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efi: Use the generic efi.memmap instead of 'memmap'

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Guenter reports that commit:

  7bf793115d ("efi, x86: Rearrange efi_mem_attributes()")

breaks the IA64 compilation with the following error:

  drivers/built-in.o: In function `efi_mem_attributes': (.text+0xde962): undefined reference to `memmap'

Instead of using the (rather poorly named) global variable
'memmap' which doesn't exist on IA64, use efi.memmap which
points to the 'memmap' object on x86 and arm64 and which is NULL
for IA64.

The fact that efi.memmap is NULL for IA64 is OK because IA64
provides its own implementation of efi_mem_attributes().

Reported-by: Guenter Roeck <[email protected]>
Signed-off-by: Matt Fleming <[email protected]>
Cc: Ard Biesheuvel <[email protected]>
Cc: Jonathan Zhang <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephen Rothwell <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Tony Luck <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Matt Fleming 2015-10-03 23:26:07 +01:00 • committed by Ingo Molnar
commit 0ce423b649
1 changed files with 3 additions and 1 deletions
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4
drivers/firmware/efi/efi.c
View file

@ -623,13 +623,15 @@ char * __init efi_md_typeattr_format(char *buf, size_t size,
*/
u64 __weak efi_mem_attributes(unsigned long phys_addr)
{
struct efi_memory_map *map;
efi_memory_desc_t *md;
void *p;
if (!efi_enabled(EFI_MEMMAP))
return 0;
for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
map = efi.memmap;
for (p = map->map; p < map->map_end; p += map->desc_size) {
md = p;
if ((md->phys_addr <= phys_addr) &&
(phys_addr < (md->phys_addr +