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

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Pull misc x86 fixes from Ingo Molnar:
 "This contains:

   - EFI fixes
   - a boot printout fix
   - ASLR/kASLR fixes
   - intel microcode driver fixes
   - other misc fixes

  Most of the linecount comes from an EFI revert"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm/ASLR: Avoid PAGE_SIZE redefinition for UML subarch
  x86/microcode/intel: Handle truncated microcode images more robustly
  x86/microcode/intel: Guard against stack overflow in the loader
  x86, mm/ASLR: Fix stack randomization on 64-bit systems
  x86/mm/init: Fix incorrect page size in init_memory_mapping() printks
  x86/mm/ASLR: Propagate base load address calculation
  Documentation/x86: Fix path in zero-page.txt
  x86/apic: Fix the devicetree build in certain configs
  Revert "efi/libstub: Call get_memory_map() to obtain map and desc sizes"
  x86/efi: Avoid triple faults during EFI mixed mode calls
This commit is contained in:
Linus Torvalds
2015-02-21 10:41:29 -08:00
parent e2defd0271 570e1aa84c
commit 5fbe4c224c
20 changed files with 419 additions and 239 deletions
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28
arch/x86/mm/init.c
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@@ -238,6 +238,31 @@ static void __init_refok adjust_range_page_size_mask(struct map_range *mr,
}
}
static const char *page_size_string(struct map_range *mr)
{
static const char str_1g[] = "1G";
static const char str_2m[] = "2M";
static const char str_4m[] = "4M";
static const char str_4k[] = "4k";
if (mr->page_size_mask & (1<<PG_LEVEL_1G))
return str_1g;
/*
* 32-bit without PAE has a 4M large page size.
* PG_LEVEL_2M is misnamed, but we can at least
* print out the right size in the string.
*/
if (IS_ENABLED(CONFIG_X86_32) &&
!IS_ENABLED(CONFIG_X86_PAE) &&
mr->page_size_mask & (1<<PG_LEVEL_2M))
return str_4m;
if (mr->page_size_mask & (1<<PG_LEVEL_2M))
return str_2m;
return str_4k;
}
static int __meminit split_mem_range(struct map_range *mr, int nr_range,
unsigned long start,
unsigned long end)
@@ -333,8 +358,7 @@ static int __meminit split_mem_range(struct map_range *mr, int nr_range,
for (i = 0; i < nr_range; i++)
printk(KERN_DEBUG " [mem %#010lx-%#010lx] page %s\n",
mr[i].start, mr[i].end - 1,
(mr[i].page_size_mask & (1<<PG_LEVEL_1G))?"1G":(
(mr[i].page_size_mask & (1<<PG_LEVEL_2M))?"2M":"4k"));
page_size_string(&mr[i]));
return nr_range;
}