From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Tue, 27 Nov 2018 12:23:35 +0000 (+0100)
Subject: MdePkg/ProcessorBind.h AARCH64: limit MAX_ADDRESS to 48 bits
X-Git-Tag: edk2-stable201903~545
X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=82379bf6603274e81604d5a6f6bb14bdde616286

MdePkg/ProcessorBind.h AARCH64: limit MAX_ADDRESS to 48 bits

AArch64 supports the use of more than 48 bits for physical and/or
virtual addressing, but only if the page size is set to 64 KB,
which is not supported by UEFI. So redefine MAX_ADDRESS to cover
only 48 address bits.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>
---

diff --git a/MdePkg/Include/AArch64/ProcessorBind.h b/MdePkg/Include/AArch64/ProcessorBind.h
index 968c18f915..dad75df1c5 100644
--- a/MdePkg/Include/AArch64/ProcessorBind.h
+++ b/MdePkg/Include/AArch64/ProcessorBind.h
@@ -138,9 +138,9 @@ typedef INT64   INTN;
 #define MAX_2_BITS  0xC000000000000000ULL
 
 ///
-/// Maximum legal AARCH64  address
+/// Maximum legal AARCH64  address (48 bits for 4 KB page size)
 ///
-#define MAX_ADDRESS   0xFFFFFFFFFFFFFFFFULL
+#define MAX_ADDRESS   0xFFFFFFFFFFFFULL
 
 ///
 /// Maximum legal AArch64 INTN and UINTN values.