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-rw-r--r--include/efi_loader.h11
1 files changed, 10 insertions, 1 deletions
diff --git a/include/efi_loader.h b/include/efi_loader.h
index f399e99506..3c90515fef 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -344,7 +344,16 @@ struct efi_simple_file_system_protocol *efi_simple_file_system(
/* open file from device-path: */
struct efi_file_handle *efi_file_from_path(struct efi_device_path *fp);
-
+/**
+ * efi_size_in_pages() - convert size in bytes to size in pages
+ *
+ * This macro returns the number of EFI memory pages required to hold 'size'
+ * bytes.
+ *
+ * @size: size in bytes
+ * Return: size in pages
+ */
+#define efi_size_in_pages(size) ((size + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT)
/* Generic EFI memory allocator, call this to get memory */
void *efi_alloc(uint64_t len, int memory_type);
/* More specific EFI memory allocator, called by EFI payloads */