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x86/boot/e820: Rename sanitize_e820_table() to e820__update_table()

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sanitize_e820_table() is a minor misnomer in that it suggests that
the E820 table requires sanitizing - which implies that it will only
do anything if the E820 table is irregular (not sane).

That is wrong, because sanitize_e820_table() also does a very regular
sorting of the E820 table, which is a necessity in the basic
append-only flow of E820 updates the kernel is allowed to perform to
it.

So rename it to e820__update_table() to include that purpose as well.

This also lines up all the table-update functions into a coherent
naming family:

  int  e820__update_table(struct e820_entry *biosmap, int max_nr_map, u32 *pnr_map);

  void e820__update_table_print(void);
  void e820__update_table_firmware(void);

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: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2017-01-28 14:09:20 +01:00
parent 6464d294d2
commit f52355a99f
7 changed files with 17 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/include/asm/e820/api.h
View File

@ -12,7 +12,7 @@ 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_table(struct e820_entry *biosmap, int max_nr_map, u32 *pnr_map);
extern int e820__update_table(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 e820__update_table_print(void);

2
arch/x86/include/asm/e820/types.h
View File

@ -21,7 +21,7 @@
*
* 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 sanitize_e820_table() to remove duplicates. The allowance
* 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

16
arch/x86/kernel/e820.c
View File

@ -193,7 +193,7 @@ void __init e820_print_map(char *who)
* sanitizing succeeds the *pnr_map will be updated with the new
* number of valid entries (something no more than max_nr_map).
*
* The return value from sanitize_e820_table() is zero if it
* The return value from e820__update_table() is zero if it
* successfully 'sanitized' the map entries passed in, and is -1
* if it did nothing, which can happen if either of (1) it was
* only passed one map entry, or (2) any of the input map entries
@ -259,7 +259,7 @@ 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_table(struct e820_entry *biosmap, int max_nr_map, u32 *pnr_map)
int __init e820__update_table(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;
@ -548,7 +548,7 @@ u64 __init e820_remove_range(u64 start, u64 size, unsigned old_type, int checkty
void __init e820__update_table_print(void)
{
if (sanitize_e820_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries))
if (e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries))
return;
pr_info("e820: modified physical RAM map:\n");
@ -557,7 +557,7 @@ void __init e820__update_table_print(void)
static void __init e820__update_table_firmware(void)
{
sanitize_e820_table(e820_table_firmware->entries, ARRAY_SIZE(e820_table_firmware->entries), &e820_table_firmware->nr_entries);
e820__update_table(e820_table_firmware->entries, ARRAY_SIZE(e820_table_firmware->entries), &e820_table_firmware->nr_entries);
}
#define MAX_GAP_END 0x100000000ull
@ -676,7 +676,7 @@ void __init e820__memory_setup_extended(u64 phys_addr, u32 data_len)
extmap = (struct e820_entry *)(sdata->data);
__append_e820_table(extmap, entries);
sanitize_e820_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
early_memunmap(sdata, data_len);
pr_info("e820: extended physical RAM map:\n");
@ -931,7 +931,7 @@ void __init e820_reserve_setup_data(void)
early_memunmap(data, sizeof(*data));
}
sanitize_e820_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
memcpy(e820_table_firmware, e820_table, sizeof(struct e820_table));
printk(KERN_INFO "extended physical RAM map:\n");
e820_print_map("reserve setup_data");
@ -945,7 +945,7 @@ void __init e820_reserve_setup_data(void)
void __init e820__finish_early_params(void)
{
if (userdef) {
if (sanitize_e820_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries) < 0)
if (e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries) < 0)
early_panic("Invalid user supplied memory map");
pr_info("e820: user-defined physical RAM map:\n");
@ -1130,7 +1130,7 @@ char *__init e820__memory_setup_default(void)
* the next section from 1mb->appropriate_mem_k
*/
new_nr = boot_params.e820_entries;
sanitize_e820_table(boot_params.e820_table, ARRAY_SIZE(boot_params.e820_table), &new_nr);
e820__update_table(boot_params.e820_table, ARRAY_SIZE(boot_params.e820_table), &new_nr);
boot_params.e820_entries = new_nr;
if (append_e820_table(boot_params.e820_table, boot_params.e820_entries) < 0) {

2
arch/x86/kernel/early-quirks.c
View File

@ -547,7 +547,7 @@ intel_graphics_stolen(int num, int slot, int func,
/* Mark this space as reserved */
e820_add_region(base, size, E820_RESERVED);
sanitize_e820_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
}
static void __init intel_graphics_quirks(int num, int slot, int func)

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

@ -740,7 +740,7 @@ static void __init trim_bios_range(void)
*/
e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1);
sanitize_e820_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
}
/* called before trim_bios_range() to spare extra sanitize */
@ -1033,7 +1033,7 @@ void __init setup_arch(char **cmdline_p)
if (ppro_with_ram_bug()) {
e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM,
E820_RESERVED);
sanitize_e820_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
printk(KERN_INFO "fixed physical RAM map:\n");
e820_print_map("bad_ppro");
}

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

@ -167,7 +167,7 @@ static void __init do_add_efi_memmap(void)
}
e820_add_region(start, size, e820_type);
}
sanitize_e820_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
}
int __init efi_memblock_x86_reserve_range(void)

6
arch/x86/xen/setup.c
View File

@ -783,7 +783,7 @@ char * __init xen_memory_setup(void)
xen_ignore_unusable();
/* Make sure the Xen-supplied memory map is well-ordered. */
sanitize_e820_table(xen_e820_table, ARRAY_SIZE(xen_e820_table),
e820__update_table(xen_e820_table, ARRAY_SIZE(xen_e820_table),
&xen_e820_table_entries);
max_pages = xen_get_max_pages();
@ -861,7 +861,7 @@ char * __init xen_memory_setup(void)
e820_add_region(ISA_START_ADDRESS, ISA_END_ADDRESS - ISA_START_ADDRESS,
E820_RESERVED);
sanitize_e820_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
/*
* Check whether the kernel itself conflicts with the target E820 map.
@ -932,7 +932,7 @@ char * __init xen_auto_xlated_memory_setup(void)
xen_e820_table_entries = memmap.nr_entries;
sanitize_e820_table(xen_e820_table, ARRAY_SIZE(xen_e820_table),
e820__update_table(xen_e820_table, ARRAY_SIZE(xen_e820_table),
&xen_e820_table_entries);
for (i = 0; i < xen_e820_table_entries; i++)