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UEFI: add FIXME comments to function emalloc() & __emalloc()

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Add a FIXME comment that the emalloc() & __emalloc cannot
guarantee to return address under 4G, and the hypervisor
cannot handle params, which address is above 4G, delivered
from efi stub.

Signed-off-by: Zheng, Gen <gen.zheng@intel.com>
This commit is contained in:
Zheng, Gen 2018-03-29 10:22:04 +08:00 committed by Jack Ren
parent 88b79c901b
commit e0128b1173
1 changed files with 10 additions and 1 deletions
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11
hypervisor/bsp/uefi/efi/malloc.c
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@ -100,6 +100,10 @@ failed:
* @addr: a pointer to the allocated address on success * @addr: a pointer to the allocated address on success
* *
* If we cannot satisfy @align we return 0. * If we cannot satisfy @align we return 0.
*
* FIXME: This function cannot guarantee to return address under 4G,
* and the hypervisor cannot handle params, which address is above 4G,
* delivered from efi stub.
*/ */
EFI_STATUS emalloc(UINTN size, UINTN align, EFI_PHYSICAL_ADDRESS *addr) EFI_STATUS emalloc(UINTN size, UINTN align, EFI_PHYSICAL_ADDRESS *addr)
{ {
@ -160,7 +164,12 @@ fail:
return err; return err;
} }
EFI_STATUS __emalloc(UINTN size, UINTN align, EFI_PHYSICAL_ADDRESS *addr, EFI_MEMORY_TYPE mem_type) /* FIXME: This function cannot guarantee to return address under 4G,
* and the hypervisor cannot handle params, which address is above 4G,
* delivered from efi stub.
*/
EFI_STATUS __emalloc(UINTN size, UINTN align, EFI_PHYSICAL_ADDRESS *addr,
EFI_MEMORY_TYPE mem_type)
{ {
UINTN map_size, map_key, desc_size; UINTN map_size, map_key, desc_size;
EFI_MEMORY_DESCRIPTOR *map_buf; EFI_MEMORY_DESCRIPTOR *map_buf;