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

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Pull EFI fixes from Ingo Molnar:
 "A number of regression fixes:

   - Fix a boot hang on machines that have somewhat unusual memory map
     entries of phys_addr=0x0 num_pages=0, which broke due to a recent
     commit. This commit got cherry-picked from the v4.11 queue because
     the bug is affecting real machines.

   - Fix a boot hang also reported by KASAN, caused by incorrect init
     ordering introduced by a recent optimization.

   - Fix a recent robustification fix to allocate_new_fdt_and_exit_boot()
     that introduced an invalid assumption. Neither bugs were seen in
     the wild AFAIK"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/x86: Prune invalid memory map entries and fix boot regression
  x86/efi: Don't allocate memmap through memblock after mm_init()
  efi/libstub/arm*: Pass latest memory map to the kernel
This commit is contained in:
Linus Torvalds
2017-01-15 10:54:39 -08:00
parent f4d3935e4f 0100a3e67a
commit 255e6140fa
7 changed files with 165 additions and 43 deletions
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2
include/linux/efi.h
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@@ -103,6 +103,7 @@ typedef struct {
#define EFI_PAGE_SHIFT 12
#define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
#define EFI_PAGES_MAX (U64_MAX >> EFI_PAGE_SHIFT)
typedef struct {
u32 type;
@@ -950,6 +951,7 @@ static inline efi_status_t efi_query_variable_store(u32 attributes,
#endif
extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
extern phys_addr_t __init efi_memmap_alloc(unsigned int num_entries);
extern int __init efi_memmap_init_early(struct efi_memory_map_data *data);
extern int __init efi_memmap_init_late(phys_addr_t addr, unsigned long size);
extern void __init efi_memmap_unmap(void);