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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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16
drivers/firmware/efi/libstub/efi-stub-helper.c
View File

@@ -75,29 +75,25 @@ efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg,
unsigned long key;
u32 desc_version;
*map_size = 0;
*desc_size = 0;
key = 0;
status = efi_call_early(get_memory_map, map_size, NULL,
&key, desc_size, &desc_version);
if (status != EFI_BUFFER_TOO_SMALL)
return EFI_LOAD_ERROR;
*map_size = sizeof(*m) * 32;
again:
/*
* Add an additional efi_memory_desc_t because we're doing an
* allocation which may be in a new descriptor region.
*/
*map_size += *desc_size;
*map_size += sizeof(*m);
status = efi_call_early(allocate_pool, EFI_LOADER_DATA,
*map_size, (void **)&m);
if (status != EFI_SUCCESS)
goto fail;
*desc_size = 0;
key = 0;
status = efi_call_early(get_memory_map, map_size, m,
&key, desc_size, &desc_version);
if (status == EFI_BUFFER_TOO_SMALL) {
efi_call_early(free_pool, m);
return EFI_LOAD_ERROR;
goto again;
}
if (status != EFI_SUCCESS)