final_end;
 		u64 ei_end;
 
@@ -524,7 +524,7 @@ u64 __init e820_remove_range(u64 start, u64 size, unsigned old_type,
 	printk(KERN_CONT "\n");
 
 	for (i = 0; i < e820->nr_map; i++) {
-		struct e820entry *ei = &e820->map[i];
+		struct e820_entry *ei = &e820->map[i];
 		u64 final_start, final_end;
 		u64 ei_end;
 
@@ -535,7 +535,7 @@ u64 __init e820_remove_range(u64 start, u64 size, unsigned old_type,
 		/* totally covered? */
 		if (ei->addr >= start && ei_end <= end) {
 			real_removed_size += ei->size;
-			memset(ei, 0, sizeof(struct e820entry));
+			memset(ei, 0, sizeof(struct e820_entry));
 			continue;
 		}
 
@@ -658,16 +658,16 @@ __init void e820_setup_gap(void)
  */
 __init void e820_reallocate_tables(void)
 {
-	struct e820map *n;
+	struct e820_array *n;
 	int size;
 
-	size = offsetof(struct e820map, map) + sizeof(struct e820entry) * e820->nr_map;
+	size = offsetof(struct e820_array, map) + sizeof(struct e820_entry) * e820->nr_map;
 	n = kmalloc(size, GFP_KERNEL);
 	BUG_ON(!n);
 	memcpy(n, e820, size);
 	e820 = n;
 
-	size = offsetof(struct e820map, map) + sizeof(struct e820entry) * e820_saved->nr_map;
+	size = offsetof(struct e820_array, map) + sizeof(struct e820_entry) * e820_saved->nr_map;
 	n = kmalloc(size, GFP_KERNEL);
 	BUG_ON(!n);
 	memcpy(n, e820_saved, size);
@@ -683,12 +683,12 @@ __init void e820_reallocate_tables(void)
 void __init parse_e820_ext(u64 phys_addr, u32 data_len)
 {
 	int entries;
-	struct e820entry *extmap;
+	struct e820_entry *extmap;
 	struct setup_data *sdata;
 
 	sdata = early_memremap(phys_addr, data_len);
-	entries = sdata->len / sizeof(struct e820entry);
-	extmap = (struct e820entry *)(sdata->data);
+	entries = sdata->len / sizeof(struct e820_entry);
+	extmap = (struct e820_entry *)(sdata->data);
 	__append_e820_map(extmap, entries);
 	sanitize_e820_map(e820->map, ARRAY_SIZE(e820->map), &e820->nr_map);
 	early_memunmap(sdata, data_len);
@@ -712,7 +712,7 @@ void __init e820_mark_nosave_regions(unsigned long limit_pfn)
 	unsigned long pfn = 0;
 
 	for (i = 0; i < e820->nr_map; i++) {
-		struct e820entry *ei = &e820->map[i];
+		struct e820_entry *ei = &e820->map[i];
 
 		if (pfn < PFN_UP(ei->addr))
 			register_nosave_region(pfn, PFN_UP(ei->addr));
@@ -738,7 +738,7 @@ static int __init e820_mark_nvs_memory(void)
 	int i;
 
 	for (i = 0; i < e820->nr_map; i++) {
-		struct e820entry *ei = &e820->map[i];
+		struct e820_entry *ei = &e820->map[i];
 
 		if (ei->type == E820_NVS)
 			acpi_nvs_register(ei->addr, ei->size);
@@ -786,7 +786,7 @@ static unsigned long __init e820_end_pfn(unsigned long limit_pfn, unsigned type)
 	unsigned long max_arch_pfn = MAX_ARCH_PFN;
 
 	for (i = 0; i < e820->nr_map; i++) {
-		struct e820entry *ei = &e820->map[i];
+		struct e820_entry *ei = &e820->map[i];
 		unsigned long start_pfn;
 		unsigned long end_pfn;
 
@@ -1040,7 +1040,7 @@ void __init e820_reserve_resources(void)
 	}
 
 	for (i = 0; i < e820_saved->nr_map; i++) {
-		struct e820entry *entry = &e820_saved->map[i];
+		struct e820_entry *entry = &e820_saved->map[i];
 		firmware_map_add_early(entry->addr,
 			entry->addr + entry->size,
 			e820_type_to_string(entry->type));
@@ -1083,7 +1083,7 @@ void __init e820_reserve_resources_late(void)
 	 * avoid stolen RAM:
 	 */
 	for (i = 0; i < e820->nr_map; i++) {
-		struct e820entry *entry = &e820->map[i];
+		struct e820_entry *entry = &e820->map[i];
 		u64 start, end;
 
 		if (entry->type != E820_RAM)
@@ -1145,7 +1145,7 @@ void __init setup_memory_map(void)
 	char *who;
 
 	who = x86_init.resources.memory_setup();
-	memcpy(e820_saved, e820, sizeof(struct e820map));
+	memcpy(e820_saved, e820, sizeof(struct e820_array));
 	printk(KERN_INFO "e820: BIOS-provided physical RAM map:\n");
 	e820_print_map(who);
 }
@@ -1163,7 +1163,7 @@ void __init memblock_x86_fill(void)
 	memblock_allow_resize();
 
 	for (i = 0; i < e820->nr_map; i++) {
-		struct e820entry *ei = &e820->map[i];
+		struct e820_entry *ei = &e820->map[i];
 
 		end = ei->addr + ei->size;
 		if (end != (resource_size_t)end)

arch/x86/kernel/kexec-bzimage64.c

@@ -108,7 +108,7 @@ static int setup_e820_entries(struct boot_params *params)
 
 	params->e820_entries = nr_e820_entries;
 	memcpy(&params->e820_map, &e820_saved->map,
-	       nr_e820_entries * sizeof(struct e820entry));
+	       nr_e820_entries * sizeof(struct e820_entry));
 
 	return 0;
 }

arch/x86/kernel/resource.c

@@ -25,7 +25,7 @@ static void resource_clip(struct resource *res, resource_size_t start,
 static void remove_e820_regions(struct resource *avail)
 {
 	int i;
-	struct e820entry *entry;
+	struct e820_entry *entry;
 
 	for (i = 0; i < e820->nr_map; i++) {
 		entry = &e820->map[i];

arch/x86/kernel/setup.c

@@ -459,7 +459,7 @@ static void __init e820_reserve_setup_data(void)
 	}
 
 	sanitize_e820_map(e820->map, ARRAY_SIZE(e820->map), &e820->nr_map);
-	memcpy(e820_saved, e820, sizeof(struct e820map));
+	memcpy(e820_saved, e820, sizeof(struct e820_array));
 	printk(KERN_INFO "extended physical RAM map:\n");
 	e820_print_map("reserve setup_data");
 }

arch/x86/power/hibernate_64.c

@@ -201,7 +201,7 @@ struct restore_data_record {
  * @map: the e820 map to be calculated
  * @buf: the md5 result to be stored to
  */
-static int get_e820_md5(struct e820map *map, void *buf)
+static int get_e820_md5(struct e820_array *map, void *buf)
 {
 	struct scatterlist sg;
 	struct crypto_ahash *tfm;
@@ -214,8 +214,8 @@ static int get_e820_md5(struct e820map *map, void *buf)
 
 	{
 		AHASH_REQUEST_ON_STACK(req, tfm);
-		size = offsetof(struct e820map, map)
-			+ sizeof(struct e820entry) * map->nr_map;
+		size = offsetof(struct e820_array, map)
+			+ sizeof(struct e820_entry) * map->nr_map;
 		ahash_request_set_tfm(req, tfm);
 		sg_init_one(&sg, (u8 *)map, size);
 		ahash_request_set_callback(req, 0, NULL, NULL);

arch/x86/xen/setup.c

@@ -41,7 +41,7 @@ struct xen_memory_region xen_extra_mem[XEN_EXTRA_MEM_MAX_REGIONS] __initdata;
 unsigned long xen_released_pages;
 
 /* E820 map used during setting up memory. */
-static struct e820entry xen_e820_map[E820_X_MAX] __initdata;
+static struct e820_entry xen_e820_map[E820_X_MAX] __initdata;
 static u32 xen_e820_map_entries __initdata;
 
 /*
@@ -198,7 +198,7 @@ void __init xen_inv_extra_mem(void)
  */
 static unsigned long __init xen_find_pfn_range(unsigned long *min_pfn)
 {
-	const struct e820entry *entry = xen_e820_map;
+	const struct e820_entry *entry = xen_e820_map;
 	unsigned int i;
 	unsigned long done = 0;
 
@@ -457,7 +457,7 @@ static unsigned long __init xen_foreach_remap_area(unsigned long nr_pages,
 {
 	phys_addr_t start = 0;
 	unsigned long ret_val = 0;
-	const struct e820entry *entry = xen_e820_map;
+	const struct e820_entry *entry = xen_e820_map;
 	int i;
 
 	/*
@@ -601,7 +601,7 @@ static void __init xen_align_and_add_e820_region(phys_addr_t start,
 
 static void __init xen_ignore_unusable(void)
 {
-	struct e820entry *entry = xen_e820_map;
+	struct e820_entry *entry = xen_e820_map;
 	unsigned int i;
 
 	for (i = 0; i < xen_e820_map_entries; i++, entry++) {
@@ -612,7 +612,7 @@ static void __init xen_ignore_unusable(void)
 
 bool __init xen_is_e820_reserved(phys_addr_t start, phys_addr_t size)
 {
-	struct e820entry *entry;
+	struct e820_entry *entry;
 	unsigned mapcnt;
 	phys_addr_t end;
 
@@ -645,7 +645,7 @@ phys_addr_t __init xen_find_free_area(phys_addr_t size)
 {
 	unsigned mapcnt;
 	phys_addr_t addr, start;
-	struct e820entry *entry = xen_e820_map;
+	struct e820_entry *entry = xen_e820_map;
 
 	for (mapcnt = 0; mapcnt < xen_e820_map_entries; mapcnt++, entry++) {
 		if (entry->type != E820_RAM || entry->size < size)

tools/lguest/lguest.c

@@ -3339,7 +3339,7 @@ int main(int argc, char *argv[])
 	 * simple, single region.
 	 */
 	boot->e820_entries = 1;
-	boot->e820_map[0] = ((struct e820entry) { 0, mem, E820_RAM });
+	boot->e820_map[0] = ((struct e820_entry) { 0, mem, E820_RAM });
 	/*
 	 * The boot header contains a command line pointer: we put the command
 	 * line after the boot header.