linux_efi_memreserve
static struct linux_efi_memreserve *efi_memreserve_root __ro_after_init;
struct linux_efi_memreserve *rsv;
rsv = (struct linux_efi_memreserve *)__get_free_page(GFP_ATOMIC);
struct linux_efi_memreserve *rsv;
struct linux_efi_memreserve *rsv;
#define EFI_MEMRESERVE_COUNT(size) (((size) - sizeof(struct linux_efi_memreserve)) \
/ sizeof_field(struct linux_efi_memreserve, entry[0]))