x86/boot/e820: Prefix the E820_* type names with "E820_TYPE_"

So there's a number of constants that start with "E820" but which
are not types - these create a confusing mixture when seen together
with 'enum e820_type' values:

	E820MAP
	E820NR
	E820_X_MAX
	E820MAX

To better differentiate the 'enum e820_type' values prefix them
with E820_TYPE_.

No change in functionality.

Cc: Alex Thorlton <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Brian Gerst <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: Denys Vlasenko <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Huang, Ying <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Cc: Juergen Gross <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Paul Jackson <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Wei Yang <[email protected]>
Cc: Yinghai Lu <[email protected]>
Cc: [email protected]
Signed-off-by: Ingo Molnar <[email protected]>

arch/x86/boot/compressed/eboot.c

@@ -944,31 +944,31 @@ static efi_status_t setup_e820(struct boot_params *params,
 		case EFI_MEMORY_MAPPED_IO:
 		case EFI_MEMORY_MAPPED_IO_PORT_SPACE:
 		case EFI_PAL_CODE:
-			e820_type = E820_RESERVED;
+			e820_type = E820_TYPE_RESERVED;
 			break;
 
 		case EFI_UNUSABLE_MEMORY:
-			e820_type = E820_UNUSABLE;
+			e820_type = E820_TYPE_UNUSABLE;
 			break;
 
 		case EFI_ACPI_RECLAIM_MEMORY:
-			e820_type = E820_ACPI;
+			e820_type = E820_TYPE_ACPI;
 			break;
 
 		case EFI_LOADER_CODE:
 		case EFI_LOADER_DATA:
 		case EFI_BOOT_SERVICES_CODE:
 		case EFI_BOOT_SERVICES_DATA:
 		case EFI_CONVENTIONAL_MEMORY:
-			e820_type = E820_RAM;
+			e820_type = E820_TYPE_RAM;
 			break;
 
 		case EFI_ACPI_MEMORY_NVS:
-			e820_type = E820_NVS;
+			e820_type = E820_TYPE_NVS;
 			break;
 
 		case EFI_PERSISTENT_MEMORY:
-			e820_type = E820_PMEM;
+			e820_type = E820_TYPE_PMEM;
 			break;
 
 		default:

arch/x86/boot/compressed/kaslr.c

@@ -435,7 +435,7 @@ static void process_e820_entry(struct e820_entry *entry,
 	unsigned long start_orig;
 
 	/* Skip non-RAM entries. */
-	if (entry->type != E820_RAM)
+	if (entry->type != E820_TYPE_RAM)
 		return;
 
 	/* On 32-bit, ignore entries entirely above our maximum. */

arch/x86/include/asm/gart.h

@@ -97,7 +97,7 @@ static inline int aperture_valid(u64 aper_base, u32 aper_size, u32 min_size)
 		printk(KERN_INFO "Aperture beyond 4GB. Ignoring.\n");
 		return 0;
 	}
-	if (e820__mapped_any(aper_base, aper_base + aper_size, E820_RAM)) {
+	if (e820__mapped_any(aper_base, aper_base + aper_size, E820_TYPE_RAM)) {
 		printk(KERN_INFO "Aperture pointing to e820 RAM. Ignoring.\n");
 		return 0;
 	}

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

@@ -7,12 +7,12 @@
 #ifndef __ASSEMBLY__
 
 enum e820_type {
-	E820_RAM		= 1,
-	E820_RESERVED		= 2,
-	E820_ACPI		= 3,
-	E820_NVS		= 4,
-	E820_UNUSABLE		= 5,
-	E820_PMEM		= 7,
+	E820_TYPE_RAM		= 1,
+	E820_TYPE_RESERVED	= 2,
+	E820_TYPE_ACPI		= 3,
+	E820_TYPE_NVS		= 4,
+	E820_TYPE_UNUSABLE	= 5,
+	E820_TYPE_PMEM		= 7,
 
 	/*
 	 * This is a non-standardized way to represent ADR or
@@ -25,7 +25,7 @@ enum e820_type {
 	 *   type of memory, but newer versions switched to 12 as
 	 *   6 was assigned differently. Some time they will learn... )
 	 */
-	E820_PRAM		= 12,
+	E820_TYPE_PRAM		= 12,
 
 	/*
 	 * Reserved RAM used by the kernel itself if
@@ -34,7 +34,7 @@ enum e820_type {
 	 * and so should not include any memory that the BIOS
 	 * might alter over the S3 transition:
 	 */
-	E820_RESERVED_KERN	= 128,
+	E820_TYPE_RESERVED_KERN	= 128,
 };
 
 /*

arch/x86/kernel/acpi/boot.c

@@ -1715,6 +1715,6 @@ int __acpi_release_global_lock(unsigned int *lock)
 
 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
 {
-	e820__range_add(addr, size, E820_ACPI);
+	e820__range_add(addr, size, E820_TYPE_ACPI);
 	e820__update_table_print();
 }

arch/x86/kernel/aperture_64.c

@@ -307,11 +307,11 @@ void __init early_gart_iommu_check(void)
 
 	if (gart_fix_e820 && !fix && aper_enabled) {
 		if (e820__mapped_any(aper_base, aper_base + aper_size,
-				    E820_RAM)) {
+				    E820_TYPE_RAM)) {
 			/* reserve it, so we can reuse it in second kernel */
 			pr_info("e820: reserve [mem %#010Lx-%#010Lx] for GART\n",
 				aper_base, aper_base + aper_size - 1);
-			e820__range_add(aper_base, aper_size, E820_RESERVED);
+			e820__range_add(aper_base, aper_size, E820_TYPE_RESERVED);
 			e820__update_table_print();
 		}
 	}

arch/x86/kernel/cpu/mtrr/cleanup.c

@@ -860,7 +860,7 @@ real_trim_memory(unsigned long start_pfn, unsigned long limit_pfn)
 	trim_size <<= PAGE_SHIFT;
 	trim_size -= trim_start;
 
-	return e820__range_update(trim_start, trim_size, E820_RAM, E820_RESERVED);
+	return e820__range_update(trim_start, trim_size, E820_TYPE_RAM, E820_TYPE_RESERVED);
 }
 
 /**

arch/x86/kernel/crash.c

@@ -575,25 +575,25 @@ int crash_setup_memmap_entries(struct kimage *image, struct boot_params *params)
 	/* Add first 640K segment */
 	ei.addr = image->arch.backup_src_start;
 	ei.size = image->arch.backup_src_sz;
-	ei.type = E820_RAM;
+	ei.type = E820_TYPE_RAM;
 	add_e820_entry(params, &ei);
 
 	/* Add ACPI tables */
-	cmd.type = E820_ACPI;
+	cmd.type = E820_TYPE_ACPI;
 	flags = IORESOURCE_MEM | IORESOURCE_BUSY;
 	walk_iomem_res_desc(IORES_DESC_ACPI_TABLES, flags, 0, -1, &cmd,
 		       memmap_entry_callback);
 
 	/* Add ACPI Non-volatile Storage */
-	cmd.type = E820_NVS;
+	cmd.type = E820_TYPE_NVS;
 	walk_iomem_res_desc(IORES_DESC_ACPI_NV_STORAGE, flags, 0, -1, &cmd,
 			memmap_entry_callback);
 
 	/* Add crashk_low_res region */
 	if (crashk_low_res.end) {
 		ei.addr = crashk_low_res.start;
 		ei.size = crashk_low_res.end - crashk_low_res.start + 1;
-		ei.type = E820_RAM;
+		ei.type = E820_TYPE_RAM;
 		add_e820_entry(params, &ei);
 	}
 
@@ -610,7 +610,7 @@ int crash_setup_memmap_entries(struct kimage *image, struct boot_params *params)
 		if (ei.size < PAGE_SIZE)
 			continue;
 		ei.addr = cmem->ranges[i].start;
-		ei.type = E820_RAM;
+		ei.type = E820_TYPE_RAM;
 		add_e820_entry(params, &ei);
 	}
 

arch/x86/kernel/e820.c

@@ -148,14 +148,14 @@ void __init e820__range_add(u64 start, u64 size, enum e820_type type)
 static void __init e820_print_type(enum e820_type type)
 {
 	switch (type) {
-	case E820_RAM:			/* Fall through: */
-	case E820_RESERVED_KERN:	pr_cont("usable");			break;
-	case E820_RESERVED:		pr_cont("reserved");			break;
-	case E820_ACPI:			pr_cont("ACPI data");			break;
-	case E820_NVS:			pr_cont("ACPI NVS");			break;
-	case E820_UNUSABLE:		pr_cont("unusable");			break;
-	case E820_PMEM:			/* Fall through: */
-	case E820_PRAM:			pr_cont("persistent (type %u)", type);	break;
+	case E820_TYPE_RAM:		/* Fall through: */
+	case E820_TYPE_RESERVED_KERN:	pr_cont("usable");			break;
+	case E820_TYPE_RESERVED:	pr_cont("reserved");			break;
+	case E820_TYPE_ACPI:		pr_cont("ACPI data");			break;
+	case E820_TYPE_NVS:		pr_cont("ACPI NVS");			break;
+	case E820_TYPE_UNUSABLE:	pr_cont("unusable");			break;
+	case E820_TYPE_PMEM:		/* Fall through: */
+	case E820_TYPE_PRAM:		pr_cont("persistent (type %u)", type);	break;
 	default:			pr_cont("type %u", type);		break;
 	}
 }
@@ -340,7 +340,7 @@ int __init e820__update_table(struct e820_entry *biosmap, int max_nr_map, u32 *p
 		}
 
 		/* Continue building up new BIOS map based on this information: */
-		if (current_type != last_type || current_type == E820_PRAM) {
+		if (current_type != last_type || current_type == E820_TYPE_PRAM) {
 			if (last_type != 0)	 {
 				new_bios[new_bios_entry].size = change_point[chgidx]->addr - last_addr;
 				/* Move forward only if the new size was non-zero: */
@@ -704,7 +704,7 @@ void __init e820_mark_nosave_regions(unsigned long limit_pfn)
 
 		pfn = PFN_DOWN(entry->addr + entry->size);
 
-		if (entry->type != E820_RAM && entry->type != E820_RESERVED_KERN)
+		if (entry->type != E820_TYPE_RAM && entry->type != E820_TYPE_RESERVED_KERN)
 			register_nosave_region(PFN_UP(entry->addr), pfn);
 
 		if (pfn >= limit_pfn)
@@ -724,7 +724,7 @@ static int __init e820_mark_nvs_memory(void)
 	for (i = 0; i < e820_table->nr_entries; i++) {
 		struct e820_entry *entry = &e820_table->entries[i];
 
-		if (entry->type == E820_NVS)
+		if (entry->type == E820_TYPE_NVS)
 			acpi_nvs_register(entry->addr, entry->size);
 	}
 
@@ -747,7 +747,7 @@ u64 __init e820__memblock_alloc_reserved(u64 size, u64 align)
 
 	addr = __memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
 	if (addr) {
-		e820__range_update_firmware(addr, size, E820_RAM, E820_RESERVED);
+		e820__range_update_firmware(addr, size, E820_TYPE_RAM, E820_TYPE_RESERVED);
 		pr_info("e820: update e820_table_firmware for e820__memblock_alloc_reserved()\n");
 		e820__update_table_firmware();
 	}
@@ -805,12 +805,12 @@ static unsigned long __init e820_end_pfn(unsigned long limit_pfn, enum e820_type
 
 unsigned long __init e820_end_of_ram_pfn(void)
 {
-	return e820_end_pfn(MAX_ARCH_PFN, E820_RAM);
+	return e820_end_pfn(MAX_ARCH_PFN, E820_TYPE_RAM);
 }
 
 unsigned long __init e820_end_of_low_ram_pfn(void)
 {
-	return e820_end_pfn(1UL << (32 - PAGE_SHIFT), E820_RAM);
+	return e820_end_pfn(1UL << (32 - PAGE_SHIFT), E820_TYPE_RAM);
 }
 
 static void __init early_panic(char *msg)
@@ -846,7 +846,7 @@ static int __init parse_memopt(char *p)
 	if (mem_size == 0)
 		return -EINVAL;
 
-	e820__range_remove(mem_size, ULLONG_MAX - mem_size, E820_RAM, 1);
+	e820__range_remove(mem_size, ULLONG_MAX - mem_size, E820_TYPE_RAM, 1);
 
 	return 0;
 }
@@ -882,18 +882,18 @@ static int __init parse_memmap_one(char *p)
 	userdef = 1;
 	if (*p == '@') {
 		start_at = memparse(p+1, &p);
-		e820__range_add(start_at, mem_size, E820_RAM);
+		e820__range_add(start_at, mem_size, E820_TYPE_RAM);
 	} else if (*p == '#') {
 		start_at = memparse(p+1, &p);
-		e820__range_add(start_at, mem_size, E820_ACPI);
+		e820__range_add(start_at, mem_size, E820_TYPE_ACPI);
 	} else if (*p == '$') {
 		start_at = memparse(p+1, &p);
-		e820__range_add(start_at, mem_size, E820_RESERVED);
+		e820__range_add(start_at, mem_size, E820_TYPE_RESERVED);
 	} else if (*p == '!') {
 		start_at = memparse(p+1, &p);
-		e820__range_add(start_at, mem_size, E820_PRAM);
+		e820__range_add(start_at, mem_size, E820_TYPE_PRAM);
 	} else {
-		e820__range_remove(mem_size, ULLONG_MAX - mem_size, E820_RAM, 1);
+		e820__range_remove(mem_size, ULLONG_MAX - mem_size, E820_TYPE_RAM, 1);
 	}
 
 	return *p == '\0' ? 0 : -EINVAL;
@@ -926,7 +926,7 @@ void __init e820_reserve_setup_data(void)
 
 	while (pa_data) {
 		data = early_memremap(pa_data, sizeof(*data));
-		e820__range_update(pa_data, sizeof(*data)+data->len, E820_RAM, E820_RESERVED_KERN);
+		e820__range_update(pa_data, sizeof(*data)+data->len, E820_TYPE_RAM, E820_TYPE_RESERVED_KERN);
 		pa_data = data->next;
 		early_memunmap(data, sizeof(*data));
 	}
@@ -956,42 +956,42 @@ void __init e820__finish_early_params(void)
 static const char *__init e820_type_to_string(struct e820_entry *entry)
 {
 	switch (entry->type) {
-	case E820_RESERVED_KERN: /* Fall-through: */
-	case E820_RAM:		 return "System RAM";
-	case E820_ACPI:		 return "ACPI Tables";
-	case E820_NVS:		 return "ACPI Non-volatile Storage";
-	case E820_UNUSABLE:	 return "Unusable memory";
-	case E820_PRAM:		 return "Persistent Memory (legacy)";
-	case E820_PMEM:		 return "Persistent Memory";
-	default:		 return "Reserved";
+	case E820_TYPE_RESERVED_KERN:	/* Fall-through: */
+	case E820_TYPE_RAM:		return "System RAM";
+	case E820_TYPE_ACPI:		return "ACPI Tables";
+	case E820_TYPE_NVS:		return "ACPI Non-volatile Storage";
+	case E820_TYPE_UNUSABLE:	return "Unusable memory";
+	case E820_TYPE_PRAM:		return "Persistent Memory (legacy)";
+	case E820_TYPE_PMEM:		return "Persistent Memory";
+	default:			return "Reserved";
 	}
 }
 
 static unsigned long __init e820_type_to_iomem_type(struct e820_entry *entry)
 {
 	switch (entry->type) {
-	case E820_RESERVED_KERN: /* Fall-through: */
-	case E820_RAM:		 return IORESOURCE_SYSTEM_RAM;
-	case E820_ACPI:		 /* Fall-through: */
-	case E820_NVS:		 /* Fall-through: */
-	case E820_UNUSABLE:	 /* Fall-through: */
-	case E820_PRAM:		 /* Fall-through: */
-	case E820_PMEM:		 /* Fall-through: */
-	default:		 return IORESOURCE_MEM;
+	case E820_TYPE_RESERVED_KERN:	/* Fall-through: */
+	case E820_TYPE_RAM:		return IORESOURCE_SYSTEM_RAM;
+	case E820_TYPE_ACPI:		/* Fall-through: */
+	case E820_TYPE_NVS:		/* Fall-through: */
+	case E820_TYPE_UNUSABLE:	/* Fall-through: */
+	case E820_TYPE_PRAM:		/* Fall-through: */
+	case E820_TYPE_PMEM:		/* Fall-through: */
+	default:			return IORESOURCE_MEM;
 	}
 }
 
 static unsigned long __init e820_type_to_iores_desc(struct e820_entry *entry)
 {
 	switch (entry->type) {
-	case E820_ACPI:		 return IORES_DESC_ACPI_TABLES;
-	case E820_NVS:		 return IORES_DESC_ACPI_NV_STORAGE;
-	case E820_PMEM:		 return IORES_DESC_PERSISTENT_MEMORY;
-	case E820_PRAM:		 return IORES_DESC_PERSISTENT_MEMORY_LEGACY;
-	case E820_RESERVED_KERN: /* Fall-through: */
-	case E820_RAM:		 /* Fall-through: */
-	case E820_UNUSABLE:	 /* Fall-through: */
-	default:		 return IORES_DESC_NONE;
+	case E820_TYPE_ACPI:		return IORES_DESC_ACPI_TABLES;
+	case E820_TYPE_NVS:		return IORES_DESC_ACPI_NV_STORAGE;
+	case E820_TYPE_PMEM:		return IORES_DESC_PERSISTENT_MEMORY;
+	case E820_TYPE_PRAM:		return IORES_DESC_PERSISTENT_MEMORY_LEGACY;
+	case E820_TYPE_RESERVED_KERN:	/* Fall-through: */
+	case E820_TYPE_RAM:		/* Fall-through: */
+	case E820_TYPE_UNUSABLE:	/* Fall-through: */
+	default:			return IORES_DESC_NONE;
 	}
 }
 
@@ -1006,9 +1006,9 @@ static bool __init do_mark_busy(u32 type, struct resource *res)
 	 * for exclusive use of a driver
 	 */
 	switch (type) {
-	case E820_RESERVED:
-	case E820_PRAM:
-	case E820_PMEM:
+	case E820_TYPE_RESERVED:
+	case E820_TYPE_PRAM:
+	case E820_TYPE_PMEM:
 		return false;
 	default:
 		return true;
@@ -1102,7 +1102,7 @@ void __init e820_reserve_resources_late(void)
 		struct e820_entry *entry = &e820_table->entries[i];
 		u64 start, end;
 
-		if (entry->type != E820_RAM)
+		if (entry->type != E820_TYPE_RAM)
 			continue;
 
 		start = entry->addr + entry->size;
@@ -1148,8 +1148,8 @@ char *__init e820__memory_setup_default(void)
 		}
 
 		e820_table->nr_entries = 0;
-		e820__range_add(0, LOWMEMSIZE(), E820_RAM);
-		e820__range_add(HIGH_MEMORY, mem_size << 10, E820_RAM);
+		e820__range_add(0, LOWMEMSIZE(), E820_TYPE_RAM);
+		e820__range_add(HIGH_MEMORY, mem_size << 10, E820_TYPE_RAM);
 	}
 
 	return who;
@@ -1198,7 +1198,7 @@ void __init e820__memblock_setup(void)
 		if (end != (resource_size_t)end)
 			continue;
 
-		if (entry->type != E820_RAM && entry->type != E820_RESERVED_KERN)
+		if (entry->type != E820_TYPE_RAM && entry->type != E820_TYPE_RESERVED_KERN)
 			continue;
 
 		memblock_add(entry->addr, entry->size);

arch/x86/kernel/early-quirks.c

@@ -546,7 +546,7 @@ intel_graphics_stolen(int num, int slot, int func,
 	       &base, &end);
 
 	/* Mark this space as reserved */
-	e820__range_add(base, size, E820_RESERVED);
+	e820__range_add(base, size, E820_TYPE_RESERVED);
 	e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
 }