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Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 

Pull x86 boot updates from Ingo Molnar:
 "The biggest changes in this cycle were:

   - reworking of the e820 code: separate in-kernel and boot-ABI data
     structures and apply a whole range of cleanups to the kernel side.

     No change in functionality.

   - enable KASLR by default: it's used by all major distros and it's
     out of the experimental stage as well.

   - ... misc fixes and cleanups"

* 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (63 commits)
  x86/KASLR: Fix kexec kernel boot crash when KASLR randomization fails
  x86/reboot: Turn off KVM when halting a CPU
  x86/boot: Fix BSS corruption/overwrite bug in early x86 kernel startup
  x86: Enable KASLR by default
  boot/param: Move next_arg() function to lib/cmdline.c for later reuse
  x86/boot: Fix Sparse warning by including required header file
  x86/boot/64: Rename start_cpu()
  x86/xen: Update e820 table handling to the new core x86 E820 code
  x86/boot: Fix pr_debug() API braindamage
  xen, x86/headers: Add <linux/device.h> dependency to <asm/xen/page.h>
  x86/boot/e820: Simplify e820__update_table()
  x86/boot/e820: Separate the E820 ABI structures from the in-kernel structures
  x86/boot/e820: Fix and clean up e820_type switch() statements
  x86/boot/e820: Rename the remaining E820 APIs to the e820__*() prefix
  x86/boot/e820: Remove unnecessary #include's
  x86/boot/e820: Rename e820_mark_nosave_regions() to e820__register_nosave_regions()
  x86/boot/e820: Rename e820_reserve_resources*() to e820__reserve_resources*()
  x86/boot/e820: Use bool in query APIs
  x86/boot/e820: Document e820__reserve_setup_data()
  x86/boot/e820: Clean up __e820__update_table() et al
  ...
This commit is contained in:
Linus Torvalds 2017-05-01 20:51:12 -07:00
parent 3dee9fb2a4 da63b6b200
commit 16b76293c5
75 changed files with 1127 additions and 944 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Documentation/x86/zero-page.txt
View File

@ -27,7 +27,7 @@ Offset Proto Name Meaning
1C0/020 ALL efi_info EFI 32 information (struct efi_info)
1E0/004 ALL alk_mem_k Alternative mem check, in KB
1E4/004 ALL scratch Scratch field for the kernel setup code
1E8/001 ALL e820_entries Number of entries in e820_map (below)
1E8/001 ALL e820_entries Number of entries in e820_table (below)
1E9/001 ALL eddbuf_entries Number of entries in eddbuf (below)
1EA/001 ALL edd_mbr_sig_buf_entries Number of entries in edd_mbr_sig_buffer
(below)
@ -35,6 +35,6 @@ Offset Proto Name Meaning
1EC/001 ALL secure_boot Secure boot is enabled in the firmware
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)
2D0/A00 ALL e820_table E820 memory map table
(array of struct e820_entry)
D00/1EC ALL eddbuf EDD data (array of struct edd_info)

6
arch/x86/Kconfig
View File

@ -1973,7 +1973,7 @@ config RELOCATABLE
config RANDOMIZE_BASE
bool "Randomize the address of the kernel image (KASLR)"
depends on RELOCATABLE
default n
default y
---help---
In support of Kernel Address Space Layout Randomization (KASLR),
this randomizes the physical address at which the kernel image
@ -2003,7 +2003,7 @@ config RANDOMIZE_BASE
theoretically possible, but the implementations are further
limited due to memory layouts.
If unsure, say N.
If unsure, say Y.
# Relocation on x86 needs some additional build support
config X86_NEED_RELOCS
@ -2052,7 +2052,7 @@ config RANDOMIZE_MEMORY
configuration have in average 30,000 different possible virtual
addresses for each memory section.
If unsure, say N.
If unsure, say Y.
config RANDOMIZE_MEMORY_PHYSICAL_PADDING
hex "Physical memory mapping padding" if EXPERT

2
arch/x86/boot/boot.h
View File

@ -16,7 +16,7 @@
#ifndef BOOT_BOOT_H
#define BOOT_BOOT_H
#define STACK_SIZE 512 /* Minimum number of bytes for stack */
#define STACK_SIZE 1024 /* Minimum number of bytes for stack */
#ifndef __ASSEMBLY__

44
arch/x86/boot/compressed/eboot.c
View File

@ -9,7 +9,9 @@
#include <linux/efi.h>
#include <linux/pci.h>
#include <asm/efi.h>
#include <asm/e820/types.h>
#include <asm/setup.h>
#include <asm/desc.h>
@ -729,7 +731,7 @@ 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 boot_e820_entry);
e820ext->next = 0;
data = (struct setup_data *)(unsigned long)params->hdr.setup_data;
@ -746,9 +748,9 @@ 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 boot_e820_entry *entry = params->e820_table;
struct efi_info *efi = &params->efi_info;
struct e820entry *prev = NULL;
struct boot_e820_entry *prev = NULL;
u32 nr_entries;
u32 nr_desc;
int i;
@ -773,15 +775,15 @@ 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:
@ -789,15 +791,15 @@ static efi_status_t setup_e820(struct boot_params *params,
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:
@ -811,26 +813,26 @@ static efi_status_t setup_e820(struct boot_params *params,
continue;
}
if (nr_entries == ARRAY_SIZE(params->e820_map)) {
u32 need = (nr_desc - i) * sizeof(struct e820entry) +
if (nr_entries == ARRAY_SIZE(params->e820_table)) {
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;
entry = (struct boot_e820_entry *)e820ext->data;
}
e820_map->addr = d->phys_addr;
e820_map->size = d->num_pages << PAGE_SHIFT;
e820_map->type = e820_type;
prev = e820_map++;
entry->addr = d->phys_addr;
entry->size = d->num_pages << PAGE_SHIFT;
entry->type = e820_type;
prev = entry++;
nr_entries++;
}
if (nr_entries > ARRAY_SIZE(params->e820_map)) {
u32 nr_e820ext = nr_entries - ARRAY_SIZE(params->e820_map);
if (nr_entries > ARRAY_SIZE(params->e820_table)) {
u32 nr_e820ext = nr_entries - ARRAY_SIZE(params->e820_table);
add_e820ext(params, e820ext, nr_e820ext);
nr_entries -= nr_e820ext;
@ -848,7 +850,7 @@ 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);
@ -884,9 +886,9 @@ static efi_status_t exit_boot_func(efi_system_table_t *sys_table_arg,
if (first) {
nr_desc = *map->buff_size / *map->desc_size;
if (nr_desc > ARRAY_SIZE(p->boot_params->e820_map)) {
if (nr_desc > ARRAY_SIZE(p->boot_params->e820_table)) {
u32 nr_e820ext = nr_desc -
ARRAY_SIZE(p->boot_params->e820_map);
ARRAY_SIZE(p->boot_params->e820_table);
status = alloc_e820ext(nr_e820ext, &p->e820ext,
&p->e820ext_size);

17
arch/x86/boot/compressed/kaslr.c
View File

@ -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 boot_e820_entry *entry,
unsigned long minimum,
unsigned long image_size)
{
@ -435,7 +435,7 @@ static void process_e820_entry(struct e820entry *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. */
@ -518,7 +518,7 @@ static unsigned long find_random_phys_addr(unsigned long minimum,
/* Verify potential e820 positions, appending to slots list. */
for (i = 0; i < boot_params->e820_entries; i++) {
process_e820_entry(&boot_params->e820_map[i], minimum,
process_e820_entry(&boot_params->e820_table[i], minimum,
image_size);
if (slot_area_index == MAX_SLOT_AREA) {
debug_putstr("Aborted e820 scan (slot_areas full)!\n");
@ -597,10 +597,17 @@ void choose_random_location(unsigned long input,
add_identity_map(random_addr, output_size);
*output = random_addr;
}
/*
* This loads the identity mapping page table.
* This should only be done if a new physical address
* is found for the kernel, otherwise we should keep
* the old page table to make it be like the "nokaslr"
* case.
*/
finalize_identity_maps();
}
/* This actually loads the identity pagetable on x86_64. */
finalize_identity_maps();
/* Pick random virtual address starting from LOAD_PHYSICAL_ADDR. */
if (IS_ENABLED(CONFIG_X86_64))

1
arch/x86/boot/header.S
View File

@ -18,7 +18,6 @@
#include <asm/segment.h>
#include <generated/utsrelease.h>
#include <asm/boot.h>
#include <asm/e820.h>
#include <asm/page_types.h>
#include <asm/setup.h>
#include <asm/bootparam.h>

6
arch/x86/boot/memory.c
View File

@ -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 boot_e820_entry *desc = boot_params.e820_table;
static struct boot_e820_entry buf; /* static so it is zeroed */
initregs(&ireg);
ireg.ax = 0xe820;
@ -66,7 +66,7 @@ static int detect_memory_e820(void)
*desc++ = buf;
count++;
} while (ireg.ebx && count < ARRAY_SIZE(boot_params.e820_map));
} while (ireg.ebx && count < ARRAY_SIZE(boot_params.e820_table));
return boot_params.e820_entries = count;
}

2
arch/x86/configs/i386_defconfig
View File

@ -57,6 +57,8 @@ CONFIG_EFI=y
CONFIG_HZ_1000=y
CONFIG_KEXEC=y
CONFIG_CRASH_DUMP=y
CONFIG_RANDOMIZE_BASE=y
CONFIG_RANDOMIZE_MEMORY=y
# CONFIG_COMPAT_VDSO is not set
CONFIG_HIBERNATION=y
CONFIG_PM_DEBUG=y

2
arch/x86/configs/x86_64_defconfig
View File

@ -55,6 +55,8 @@ CONFIG_EFI=y
CONFIG_HZ_1000=y
CONFIG_KEXEC=y
CONFIG_CRASH_DUMP=y
CONFIG_RANDOMIZE_BASE=y
CONFIG_RANDOMIZE_MEMORY=y
# CONFIG_COMPAT_VDSO is not set
CONFIG_HIBERNATION=y
CONFIG_PM_DEBUG=y

2
arch/x86/include/asm/acpi.h
View File

@ -52,6 +52,8 @@ extern u8 acpi_sci_flags;
extern int acpi_sci_override_gsi;
void acpi_pic_sci_set_trigger(unsigned int, u16);
struct device;
extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
int trigger, int polarity);
extern void (*__acpi_unregister_gsi)(u32 gsi);

73
arch/x86/include/asm/e820.h
View File

@ -1,73 +0,0 @@
#ifndef _ASM_X86_E820_H
#define _ASM_X86_E820_H
/*
* E820_X_MAX is the maximum size of the extended E820 table. The extended
* table may contain up to 3 extra E820 entries per possible NUMA node, so we
* make room for 3 * MAX_NUMNODES possible entries, beyond the standard 128.
* Also note that E820_X_MAX *must* be defined before we include uapi/asm/e820.h.
*/
#include <linux/numa.h>
#define E820_X_MAX (E820MAX + 3 * MAX_NUMNODES)
#include <uapi/asm/e820.h>
#ifndef __ASSEMBLY__
/* see comment in arch/x86/kernel/e820.c */
extern struct e820map *e820;
extern struct e820map *e820_saved;
extern unsigned long pci_mem_start;
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 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);
extern void e820_setup_gap(void);
struct setup_data;
extern void parse_e820_ext(u64 phys_addr, u32 data_len);
#if defined(CONFIG_X86_64) || \
(defined(CONFIG_X86_32) && defined(CONFIG_HIBERNATION))
extern void e820_mark_nosave_regions(unsigned long limit_pfn);
#else
static inline void e820_mark_nosave_regions(unsigned long limit_pfn)
{
}
#endif
extern unsigned long e820_end_of_ram_pfn(void);
extern unsigned long e820_end_of_low_ram_pfn(void);
extern u64 early_reserve_e820(u64 sizet, u64 align);
void memblock_x86_fill(void);
void memblock_find_dma_reserve(void);
extern void finish_e820_parsing(void);
extern void e820_reserve_resources(void);
extern void e820_reserve_resources_late(void);
extern void setup_memory_map(void);
extern char *default_machine_specific_memory_setup(void);
extern void e820_reallocate_tables(void);
/*
* Returns true iff the specified range [s,e) is completely contained inside
* the ISA region.
*/
static inline bool is_ISA_range(u64 s, u64 e)
{
return s >= ISA_START_ADDRESS && e <= ISA_END_ADDRESS;
}
#endif /* __ASSEMBLY__ */
#include <linux/ioport.h>
#define HIGH_MEMORY (1024*1024)
#endif /* _ASM_X86_E820_H */

50
arch/x86/include/asm/e820/api.h Normal file
View File

@ -0,0 +1,50 @@
#ifndef _ASM_E820_API_H
#define _ASM_E820_API_H
#include <asm/e820/types.h>
extern struct e820_table *e820_table;
extern struct e820_table *e820_table_firmware;
extern unsigned long pci_mem_start;
extern bool e820__mapped_any(u64 start, u64 end, enum e820_type type);
extern bool e820__mapped_all(u64 start, u64 end, enum e820_type type);
extern void e820__range_add (u64 start, u64 size, enum e820_type type);
extern u64 e820__range_update(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type);
extern u64 e820__range_remove(u64 start, u64 size, enum e820_type old_type, bool check_type);
extern void e820__print_table(char *who);
extern int e820__update_table(struct e820_table *table);
extern void e820__update_table_print(void);
extern unsigned long e820__end_of_ram_pfn(void);
extern unsigned long e820__end_of_low_ram_pfn(void);
extern u64 e820__memblock_alloc_reserved(u64 size, u64 align);
extern void e820__memblock_setup(void);
extern void e820__reserve_setup_data(void);
extern void e820__finish_early_params(void);
extern void e820__reserve_resources(void);
extern void e820__reserve_resources_late(void);
extern void e820__memory_setup(void);
extern void e820__memory_setup_extended(u64 phys_addr, u32 data_len);
extern char *e820__memory_setup_default(void);
extern void e820__setup_pci_gap(void);
extern void e820__reallocate_tables(void);
extern void e820__register_nosave_regions(unsigned long limit_pfn);
/*
* Returns true iff the specified range [start,end) is completely contained inside
* the ISA region.
*/
static inline bool is_ISA_range(u64 start, u64 end)
{
return start >= ISA_START_ADDRESS && end <= ISA_END_ADDRESS;
}
#endif /* _ASM_E820_API_H */

104
arch/x86/include/asm/e820/types.h Normal file
View File

@ -0,0 +1,104 @@
#ifndef _ASM_E820_TYPES_H
#define _ASM_E820_TYPES_H
#include <uapi/asm/bootparam.h>
/*
* These are the E820 types known to the kernel:
*/
enum e820_type {
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
* NVDIMM regions that persist over a reboot.
*
* The kernel will ignore their special capabilities
* unless the CONFIG_X86_PMEM_LEGACY=y option is set.
*
* ( Note that older platforms also used 6 for the same
* type of memory, but newer versions switched to 12 as
* 6 was assigned differently. Some time they will learn... )
*/
E820_TYPE_PRAM = 12,
/*
* Reserved RAM used by the kernel itself if
* CONFIG_INTEL_TXT=y is enabled, memory of this type
* will be included in the S3 integrity calculation
* and so should not include any memory that the BIOS
* might alter over the S3 transition:
*/
E820_TYPE_RESERVED_KERN = 128,
};
/*
* A single E820 map entry, describing a memory range of [addr...addr+size-1],
* of 'type' memory type:
*
* (We pack it because there can be thousands of them on large systems.)
*/
struct e820_entry {
u64 addr;
u64 size;
enum e820_type type;
} __attribute__((packed));
/*
* The legacy E820 BIOS limits us to 128 (E820_MAX_ENTRIES_ZEROPAGE) nodes
* due to the constrained space in the zeropage.
*
* On large systems we can easily have thousands of nodes with RAM,
* which cannot be fit into so few entries - so we have a mechanism
* to extend the e820 table size at build-time, via the E820_MAX_ENTRIES
* define below.
*
* ( Those extra entries are enumerated via the EFI memory map, not
* via the legacy zeropage mechanism. )
*
* Size our internal memory map tables to have room for these additional
* entries, based on a heuristic calculation: up to three entries per
* NUMA node, plus E820_MAX_ENTRIES_ZEROPAGE for some extra space.
*
* This allows for bootstrap/firmware quirks such as possible duplicate
* E820 entries that might need room in the same arrays, prior to the
* call to e820__update_table() to remove duplicates. The allowance
* of three memory map entries per node is "enough" entries for
* the initial hardware platform motivating this mechanism to make
* use of additional EFI map entries. Future platforms may want
* to allow more than three entries per node or otherwise refine
* this size.
*/
#include <linux/numa.h>
#define E820_MAX_ENTRIES (E820_MAX_ENTRIES_ZEROPAGE + 3*MAX_NUMNODES)
/*
* The whole array of E820 entries:
*/
struct e820_table {
__u32 nr_entries;
struct e820_entry entries[E820_MAX_ENTRIES];
};
/*
* Various well-known legacy memory ranges in physical memory:
*/
#define ISA_START_ADDRESS 0x000a0000
#define ISA_END_ADDRESS 0x00100000
#define BIOS_BEGIN 0x000a0000
#define BIOS_END 0x00100000
#define HIGH_MEMORY 0x00100000
#define BIOS_ROM_BASE 0xffe00000
#define BIOS_ROM_END 0xffffffff
#endif /* _ASM_E820_TYPES_H */

4
arch/x86/include/asm/gart.h
View File

@ -1,7 +1,7 @@
#ifndef _ASM_X86_GART_H
#define _ASM_X86_GART_H
#include <asm/e820.h>
#include <asm/e820/api.h>
extern void set_up_gart_resume(u32, u32);
@ -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_any_mapped(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;
}

4
arch/x86/include/asm/mpspec.h
View File

@ -64,7 +64,7 @@ static inline void find_smp_config(void)
}
#ifdef CONFIG_X86_MPPARSE
extern void early_reserve_e820_mpc_new(void);
extern void e820__memblock_alloc_reserved_mpc_new(void);
extern int enable_update_mptable;
extern int default_mpc_apic_id(struct mpc_cpu *m);
extern void default_smp_read_mpc_oem(struct mpc_table *mpc);
@ -76,7 +76,7 @@ extern void default_mpc_oem_bus_info(struct mpc_bus *m, char *str);
extern void default_find_smp_config(void);
extern void default_get_smp_config(unsigned int early);
#else
static inline void early_reserve_e820_mpc_new(void) { }
static inline void e820__memblock_alloc_reserved_mpc_new(void) { }
#define enable_update_mptable 0
#define default_mpc_apic_id NULL
#define default_smp_read_mpc_oem NULL

2
arch/x86/include/asm/pci_x86.h
View File

@ -4,6 +4,8 @@
* (c) 1999 Martin Mares <mj@ucw.cz>
*/
#include <linux/ioport.h>
#undef DEBUG
#ifdef DEBUG

3
arch/x86/include/asm/pgtable.h
View File

@ -2,8 +2,6 @@
#define _ASM_X86_PGTABLE_H
#include <asm/page.h>
#include <asm/e820.h>
#include <asm/pgtable_types.h>
/*
@ -845,6 +843,7 @@ static inline int pgd_none(pgd_t pgd)
extern int direct_gbpages;
void init_mem_mapping(void);
void early_alloc_pgt_buf(void);
extern void memblock_find_dma_reserve(void);
#ifdef CONFIG_X86_64
/* Realmode trampoline initialization. */

1
arch/x86/include/asm/xen/page.h
View File

@ -6,6 +6,7 @@
#include <linux/spinlock.h>
#include <linux/pfn.h>
#include <linux/mm.h>
#include <linux/device.h>
#include <linux/uaccess.h>
#include <asm/page.h>

18
arch/x86/include/uapi/asm/bootparam.h
View File

@ -34,7 +34,6 @@
#include <linux/screen_info.h>
#include <linux/apm_bios.h>
#include <linux/edd.h>
#include <asm/e820.h>
#include <asm/ist.h>
#include <video/edid.h>
@ -111,6 +110,21 @@ struct efi_info {
__u32 efi_memmap_hi;
};
/*
* This is the maximum number of entries in struct boot_params::e820_table
* (the zeropage), which is part of the x86 boot protocol ABI:
*/
#define E820_MAX_ENTRIES_ZEROPAGE 128
/*
* The E820 memory region entry of the boot protocol ABI:
*/
struct boot_e820_entry {
__u64 addr;
__u64 size;
__u32 type;
} __attribute__((packed));
/* The so-called "zeropage" */
struct boot_params {
struct screen_info screen_info; /* 0x000 */
@ -153,7 +167,7 @@ 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 boot_e820_entry e820_table[E820_MAX_ENTRIES_ZEROPAGE]; /* 0x2d0 */
__u8 _pad8[48]; /* 0xcd0 */
struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */
__u8 _pad9[276]; /* 0xeec */

5
arch/x86/kernel/acpi/boot.c
View File

@ -37,6 +37,7 @@
#include <linux/pci.h>
#include <linux/efi-bgrt.h>
#include <asm/e820/api.h>
#include <asm/irqdomain.h>
#include <asm/pci_x86.h>
#include <asm/pgtable.h>
@ -1723,6 +1724,6 @@ int __acpi_release_global_lock(unsigned int *lock)
void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
{
e820_add_region(addr, size, E820_ACPI);
update_e820();
e820__range_add(addr, size, E820_TYPE_ACPI);
e820__update_table_print();
}

10
arch/x86/kernel/aperture_64.c
View File

@ -21,7 +21,7 @@
#include <linux/pci.h>
#include <linux/bitops.h>
#include <linux/suspend.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/io.h>
#include <asm/iommu.h>
#include <asm/gart.h>
@ -306,13 +306,13 @@ void __init early_gart_iommu_check(void)
fix = 1;
if (gart_fix_e820 && !fix && aper_enabled) {
if (e820_any_mapped(aper_base, aper_base + aper_size,
E820_RAM)) {
if (e820__mapped_any(aper_base, aper_base + aper_size,
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_add_region(aper_base, aper_size, E820_RESERVED);
update_e820();
e820__range_add(aper_base, aper_size, E820_TYPE_RESERVED);
e820__update_table_print();
}
}

2
arch/x86/kernel/apic/apic.c
View File

@ -2631,7 +2631,7 @@ static int __init lapic_insert_resource(void)
}
/*
* need call insert after e820_reserve_resources()
* need call insert after e820__reserve_resources()
* that is using request_resource
*/
late_initcall(lapic_insert_resource);

2
arch/x86/kernel/apic/apic_noop.c
View File

@ -26,7 +26,7 @@
#include <linux/interrupt.h>
#include <asm/acpi.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
static void noop_init_apic_ldr(void) { }
static void noop_send_IPI(int cpu, int vector) { }

2
arch/x86/kernel/apic/probe_32.c
View File

@ -25,7 +25,7 @@
#include <linux/interrupt.h>
#include <asm/acpi.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#ifdef CONFIG_HOTPLUG_CPU
#define DEFAULT_SEND_IPI (1)

1
arch/x86/kernel/apic/x2apic_uv_x.c
View File

@ -34,6 +34,7 @@
#include <asm/uv/bios.h>
#include <asm/uv/uv.h>
#include <asm/apic.h>
#include <asm/e820/api.h>
#include <asm/ipi.h>
#include <asm/smp.h>
#include <asm/x86_init.h>

2
arch/x86/kernel/cpu/centaur.c
View File

@ -3,7 +3,7 @@
#include <linux/sched/clock.h>
#include <asm/cpufeature.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/mtrr.h>
#include <asm/msr.h>

6
arch/x86/kernel/cpu/mtrr/cleanup.c
View File

@ -27,7 +27,7 @@
#include <linux/range.h>
#include <asm/processor.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/mtrr.h>
#include <asm/msr.h>
@ -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_update_range(trim_start, trim_size, E820_RAM, E820_RESERVED);
return e820__range_update(trim_start, trim_size, E820_TYPE_RAM, E820_TYPE_RESERVED);
}
/**
@ -978,7 +978,7 @@ int __init mtrr_trim_uncached_memory(unsigned long end_pfn)
WARN_ON(1);
pr_info("update e820 for mtrr\n");
update_e820();
e820__update_table_print();
return 1;
}

2
arch/x86/kernel/cpu/mtrr/main.c
View File

@ -48,7 +48,7 @@
#include <linux/syscore_ops.h>
#include <asm/cpufeature.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/mtrr.h>
#include <asm/msr.h>
#include <asm/pat.h>

23
arch/x86/kernel/crash.c
View File

@ -29,6 +29,7 @@
#include <asm/nmi.h>
#include <asm/hw_irq.h>
#include <asm/apic.h>
#include <asm/e820/types.h>
#include <asm/io_apic.h>
#include <asm/hpet.h>
#include <linux/kdebug.h>
@ -503,16 +504,16 @@ 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;
nr_e820_entries = params->e820_entries;
if (nr_e820_entries >= E820MAX)
if (nr_e820_entries >= E820_MAX_ENTRIES_ZEROPAGE)
return 1;
memcpy(&params->e820_map[nr_e820_entries], entry,
sizeof(struct e820entry));
memcpy(&params->e820_table[nr_e820_entries], entry,
sizeof(struct e820_entry));
params->e820_entries++;
return 0;
}
@ -521,7 +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;
@ -560,7 +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;
@ -574,17 +575,17 @@ 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);
@ -592,7 +593,7 @@ int crash_setup_memmap_entries(struct kimage *image, struct boot_params *params)
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);
}
@ -609,7 +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);
}

1054
arch/x86/kernel/e820.c
View File

File diff suppressed because it is too large Load Diff

4
arch/x86/kernel/early-quirks.c
View File

@ -546,8 +546,8 @@ intel_graphics_stolen(int num, int slot, int func,
&base, &end);
/* Mark this space as reserved */
e820_add_region(base, size, E820_RESERVED);
sanitize_e820_map(e820->map, ARRAY_SIZE(e820->map), &e820->nr_map);
e820__range_add(base, size, E820_TYPE_RESERVED);
e820__update_table(e820_table);
}
static void __init intel_graphics_quirks(int num, int slot, int func)

2
arch/x86/kernel/head32.c
View File

@ -12,7 +12,7 @@
#include <asm/setup.h>
#include <asm/sections.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/page.h>
#include <asm/apic.h>
#include <asm/io_apic.h>

2
arch/x86/kernel/head64.c
View File

@ -24,7 +24,7 @@
#include <asm/tlbflush.h>
#include <asm/sections.h>
#include <asm/kdebug.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/bios_ebda.h>
#include <asm/bootparam_utils.h>
#include <asm/microcode.h>

10
arch/x86/kernel/head_64.S
View File

@ -269,10 +269,8 @@ ENTRY(secondary_startup_64)
/* rsi is pointer to real mode structure with interesting info.
pass it to C */
movq %rsi, %rdi
jmp start_cpu
ENDPROC(secondary_startup_64)
ENTRY(start_cpu)
.Ljump_to_C_code:
/*
* Jump to run C code and to be on a real kernel address.
* Since we are running on identity-mapped space we have to jump
@ -305,7 +303,7 @@ ENTRY(start_cpu)
pushq %rax # target address in negative space
lretq
.Lafter_lret:
ENDPROC(start_cpu)
ENDPROC(secondary_startup_64)
#include "verify_cpu.S"
@ -313,11 +311,11 @@ ENDPROC(start_cpu)
/*
* Boot CPU0 entry point. It's called from play_dead(). Everything has been set
* up already except stack. We just set up stack here. Then call
* start_secondary() via start_cpu().
* start_secondary() via .Ljump_to_C_code.
*/
ENTRY(start_cpu0)
movq initial_stack(%rip), %rsp
jmp start_cpu
jmp .Ljump_to_C_code
ENDPROC(start_cpu0)
#endif

18
arch/x86/kernel/kexec-bzimage64.c
View File

@ -25,6 +25,7 @@
#include <asm/setup.h>
#include <asm/crash.h>
#include <asm/efi.h>
#include <asm/e820/api.h>
#include <asm/kexec-bzimage64.h>
#define MAX_ELFCOREHDR_STR_LEN 30 /* elfcorehdr=0x<64bit-value> */
@ -99,15 +100,14 @@ static int setup_e820_entries(struct boot_params *params)
{
unsigned int nr_e820_entries;
nr_e820_entries = e820_saved->nr_map;
nr_e820_entries = e820_table_firmware->nr_entries;
/* TODO: Pass entries more than E820MAX in bootparams setup data */
if (nr_e820_entries > E820MAX)
nr_e820_entries = E820MAX;
/* TODO: Pass entries more than E820_MAX_ENTRIES_ZEROPAGE in bootparams setup data */
if (nr_e820_entries > E820_MAX_ENTRIES_ZEROPAGE)
nr_e820_entries = E820_MAX_ENTRIES_ZEROPAGE;
params->e820_entries = nr_e820_entries;
memcpy(&params->e820_map, &e820_saved->map,
nr_e820_entries * sizeof(struct e820entry));
memcpy(&params->e820_table, &e820_table_firmware->entries, nr_e820_entries*sizeof(struct e820_entry));
return 0;
}
@ -232,10 +232,10 @@ setup_boot_parameters(struct kimage *image, struct boot_params *params,
nr_e820_entries = params->e820_entries;
for (i = 0; i < nr_e820_entries; i++) {
if (params->e820_map[i].type != E820_RAM)
if (params->e820_table[i].type != E820_TYPE_RAM)
continue;
start = params->e820_map[i].addr;
end = params->e820_map[i].addr + params->e820_map[i].size - 1;
start = params->e820_table[i].addr;
end = params->e820_table[i].addr + params->e820_table[i].size - 1;
if ((start <= 0x100000) && end > 0x100000) {
mem_k = (end >> 10) - (0x100000 >> 10);

6
arch/x86/kernel/mpparse.c
View File

@ -26,7 +26,7 @@
#include <asm/io_apic.h>
#include <asm/proto.h>
#include <asm/bios_ebda.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/setup.h>
#include <asm/smp.h>
@ -826,10 +826,10 @@ static int __init parse_alloc_mptable_opt(char *p)
}
early_param("alloc_mptable", parse_alloc_mptable_opt);
void __init early_reserve_e820_mpc_new(void)
void __init e820__memblock_alloc_reserved_mpc_new(void)
{
if (enable_update_mptable && alloc_mptable)
mpc_new_phys = early_reserve_e820(mpc_new_length, 4);
mpc_new_phys = e820__memblock_alloc_reserved(mpc_new_length, 4);
}
static int __init update_mp_table(void)

2
arch/x86/kernel/probe_roms.c
View File

@ -14,7 +14,7 @@
#include <asm/probe_roms.h>
#include <asm/pci-direct.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/mmzone.h>
#include <asm/setup.h>
#include <asm/sections.h>

8
arch/x86/kernel/resource.c
View File

@ -1,5 +1,5 @@
#include <linux/ioport.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
static void resource_clip(struct resource *res, resource_size_t start,
resource_size_t end)
@ -25,10 +25,10 @@ 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];
for (i = 0; i < e820_table->nr_entries; i++) {
entry = &e820_table->entries[i];
resource_clip(avail, entry->addr,
entry->addr + entry->size - 1);

78
arch/x86/kernel/setup.c
View File

@ -75,7 +75,7 @@
#include <asm/mtrr.h>
#include <asm/apic.h>
#include <asm/realmode.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/mpspec.h>
#include <asm/setup.h>
#include <asm/efi.h>
@ -119,7 +119,7 @@
* max_low_pfn_mapped: highest direct mapped pfn under 4GB
* max_pfn_mapped: highest direct mapped pfn over 4GB
*
* The direct mapping only covers E820_RAM regions, so the ranges and gaps are
* The direct mapping only covers E820_TYPE_RAM regions, so the ranges and gaps are
* represented by pfn_mapped
*/
unsigned long max_low_pfn_mapped;
@ -426,7 +426,7 @@ static void __init parse_setup_data(void)
switch (data_type) {
case SETUP_E820_EXT:
parse_e820_ext(pa_data, data_len);
e820__memory_setup_extended(pa_data, data_len);
break;
case SETUP_DTB:
add_dtb(pa_data);
@ -441,29 +441,6 @@ static void __init parse_setup_data(void)
}
}
static void __init e820_reserve_setup_data(void)
{
struct setup_data *data;
u64 pa_data;
pa_data = boot_params.hdr.setup_data;
if (!pa_data)
return;
while (pa_data) {
data = early_memremap(pa_data, sizeof(*data));
e820_update_range(pa_data, sizeof(*data)+data->len,
E820_RAM, E820_RESERVED_KERN);
pa_data = data->next;
early_memunmap(data, sizeof(*data));
}
sanitize_e820_map(e820->map, ARRAY_SIZE(e820->map), &e820->nr_map);
memcpy(e820_saved, e820, sizeof(struct e820map));
printk(KERN_INFO "extended physical RAM map:\n");
e820_print_map("reserve setup_data");
}
static void __init memblock_x86_reserve_range_setup_data(void)
{
struct setup_data *data;
@ -756,16 +733,16 @@ static void __init trim_bios_range(void)
* since some BIOSes are known to corrupt low memory. See the
* Kconfig help text for X86_RESERVE_LOW.
*/
e820_update_range(0, PAGE_SIZE, E820_RAM, E820_RESERVED);
e820__range_update(0, PAGE_SIZE, E820_TYPE_RAM, E820_TYPE_RESERVED);
/*
* special case: Some BIOSen report the PC BIOS
* area (640->1Mb) as ram even though it is not.
* take them out.
*/
e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1);
e820__range_remove(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_TYPE_RAM, 1);
sanitize_e820_map(e820->map, ARRAY_SIZE(e820->map), &e820->nr_map);
e820__update_table(e820_table);
}
/* called before trim_bios_range() to spare extra sanitize */
@ -775,18 +752,18 @@ static void __init e820_add_kernel_range(void)
u64 size = __pa_symbol(_end) - start;
/*
* Complain if .text .data and .bss are not marked as E820_RAM and
* Complain if .text .data and .bss are not marked as E820_TYPE_RAM and
* attempt to fix it by adding the range. We may have a confused BIOS,
* or the user may have used memmap=exactmap or memmap=xxM$yyM to
* exclude kernel range. If we really are running on top non-RAM,
* we will crash later anyways.
*/
if (e820_all_mapped(start, start + size, E820_RAM))
if (e820__mapped_all(start, start + size, E820_TYPE_RAM))
return;
pr_warn(".text .data .bss are not marked as E820_RAM!\n");
e820_remove_range(start, size, E820_RAM, 0);
e820_add_region(start, size, E820_RAM);
pr_warn(".text .data .bss are not marked as E820_TYPE_RAM!\n");
e820__range_remove(start, size, E820_TYPE_RAM, 0);
e820__range_add(start, size, E820_TYPE_RAM);
}
static unsigned reserve_low = CONFIG_X86_RESERVE_LOW << 10;
@ -939,7 +916,7 @@ void __init setup_arch(char **cmdline_p)
x86_init.oem.arch_setup();
iomem_resource.end = (1ULL << boot_cpu_data.x86_phys_bits) - 1;
setup_memory_map();
e820__memory_setup();
parse_setup_data();
copy_edd();
@ -1028,9 +1005,8 @@ void __init setup_arch(char **cmdline_p)
early_dump_pci_devices();
#endif
/* update the e820_saved too */
e820_reserve_setup_data();
finish_e820_parsing();
e820__reserve_setup_data();
e820__finish_early_params();
if (efi_enabled(EFI_BOOT))
efi_init();
@ -1056,11 +1032,11 @@ void __init setup_arch(char **cmdline_p)
trim_bios_range();
#ifdef CONFIG_X86_32
if (ppro_with_ram_bug()) {
e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM,
E820_RESERVED);
sanitize_e820_map(e820->map, ARRAY_SIZE(e820->map), &e820->nr_map);
e820__range_update(0x70000000ULL, 0x40000ULL, E820_TYPE_RAM,
E820_TYPE_RESERVED);
e820__update_table(e820_table);
printk(KERN_INFO "fixed physical RAM map:\n");
e820_print_map("bad_ppro");
e820__print_table("bad_ppro");
}
#else
early_gart_iommu_check();
@ -1070,12 +1046,12 @@ void __init setup_arch(char **cmdline_p)
* partially used pages are not usable - thus
* we are rounding upwards:
*/
max_pfn = e820_end_of_ram_pfn();
max_pfn = e820__end_of_ram_pfn();
/* update e820 for memory not covered by WB MTRRs */
mtrr_bp_init();
if (mtrr_trim_uncached_memory(max_pfn))
max_pfn = e820_end_of_ram_pfn();
max_pfn = e820__end_of_ram_pfn();
max_possible_pfn = max_pfn;
@ -1094,7 +1070,7 @@ void __init setup_arch(char **cmdline_p)
/* How many end-of-memory variables you have, grandma! */
/* need this before calling reserve_initrd */
if (max_pfn > (1UL<<(32 - PAGE_SHIFT)))
max_low_pfn = e820_end_of_low_ram_pfn();
max_low_pfn = e820__end_of_low_ram_pfn();
else
max_low_pfn = max_pfn;
@ -1111,7 +1087,7 @@ void __init setup_arch(char **cmdline_p)
early_alloc_pgt_buf();
/*
* Need to conclude brk, before memblock_x86_fill()
* Need to conclude brk, before e820__memblock_setup()
* it could use memblock_find_in_range, could overlap with
* brk area.
*/
@ -1120,7 +1096,7 @@ void __init setup_arch(char **cmdline_p)
cleanup_highmap();
memblock_set_current_limit(ISA_END_ADDRESS);
memblock_x86_fill();
e820__memblock_setup();
reserve_bios_regions();
@ -1137,7 +1113,7 @@ void __init setup_arch(char **cmdline_p)
}
/* preallocate 4k for mptable mpc */
early_reserve_e820_mpc_new();
e820__memblock_alloc_reserved_mpc_new();
#ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION
setup_bios_corruption_check();
@ -1275,12 +1251,12 @@ void __init setup_arch(char **cmdline_p)
kvm_guest_init();
e820_reserve_resources();
e820_mark_nosave_regions(max_low_pfn);
e820__reserve_resources();
e820__register_nosave_regions(max_low_pfn);
x86_init.resources.reserve_resources();
e820_setup_gap();
e820__setup_pci_gap();
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)

3
arch/x86/kernel/smp.c
View File

@ -33,6 +33,7 @@
#include <asm/mce.h>
#include <asm/trace/irq_vectors.h>
#include <asm/kexec.h>
#include <asm/virtext.h>
/*
* Some notes on x86 processor bugs affecting SMP operation:
@ -162,6 +163,7 @@ static int smp_stop_nmi_callback(unsigned int val, struct pt_regs *regs)
if (raw_smp_processor_id() == atomic_read(&stopping_cpu))
return NMI_HANDLED;
cpu_emergency_vmxoff();
stop_this_cpu(NULL);
return NMI_HANDLED;
@ -174,6 +176,7 @@ static int smp_stop_nmi_callback(unsigned int val, struct pt_regs *regs)
asmlinkage __visible void smp_reboot_interrupt(void)
{
ipi_entering_ack_irq();
cpu_emergency_vmxoff();
stop_this_cpu(NULL);
irq_exit();
}

16
arch/x86/kernel/tboot.c
View File

@ -42,7 +42,7 @@
#include <asm/fixmap.h>
#include <asm/proto.h>
#include <asm/setup.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/io.h>
#include "../realmode/rm/wakeup.h"
@ -68,9 +68,9 @@ void __init tboot_probe(void)
* also verify that it is mapped as we expect it before calling
* set_fixmap(), to reduce chance of garbage value causing crash
*/
if (!e820_any_mapped(boot_params.tboot_addr,
boot_params.tboot_addr, E820_RESERVED)) {
pr_warning("non-0 tboot_addr but it is not of type E820_RESERVED\n");
if (!e820__mapped_any(boot_params.tboot_addr,
boot_params.tboot_addr, E820_TYPE_RESERVED)) {
pr_warning("non-0 tboot_addr but it is not of type E820_TYPE_RESERVED\n");
return;
}
@ -188,12 +188,12 @@ static int tboot_setup_sleep(void)
tboot->num_mac_regions = 0;
for (i = 0; i < e820->nr_map; i++) {
if ((e820->map[i].type != E820_RAM)
&& (e820->map[i].type != E820_RESERVED_KERN))
for (i = 0; i < e820_table->nr_entries; i++) {
if ((e820_table->entries[i].type != E820_TYPE_RAM)
&& (e820_table->entries[i].type != E820_TYPE_RESERVED_KERN))
continue;
add_mac_region(e820->map[i].addr, e820->map[i].size);
add_mac_region(e820_table->entries[i].addr, e820_table->entries[i].size);
}
tboot->acpi_sinfo.kernel_s3_resume_vector =

4
arch/x86/kernel/x86_init.c
View File

@ -14,7 +14,7 @@
#include <asm/mpspec.h>
#include <asm/setup.h>
#include <asm/apic.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/time.h>
#include <asm/irq.h>
#include <asm/io_apic.h>
@ -38,7 +38,7 @@ struct x86_init_ops x86_init __initdata = {
.resources = {
.probe_roms = probe_roms,
.reserve_resources = reserve_standard_io_resources,
.memory_setup = default_machine_specific_memory_setup,
.memory_setup = e820__memory_setup_default,
},
.mpparse = {

8
arch/x86/lguest/boot.c
View File

@ -67,7 +67,7 @@
#include <asm/pgtable.h>
#include <asm/desc.h>
#include <asm/setup.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/mce.h>
#include <asm/io.h>
#include <asm/fpu/api.h>
@ -1180,9 +1180,9 @@ static __init char *lguest_memory_setup(void)
* The Linux bootloader header contains an "e820" memory map: the
* Launcher populated the first entry with our memory limit.
*/
e820_add_region(boot_params.e820_map[0].addr,
boot_params.e820_map[0].size,
boot_params.e820_map[0].type);
e820__range_add(boot_params.e820_table[0].addr,
boot_params.e820_table[0].size,
boot_params.e820_table[0].type);
/* This string is for the boot messages. */
return "LGUEST";

2
arch/x86/lib/kaslr.c
View File

@ -8,7 +8,7 @@
#include <asm/kaslr.h>
#include <asm/msr.h>
#include <asm/archrandom.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/io.h>
/*

2
arch/x86/mm/amdtopology.c
View File

@ -19,7 +19,7 @@
#include <asm/types.h>
#include <asm/mmzone.h>
#include <asm/proto.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/pci-direct.h>
#include <asm/numa.h>
#include <asm/mpspec.h>

59
arch/x86/mm/init.c
View File

@ -6,7 +6,7 @@
#include <linux/bootmem.h> /* for max_low_pfn */
#include <asm/cacheflush.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/init.h>
#include <asm/page.h>
#include <asm/page_types.h>
@ -373,14 +373,14 @@ static int __meminit split_mem_range(struct map_range *mr, int nr_range,
return nr_range;
}
struct range pfn_mapped[E820_X_MAX];
struct range pfn_mapped[E820_MAX_ENTRIES];
int nr_pfn_mapped;
static void add_pfn_range_mapped(unsigned long start_pfn, unsigned long end_pfn)
{
nr_pfn_mapped = add_range_with_merge(pfn_mapped, E820_X_MAX,
nr_pfn_mapped = add_range_with_merge(pfn_mapped, E820_MAX_ENTRIES,
nr_pfn_mapped, start_pfn, end_pfn);
nr_pfn_mapped = clean_sort_range(pfn_mapped, E820_X_MAX);
nr_pfn_mapped = clean_sort_range(pfn_mapped, E820_MAX_ENTRIES);
max_pfn_mapped = max(max_pfn_mapped, end_pfn);
@ -430,7 +430,7 @@ unsigned long __ref init_memory_mapping(unsigned long start,
/*
* We need to iterate through the E820 memory map and create direct mappings
* for only E820_RAM and E820_KERN_RESERVED regions. We cannot simply
* for only E820_TYPE_RAM and E820_KERN_RESERVED regions. We cannot simply
* create direct mappings for all pfns from [0 to max_low_pfn) and
* [4GB to max_pfn) because of possible memory holes in high addresses
* that cannot be marked as UC by fixed/variable range MTRRs.
@ -720,7 +720,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
void __ref free_initmem(void)
{
e820_reallocate_tables();
e820__reallocate_tables();
free_init_pages("unused kernel",
(unsigned long)(&__init_begin),
@ -743,6 +743,53 @@ void __init free_initrd_mem(unsigned long start, unsigned long end)
}
#endif
/*
* Calculate the precise size of the DMA zone (first 16 MB of RAM),
* and pass it to the MM layer - to help it set zone watermarks more
* accurately.
*
* Done on 64-bit systems only for the time being, although 32-bit systems
* might benefit from this as well.
*/
void __init memblock_find_dma_reserve(void)
{
#ifdef CONFIG_X86_64
u64 nr_pages = 0, nr_free_pages = 0;
unsigned long start_pfn, end_pfn;
phys_addr_t start_addr, end_addr;
int i;
u64 u;
/*
* Iterate over all memory ranges (free and reserved ones alike),
* to calculate the total number of pages in the first 16 MB of RAM:
*/
nr_pages = 0;
for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, NULL) {
start_pfn = min(start_pfn, MAX_DMA_PFN);
end_pfn = min(end_pfn, MAX_DMA_PFN);
nr_pages += end_pfn - start_pfn;
}
/*
* Iterate over free memory ranges to calculate the number of free
* pages in the DMA zone, while not counting potential partial
* pages at the beginning or the end of the range:
*/
nr_free_pages = 0;
for_each_free_mem_range(u, NUMA_NO_NODE, MEMBLOCK_NONE, &start_addr, &end_addr, NULL) {
start_pfn = min_t(unsigned long, PFN_UP(start_addr), MAX_DMA_PFN);
end_pfn = min_t(unsigned long, PFN_DOWN(end_addr), MAX_DMA_PFN);
if (start_pfn < end_pfn)
nr_free_pages += end_pfn - start_pfn;
}
set_dma_reserve(nr_pages - nr_free_pages);
#endif
}
void __init zone_sizes_init(void)
{
unsigned long max_zone_pfns[MAX_NR_ZONES];

2
arch/x86/mm/init_32.c
View File

@ -38,7 +38,7 @@
#include <asm/pgtable.h>
#include <asm/dma.h>
#include <asm/fixmap.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/apic.h>
#include <asm/bugs.h>
#include <asm/tlb.h>

26
arch/x86/mm/init_64.c
View File

@ -41,7 +41,7 @@
#include <asm/pgalloc.h>
#include <asm/dma.h>
#include <asm/fixmap.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/apic.h>
#include <asm/tlb.h>
#include <asm/mmu_context.h>
@ -337,10 +337,10 @@ phys_pte_init(pte_t *pte_page, unsigned long paddr, unsigned long paddr_end,
paddr_next = (paddr & PAGE_MASK) + PAGE_SIZE;
if (paddr >= paddr_end) {
if (!after_bootmem &&
!e820_any_mapped(paddr & PAGE_MASK, paddr_next,
E820_RAM) &&
!e820_any_mapped(paddr & PAGE_MASK, paddr_next,
E820_RESERVED_KERN))
!e820__mapped_any(paddr & PAGE_MASK, paddr_next,
E820_TYPE_RAM) &&
!e820__mapped_any(paddr & PAGE_MASK, paddr_next,
E820_TYPE_RESERVED_KERN))
set_pte(pte, __pte(0));
continue;
}
@ -392,10 +392,10 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long paddr, unsigned long paddr_end,
paddr_next = (paddr & PMD_MASK) + PMD_SIZE;
if (paddr >= paddr_end) {
if (!after_bootmem &&
!e820_any_mapped(paddr & PMD_MASK, paddr_next,
E820_RAM) &&
!e820_any_mapped(paddr & PMD_MASK, paddr_next,
E820_RESERVED_KERN))
!e820__mapped_any(paddr & PMD_MASK, paddr_next,
E820_TYPE_RAM) &&
!e820__mapped_any(paddr & PMD_MASK, paddr_next,
E820_TYPE_RESERVED_KERN))
set_pmd(pmd, __pmd(0));
continue;
}
@ -478,10 +478,10 @@ phys_pud_init(pud_t *pud_page, unsigned long paddr, unsigned long paddr_end,
if (paddr >= paddr_end) {
if (!after_bootmem &&
!e820_any_mapped(paddr & PUD_MASK, paddr_next,
E820_RAM) &&
!e820_any_mapped(paddr & PUD_MASK, paddr_next,
E820_RESERVED_KERN))
!e820__mapped_any(paddr & PUD_MASK, paddr_next,
E820_TYPE_RAM) &&
!e820__mapped_any(paddr & PUD_MASK, paddr_next,
E820_TYPE_RESERVED_KERN))
set_pud(pud, __pud(0));
continue;
}

3
arch/x86/mm/ioremap.c
View File

@ -9,12 +9,13 @@
#include <linux/bootmem.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/mmiotrace.h>
#include <asm/cacheflush.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/fixmap.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>

5
arch/x86/mm/kasan_init_64.c
View File

@ -8,11 +8,12 @@
#include <linux/sched/task.h>
#include <linux/vmalloc.h>
#include <asm/e820/types.h>
#include <asm/tlbflush.h>
#include <asm/sections.h>
extern pgd_t early_level4_pgt[PTRS_PER_PGD];
extern struct range pfn_mapped[E820_X_MAX];
extern struct range pfn_mapped[E820_MAX_ENTRIES];
static int __init map_range(struct range *range)
{
@ -104,7 +105,7 @@ void __init kasan_init(void)
kasan_populate_zero_shadow((void *)KASAN_SHADOW_START,
kasan_mem_to_shadow((void *)PAGE_OFFSET));
for (i = 0; i < E820_X_MAX; i++) {
for (i = 0; i < E820_MAX_ENTRIES; i++) {
if (pfn_mapped[i].end == 0)
break;

2
arch/x86/mm/mmio-mod.c
View File

@ -32,7 +32,7 @@
#include <linux/kallsyms.h>
#include <asm/pgtable.h>
#include <linux/mmiotrace.h>
#include <asm/e820.h> /* for ISA_START_ADDRESS */
#include <asm/e820/api.h> /* for ISA_START_ADDRESS */
#include <linux/atomic.h>
#include <linux/percpu.h>
#include <linux/cpu.h>

2
arch/x86/mm/numa.c
View File

@ -12,7 +12,7 @@
#include <linux/sched.h>
#include <linux/topology.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/proto.h>
#include <asm/dma.h>
#include <asm/amd_nb.h>

2
arch/x86/mm/pageattr.c
View File

@ -15,7 +15,7 @@
#include <linux/pci.h>
#include <linux/vmalloc.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/processor.h>
#include <asm/tlbflush.h>
#include <asm/sections.h>

3
arch/x86/mm/pat.c
View File

@ -10,6 +10,7 @@
#include <linux/seq_file.h>
#include <linux/bootmem.h>
#include <linux/debugfs.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/pfn_t.h>
#include <linux/slab.h>
@ -23,7 +24,7 @@
#include <asm/x86_init.h>
#include <asm/pgtable.h>
#include <asm/fcntl.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/mtrr.h>
#include <asm/page.h>
#include <asm/msr.h>

2
arch/x86/mm/pgtable_32.c
View File

@ -12,7 +12,7 @@
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
#include <asm/fixmap.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/tlb.h>
#include <asm/tlbflush.h>
#include <asm/io.h>

2
arch/x86/mm/srat.c
View File

@ -18,7 +18,7 @@
#include <linux/mm.h>
#include <asm/proto.h>
#include <asm/numa.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/apic.h>
#include <asm/uv/uv.h>

4
arch/x86/pci/i386.c
View File

@ -34,7 +34,7 @@
#include <linux/bootmem.h>
#include <asm/pat.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/pci_x86.h>
#include <asm/io_apic.h>
@ -398,7 +398,7 @@ void __init pcibios_resource_survey(void)
list_for_each_entry(bus, &pci_root_buses, node)
pcibios_allocate_resources(bus, 1);
e820_reserve_resources_late();
e820__reserve_resources_late();
/*
* Insert the IO APIC resources after PCI initialization has
* occurred to handle IO APICS that are mapped in on a BAR in

22
arch/x86/pci/mmconfig-shared.c
View File

@ -18,7 +18,7 @@
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/rculist.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/pci_x86.h>
#include <asm/acpi.h>
@ -423,7 +423,7 @@ static acpi_status find_mboard_resource(acpi_handle handle, u32 lvl,
return AE_OK;
}
static int is_acpi_reserved(u64 start, u64 end, unsigned not_used)
static bool is_acpi_reserved(u64 start, u64 end, unsigned not_used)
{
struct resource mcfg_res;
@ -440,11 +440,11 @@ static int is_acpi_reserved(u64 start, u64 end, unsigned not_used)
return mcfg_res.flags;
}
typedef int (*check_reserved_t)(u64 start, u64 end, unsigned type);
typedef bool (*check_reserved_t)(u64 start, u64 end, unsigned type);
static int __ref is_mmconf_reserved(check_reserved_t is_reserved,
struct pci_mmcfg_region *cfg,
struct device *dev, int with_e820)
static bool __ref is_mmconf_reserved(check_reserved_t is_reserved,
struct pci_mmcfg_region *cfg,
struct device *dev, int with_e820)
{
u64 addr = cfg->res.start;
u64 size = resource_size(&cfg->res);
@ -452,7 +452,7 @@ static int __ref is_mmconf_reserved(check_reserved_t is_reserved,
int num_buses;
char *method = with_e820 ? "E820" : "ACPI motherboard resources";
while (!is_reserved(addr, addr + size, E820_RESERVED)) {
while (!is_reserved(addr, addr + size, E820_TYPE_RESERVED)) {
size >>= 1;
if (size < (16UL<<20))
break;
@ -494,8 +494,8 @@ static int __ref is_mmconf_reserved(check_reserved_t is_reserved,
return 1;
}
static int __ref pci_mmcfg_check_reserved(struct device *dev,
struct pci_mmcfg_region *cfg, int early)
static bool __ref
pci_mmcfg_check_reserved(struct device *dev, struct pci_mmcfg_region *cfg, int early)
{
if (!early && !acpi_disabled) {
if (is_mmconf_reserved(is_acpi_reserved, cfg, dev, 0))
@ -514,7 +514,7 @@ static int __ref pci_mmcfg_check_reserved(struct device *dev,
}
/*
* e820_all_mapped() is marked as __init.
* e820__mapped_all() is marked as __init.
* All entries from ACPI MCFG table have been checked at boot time.
* For MCFG information constructed from hotpluggable host bridge's
* _CBA method, just assume it's reserved.
@ -525,7 +525,7 @@ static int __ref pci_mmcfg_check_reserved(struct device *dev,
/* Don't try to do this check unless configuration
type 1 is available. how about type 2 ?*/
if (raw_pci_ops)
return is_mmconf_reserved(e820_all_mapped, cfg, dev, 1);
return is_mmconf_reserved(e820__mapped_all, cfg, dev, 1);
return 0;
}

2
arch/x86/pci/mmconfig_32.c
View File

@ -12,7 +12,7 @@
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/rcupdate.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/pci_x86.h>
/* Assume systems with more busses have correct MCFG */

2
arch/x86/pci/mmconfig_64.c
View File

@ -10,7 +10,7 @@
#include <linux/acpi.h>
#include <linux/bitmap.h>
#include <linux/rcupdate.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/pci_x86.h>
#define PREFIX "PCI: "

2
arch/x86/pci/pcbios.c
View File

@ -7,7 +7,9 @@
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/uaccess.h>
#include <asm/pci_x86.h>
#include <asm/e820/types.h>
#include <asm/pci-functions.h>
#include <asm/cacheflush.h>

19
arch/x86/platform/efi/efi.c
View File

@ -47,6 +47,7 @@
#include <asm/setup.h>
#include <asm/efi.h>
#include <asm/e820/api.h>
#include <asm/time.h>
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
@ -139,21 +140,21 @@ static void __init do_add_efi_memmap(void)
case EFI_BOOT_SERVICES_DATA:
case EFI_CONVENTIONAL_MEMORY:
if (md->attribute & EFI_MEMORY_WB)
e820_type = E820_RAM;
e820_type = E820_TYPE_RAM;
else
e820_type = E820_RESERVED;
e820_type = E820_TYPE_RESERVED;
break;
case EFI_ACPI_RECLAIM_MEMORY:
e820_type = E820_ACPI;
e820_type = E820_TYPE_ACPI;
break;
case EFI_ACPI_MEMORY_NVS:
e820_type = E820_NVS;
e820_type = E820_TYPE_NVS;
break;
case EFI_UNUSABLE_MEMORY:
e820_type = E820_UNUSABLE;
e820_type = E820_TYPE_UNUSABLE;
break;
case EFI_PERSISTENT_MEMORY:
e820_type = E820_PMEM;
e820_type = E820_TYPE_PMEM;
break;
default:
/*
@ -161,12 +162,12 @@ static void __init do_add_efi_memmap(void)
* EFI_RUNTIME_SERVICES_DATA EFI_MEMORY_MAPPED_IO
* EFI_MEMORY_MAPPED_IO_PORT_SPACE EFI_PAL_CODE
*/
e820_type = E820_RESERVED;
e820_type = E820_TYPE_RESERVED;
break;
}
e820_add_region(start, size, e820_type);
e820__range_add(start, size, e820_type);
}
sanitize_e820_map(e820->map, ARRAY_SIZE(e820->map), &e820->nr_map);
e820__update_table(e820_table);
}
int __init efi_memblock_x86_reserve_range(void)

2
arch/x86/platform/efi/efi_64.c
View File

@ -35,7 +35,7 @@
#include <asm/setup.h>
#include <asm/page.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
#include <asm/proto.h>

8
arch/x86/platform/efi/quirks.c
View File

@ -11,6 +11,8 @@
#include <linux/bootmem.h>
#include <linux/acpi.h>
#include <linux/dmi.h>
#include <asm/e820/api.h>
#include <asm/efi.h>
#include <asm/uv/uv.h>
@ -244,14 +246,14 @@ void __init efi_arch_mem_reserve(phys_addr_t addr, u64 size)
* else. We must only reserve (and then free) regions:
*
* - Not within any part of the kernel
* - Not the BIOS reserved area (E820_RESERVED, E820_NVS, etc)
* - Not the BIOS reserved area (E820_TYPE_RESERVED, E820_TYPE_NVS, etc)
*/
static bool can_free_region(u64 start, u64 size)
{
if (start + size > __pa_symbol(_text) && start <= __pa_symbol(_end))
return false;
if (!e820_all_mapped(start, start+size, E820_RAM))
if (!e820__mapped_all(start, start+size, E820_TYPE_RAM))
return false;
return true;
@ -284,7 +286,7 @@ void __init efi_reserve_boot_services(void)
* A good example of a critical region that must not be
* freed is page zero (first 4Kb of memory), which may
* contain boot services code/data but is marked
* E820_RESERVED by trim_bios_range().
* E820_TYPE_RESERVED by trim_bios_range().
*/
if (!already_reserved) {
memblock_reserve(start, size);

16
arch/x86/power/hibernate_64.c
View File

@ -16,6 +16,7 @@
#include <crypto/hash.h>
#include <asm/e820/api.h>
#include <asm/init.h>
#include <asm/proto.h>
#include <asm/page.h>
@ -195,12 +196,12 @@ struct restore_data_record {
#if IS_BUILTIN(CONFIG_CRYPTO_MD5)
/**
* get_e820_md5 - calculate md5 according to given e820 map
* get_e820_md5 - calculate md5 according to given e820 table
*
* @map: the e820 map to be calculated
* @table: the e820 table 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_table *table, void *buf)
{
struct scatterlist sg;
struct crypto_ahash *tfm;
@ -213,10 +214,9 @@ 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_table, entries) + sizeof(struct e820_entry) * table->nr_entries;
ahash_request_set_tfm(req, tfm);
sg_init_one(&sg, (u8 *)map, size);
sg_init_one(&sg, (u8 *)table, size);
ahash_request_set_callback(req, 0, NULL, NULL);
ahash_request_set_crypt(req, &sg, buf, size);
@ -231,7 +231,7 @@ static int get_e820_md5(struct e820map *map, void *buf)
static void hibernation_e820_save(void *buf)
{
get_e820_md5(e820_saved, buf);
get_e820_md5(e820_table_firmware, buf);
}
static bool hibernation_e820_mismatch(void *buf)
@ -244,7 +244,7 @@ static bool hibernation_e820_mismatch(void *buf)
if (!memcmp(result, buf, MD5_DIGEST_SIZE))
return false;
ret = get_e820_md5(e820_saved, result);
ret = get_e820_md5(e820_table_firmware, result);
if (ret)
return true;

27
arch/x86/xen/enlighten.c
View File

@ -76,6 +76,7 @@
#include <asm/mwait.h>
#include <asm/pci_x86.h>
#include <asm/cpu.h>
#include <asm/e820/api.h>
#ifdef CONFIG_ACPI
#include <linux/acpi.h>
@ -1690,34 +1691,32 @@ static void __init init_pvh_bootparams(void)
memset(&pvh_bootparams, 0, sizeof(pvh_bootparams));
memmap.nr_entries = ARRAY_SIZE(pvh_bootparams.e820_map);
set_xen_guest_handle(memmap.buffer, pvh_bootparams.e820_map);
memmap.nr_entries = ARRAY_SIZE(pvh_bootparams.e820_table);
set_xen_guest_handle(memmap.buffer, pvh_bootparams.e820_table);
rc = HYPERVISOR_memory_op(XENMEM_memory_map, &memmap);
if (rc) {
xen_raw_printk("XENMEM_memory_map failed (%d)\n", rc);
BUG();
}
if (memmap.nr_entries < E820MAX - 1) {
pvh_bootparams.e820_map[memmap.nr_entries].addr =
if (memmap.nr_entries < E820_MAX_ENTRIES_ZEROPAGE - 1) {
pvh_bootparams.e820_table[memmap.nr_entries].addr =
ISA_START_ADDRESS;
pvh_bootparams.e820_map[memmap.nr_entries].size =
pvh_bootparams.e820_table[memmap.nr_entries].size =
ISA_END_ADDRESS - ISA_START_ADDRESS;
pvh_bootparams.e820_map[memmap.nr_entries].type =
E820_RESERVED;
pvh_bootparams.e820_table[memmap.nr_entries].type =
E820_TYPE_RESERVED;
memmap.nr_entries++;
} else
xen_raw_printk("Warning: Can fit ISA range into e820\n");
sanitize_e820_map(pvh_bootparams.e820_map,
ARRAY_SIZE(pvh_bootparams.e820_map),
&memmap.nr_entries);
pvh_bootparams.e820_entries = memmap.nr_entries;
for (i = 0; i < pvh_bootparams.e820_entries; i++)
e820_add_region(pvh_bootparams.e820_map[i].addr,
pvh_bootparams.e820_map[i].size,
pvh_bootparams.e820_map[i].type);
e820__range_add(pvh_bootparams.e820_table[i].addr,
pvh_bootparams.e820_table[i].size,
pvh_bootparams.e820_table[i].type);
e820__update_table(e820_table);
pvh_bootparams.hdr.cmd_line_ptr =
pvh_start_info.cmdline_paddr;

2
arch/x86/xen/mmu.c
View File

@ -58,7 +58,7 @@
#include <asm/mmu_context.h>
#include <asm/setup.h>
#include <asm/paravirt.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/linkage.h>
#include <asm/page.h>
#include <asm/init.h>

118
arch/x86/xen/setup.c
View File

@ -14,7 +14,7 @@
#include <asm/elf.h>
#include <asm/vdso.h>
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/setup.h>
#include <asm/acpi.h>
#include <asm/numa.h>
@ -41,8 +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 u32 xen_e820_map_entries __initdata;
static struct e820_table xen_e820_table __initdata;
/*
* Buffer used to remap identity mapped pages. We only need the virtual space.
@ -198,15 +197,15 @@ 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_table.entries;
unsigned int i;
unsigned long done = 0;
for (i = 0; i < xen_e820_map_entries; i++, entry++) {
for (i = 0; i < xen_e820_table.nr_entries; i++, entry++) {
unsigned long s_pfn;
unsigned long e_pfn;
if (entry->type != E820_RAM)
if (entry->type != E820_TYPE_RAM)
continue;
e_pfn = PFN_DOWN(entry->addr + entry->size);
@ -457,7 +456,7 @@ 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_table.entries;
int i;
/*
@ -471,13 +470,13 @@ static unsigned long __init xen_foreach_remap_area(unsigned long nr_pages,
* example) the DMI tables in a reserved region that begins on
* a non-page boundary.
*/
for (i = 0; i < xen_e820_map_entries; i++, entry++) {
for (i = 0; i < xen_e820_table.nr_entries; i++, entry++) {
phys_addr_t end = entry->addr + entry->size;
if (entry->type == E820_RAM || i == xen_e820_map_entries - 1) {
if (entry->type == E820_TYPE_RAM || i == xen_e820_table.nr_entries - 1) {
unsigned long start_pfn = PFN_DOWN(start);
unsigned long end_pfn = PFN_UP(end);
if (entry->type == E820_RAM)
if (entry->type == E820_TYPE_RAM)
end_pfn = PFN_UP(entry->addr);
if (start_pfn < end_pfn)
@ -591,28 +590,28 @@ static void __init xen_align_and_add_e820_region(phys_addr_t start,
phys_addr_t end = start + size;
/* Align RAM regions to page boundaries. */
if (type == E820_RAM) {
if (type == E820_TYPE_RAM) {
start = PAGE_ALIGN(start);
end &= ~((phys_addr_t)PAGE_SIZE - 1);
}
e820_add_region(start, end - start, type);
e820__range_add(start, end - start, type);
}
static void __init xen_ignore_unusable(void)
{
struct e820entry *entry = xen_e820_map;
struct e820_entry *entry = xen_e820_table.entries;
unsigned int i;
for (i = 0; i < xen_e820_map_entries; i++, entry++) {
if (entry->type == E820_UNUSABLE)
entry->type = E820_RAM;
for (i = 0; i < xen_e820_table.nr_entries; i++, entry++) {
if (entry->type == E820_TYPE_UNUSABLE)
entry->type = E820_TYPE_RAM;
}
}
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;
@ -620,10 +619,10 @@ bool __init xen_is_e820_reserved(phys_addr_t start, phys_addr_t size)
return false;
end = start + size;
entry = xen_e820_map;
entry = xen_e820_table.entries;
for (mapcnt = 0; mapcnt < xen_e820_map_entries; mapcnt++) {
if (entry->type == E820_RAM && entry->addr <= start &&
for (mapcnt = 0; mapcnt < xen_e820_table.nr_entries; mapcnt++) {
if (entry->type == E820_TYPE_RAM && entry->addr <= start &&
(entry->addr + entry->size) >= end)
return false;
@ -645,10 +644,10 @@ 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_table.entries;
for (mapcnt = 0; mapcnt < xen_e820_map_entries; mapcnt++, entry++) {
if (entry->type != E820_RAM || entry->size < size)
for (mapcnt = 0; mapcnt < xen_e820_table.nr_entries; mapcnt++, entry++) {
if (entry->type != E820_TYPE_RAM || entry->size < size)
continue;
start = entry->addr;
for (addr = start; addr < start + size; addr += PAGE_SIZE) {
@ -750,8 +749,8 @@ char * __init xen_memory_setup(void)
max_pfn = min(max_pfn, xen_start_info->nr_pages);
mem_end = PFN_PHYS(max_pfn);
memmap.nr_entries = ARRAY_SIZE(xen_e820_map);
set_xen_guest_handle(memmap.buffer, xen_e820_map);
memmap.nr_entries = ARRAY_SIZE(xen_e820_table.entries);
set_xen_guest_handle(memmap.buffer, xen_e820_table.entries);
op = xen_initial_domain() ?
XENMEM_machine_memory_map :
@ -760,16 +759,16 @@ char * __init xen_memory_setup(void)
if (rc == -ENOSYS) {
BUG_ON(xen_initial_domain());
memmap.nr_entries = 1;
xen_e820_map[0].addr = 0ULL;
xen_e820_map[0].size = mem_end;
xen_e820_table.entries[0].addr = 0ULL;
xen_e820_table.entries[0].size = mem_end;
/* 8MB slack (to balance backend allocations). */
xen_e820_map[0].size += 8ULL << 20;
xen_e820_map[0].type = E820_RAM;
xen_e820_table.entries[0].size += 8ULL << 20;
xen_e820_table.entries[0].type = E820_TYPE_RAM;
rc = 0;
}
BUG_ON(rc);
BUG_ON(memmap.nr_entries == 0);
xen_e820_map_entries = memmap.nr_entries;
xen_e820_table.nr_entries = memmap.nr_entries;
/*
* Xen won't allow a 1:1 mapping to be created to UNUSABLE
@ -783,8 +782,7 @@ char * __init xen_memory_setup(void)
xen_ignore_unusable();
/* Make sure the Xen-supplied memory map is well-ordered. */
sanitize_e820_map(xen_e820_map, ARRAY_SIZE(xen_e820_map),
&xen_e820_map_entries);
e820__update_table(&xen_e820_table);
max_pages = xen_get_max_pages();
@ -811,15 +809,15 @@ char * __init xen_memory_setup(void)
extra_pages = min3(EXTRA_MEM_RATIO * min(max_pfn, PFN_DOWN(MAXMEM)),
extra_pages, max_pages - max_pfn);
i = 0;
addr = xen_e820_map[0].addr;
size = xen_e820_map[0].size;
while (i < xen_e820_map_entries) {
addr = xen_e820_table.entries[0].addr;
size = xen_e820_table.entries[0].size;
while (i < xen_e820_table.nr_entries) {
bool discard = false;
chunk_size = size;
type = xen_e820_map[i].type;
type = xen_e820_table.entries[i].type;
if (type == E820_RAM) {
if (type == E820_TYPE_RAM) {
if (addr < mem_end) {
chunk_size = min(size, mem_end - addr);
} else if (extra_pages) {
@ -840,9 +838,9 @@ char * __init xen_memory_setup(void)
size -= chunk_size;
if (size == 0) {
i++;
if (i < xen_e820_map_entries) {
addr = xen_e820_map[i].addr;
size = xen_e820_map[i].size;
if (i < xen_e820_table.nr_entries) {
addr = xen_e820_table.entries[i].addr;
size = xen_e820_table.entries[i].size;
}
}
}
@ -858,10 +856,9 @@ char * __init xen_memory_setup(void)
* reserve ISA memory anyway because too many things poke
* about in there.
*/
e820_add_region(ISA_START_ADDRESS, ISA_END_ADDRESS - ISA_START_ADDRESS,
E820_RESERVED);
e820__range_add(ISA_START_ADDRESS, ISA_END_ADDRESS - ISA_START_ADDRESS, E820_TYPE_RESERVED);
sanitize_e820_map(e820->map, ARRAY_SIZE(e820->map), &e820->nr_map);
e820__update_table(e820_table);
/*
* Check whether the kernel itself conflicts with the target E820 map.
@ -914,6 +911,37 @@ char * __init xen_memory_setup(void)
return "Xen";
}
/*
* Machine specific memory setup for auto-translated guests.
*/
char * __init xen_auto_xlated_memory_setup(void)
{
struct xen_memory_map memmap;
int i;
int rc;
memmap.nr_entries = ARRAY_SIZE(xen_e820_table.entries);
set_xen_guest_handle(memmap.buffer, xen_e820_table.entries);
rc = HYPERVISOR_memory_op(XENMEM_memory_map, &memmap);
if (rc < 0)
panic("No memory map (%d)\n", rc);
xen_e820_table.nr_entries = memmap.nr_entries;
e820__update_table(&xen_e820_table);
for (i = 0; i < xen_e820_table.nr_entries; i++)
e820__range_add(xen_e820_table.entries[i].addr, xen_e820_table.entries[i].size, xen_e820_table.entries[i].type);
/* Remove p2m info, it is not needed. */
xen_start_info->mfn_list = 0;
xen_start_info->first_p2m_pfn = 0;
xen_start_info->nr_p2m_frames = 0;
return "Xen";
}
/*
* Set the bit indicating "nosegneg" library variants should be used.
* We only need to bother in pure 32-bit mode; compat 32-bit processes
@ -999,8 +1027,8 @@ void __init xen_pvmmu_arch_setup(void)
void __init xen_arch_setup(void)
{
xen_panic_handler_init();
xen_pvmmu_arch_setup();
if (!xen_feature(XENFEAT_auto_translated_physmap))
xen_pvmmu_arch_setup();
#ifdef CONFIG_ACPI
if (!(xen_start_info->flags & SIF_INITDOMAIN)) {

2
drivers/acpi/tables.c
View File

@ -540,7 +540,7 @@ void __init acpi_table_upgrade(void)
* But it's not enough on X86 because ioremap will
* complain later (used by acpi_os_map_memory) that the pages
* that should get mapped are not marked "reserved".
* Both memblock_reserve and e820_add_region (via arch_reserve_mem_area)
* Both memblock_reserve and e820__range_add (via arch_reserve_mem_area)
* works fine.
*/
memblock_reserve(acpi_tables_addr, all_tables_size);

2
drivers/char/agp/amd64-agp.c
View File

@ -14,7 +14,7 @@
#include <linux/agp_backend.h>
#include <linux/mmzone.h>
#include <asm/page.h> /* PAGE_SIZE */
#include <asm/e820.h>
#include <asm/e820/api.h>
#include <asm/amd_nb.h>
#include <asm/gart.h>
#include "agp.h"

1
include/linux/kernel.h
View File

@ -438,6 +438,7 @@ extern int get_option(char **str, int *pint);
extern char *get_options(const char *str, int nints, int *ints);
extern unsigned long long memparse(const char *ptr, char **retptr);
extern bool parse_option_str(const char *str, const char *option);
extern char *next_arg(char *args, char **param, char **val);
extern int core_kernel_text(unsigned long addr);
extern int core_kernel_data(unsigned long addr);

2
include/xen/page.h
View File

@ -38,7 +38,7 @@ struct xen_memory_region {
unsigned long n_pfns;
};
#define XEN_EXTRA_MEM_MAX_REGIONS 128 /* == E820MAX */
#define XEN_EXTRA_MEM_MAX_REGIONS 128 /* == E820_MAX_ENTRIES_ZEROPAGE */
extern __initdata
struct xen_memory_region xen_extra_mem[XEN_EXTRA_MEM_MAX_REGIONS];

52
kernel/params.c
View File

@ -160,58 +160,6 @@ static int parse_one(char *param,
return -ENOENT;
}
/* You can use " around spaces, but can't escape ". */
/* Hyphens and underscores equivalent in parameter names. */
static char *next_arg(char *args, char **param, char **val)
{
unsigned int i, equals = 0;
int in_quote = 0, quoted = 0;
char *next;
if (*args == '"') {
args++;
in_quote = 1;
quoted = 1;
}
for (i = 0; args[i]; i++) {
if (isspace(args[i]) && !in_quote)
break;
if (equals == 0) {
if (args[i] == '=')
equals = i;
}
if (args[i] == '"')
in_quote = !in_quote;
}
*param = args;
if (!equals)
*val = NULL;
else {
args[equals] = '\0';
*val = args + equals + 1;
/* Don't include quotes in value. */
if (**val == '"') {
(*val)++;
if (args[i-1] == '"')
args[i-1] = '\0';
}
}
if (quoted && args[i-1] == '"')
args[i-1] = '\0';
if (args[i]) {
args[i] = '\0';
next = args + i + 1;
} else
next = args + i;
/* Chew up trailing spaces. */
return skip_spaces(next);
}
/* Args looks like "foo=bar,bar2 baz=fuz wiz". */
char *parse_args(const char *doing,
char *args,

57
lib/cmdline.c
View File

@ -15,6 +15,7 @@
#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/ctype.h>
/*
* If a hyphen was found in get_option, this will handle the
@ -189,3 +190,59 @@ bool parse_option_str(const char *str, const char *option)
return false;
}
/*
* Parse a string to get a param value pair.
* You can use " around spaces, but can't escape ".
* Hyphens and underscores equivalent in parameter names.
*/
char *next_arg(char *args, char **param, char **val)
{
unsigned int i, equals = 0;
int in_quote = 0, quoted = 0;
char *next;
if (*args == '"') {
args++;
in_quote = 1;
quoted = 1;
}
for (i = 0; args[i]; i++) {
if (isspace(args[i]) && !in_quote)
break;
if (equals == 0) {
if (args[i] == '=')
equals = i;
}
if (args[i] == '"')
in_quote = !in_quote;
}
*param = args;
if (!equals)
*val = NULL;
else {
args[equals] = '\0';
*val = args + equals + 1;
/* Don't include quotes in value. */
if (**val == '"') {
(*val)++;
if (args[i-1] == '"')
args[i-1] = '\0';
}
}
if (quoted && args[i-1] == '"')
args[i-1] = '\0';
if (args[i]) {
args[i] = '\0';
next = args + i + 1;
} else
next = args + i;
/* Chew up trailing spaces. */
return skip_spaces(next);
//return next;
}

2
tools/lguest/lguest.c
View File

@ -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_table[0] = ((struct e820_entry) { 0, mem, E820_TYPE_RAM });
/*
* The boot header contains a command line pointer: we put the command
* line after the boot header.