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-rw-r--r--arch/x86/boot/compressed/eboot.c20
-rw-r--r--arch/x86/boot/compressed/eboot.h1
2 files changed, 15 insertions, 6 deletions
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 4055e63d0b04..fec216f4fbc3 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -643,14 +643,22 @@ grow:
u64 size;
size = initrds[j].size;
- status = efi_call_phys3(fh->read, initrds[j].handle,
- &size, addr);
- if (status != EFI_SUCCESS)
- goto free_initrd_total;
+ while (size) {
+ u64 chunksize;
+ if (size > EFI_READ_CHUNK_SIZE)
+ chunksize = EFI_READ_CHUNK_SIZE;
+ else
+ chunksize = size;
+ status = efi_call_phys3(fh->read,
+ initrds[j].handle,
+ &chunksize, addr);
+ if (status != EFI_SUCCESS)
+ goto free_initrd_total;
+ addr += chunksize;
+ size -= chunksize;
+ }
efi_call_phys1(fh->close, initrds[j].handle);
-
- addr += size;
}
}
diff --git a/arch/x86/boot/compressed/eboot.h b/arch/x86/boot/compressed/eboot.h
index f66d023e91ef..39251663e65b 100644
--- a/arch/x86/boot/compressed/eboot.h
+++ b/arch/x86/boot/compressed/eboot.h
@@ -12,6 +12,7 @@
#define DESC_TYPE_CODE_DATA (1 << 0)
#define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
+#define EFI_READ_CHUNK_SIZE (1024 * 1024)
#define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0
#define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1