diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2020-01-13 20:22:43 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-01-20 10:14:29 +0300 |
| commit | 1db91035d01aa8bfa2350c00ccb63d629b4041ad (patch) | |
| tree | 8e71bbf16648063805b4a959510cd45852733bf2 /include/linux/efi.h | |
| parent | 26c0e44a213b272abec0e8fba4a5a2801f95208e (diff) | |
| download | linux-1db91035d01aa8bfa2350c00ccb63d629b4041ad.tar.xz | |
efi: Add tracking for dynamically allocated memmaps
In preparation for fixing efi_memmap_alloc() leaks, add support for
recording whether the memmap was dynamically allocated from slab,
memblock, or is the original physical memmap provided by the platform.
Given this tracking is established in efi_memmap_alloc() and needs to be
carried to efi_memmap_install(), use 'struct efi_memory_map_data' to
convey the flags.
Some small cleanups result from this reorganization, specifically the
removal of local variables for 'phys' and 'size' that are already
tracked in @data.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200113172245.27925-12-ardb@kernel.org
Diffstat (limited to 'include/linux/efi.h')
| -rw-r--r-- | include/linux/efi.h | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/include/linux/efi.h b/include/linux/efi.h index f117d68c314e..adbe421835c1 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -759,8 +759,8 @@ typedef union { /* * Architecture independent structure for describing a memory map for the - * benefit of efi_memmap_init_early(), saving us the need to pass four - * parameters. + * benefit of efi_memmap_init_early(), and for passing context between + * efi_memmap_alloc() and efi_memmap_install(). */ struct efi_memory_map_data { phys_addr_t phys_map; @@ -778,6 +778,8 @@ struct efi_memory_map { unsigned long desc_version; unsigned long desc_size; #define EFI_MEMMAP_LATE (1UL << 0) +#define EFI_MEMMAP_MEMBLOCK (1UL << 1) +#define EFI_MEMMAP_SLAB (1UL << 2) unsigned long flags; }; @@ -972,11 +974,12 @@ 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_alloc(unsigned int num_entries, + struct efi_memory_map_data *data); 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); -extern int __init efi_memmap_install(phys_addr_t addr, unsigned int nr_map); +extern int __init efi_memmap_install(struct efi_memory_map_data *data); extern int __init efi_memmap_split_count(efi_memory_desc_t *md, struct range *range); extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap, |