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From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
To: edk2-devel@lists.01.org
Cc: liming.gao@intel.com, michael.d.kinney@intel.com,
	leif.lindholm@linaro.org, lersek@redhat.com, philmd@redhat.com,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: [PATCH] MdePkg/ProcessorBind.h AARCH64: limit MAX_ADDRESS to 48 bits
Date: Tue, 27 Nov 2018 13:27:48 +0100	[thread overview]
Message-ID: <20181127122748.24527-1-ard.biesheuvel@linaro.org> (raw)

AArch64 support 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/EDK2. 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>
---
 MdePkg/Include/AArch64/ProcessorBind.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/MdePkg/Include/AArch64/ProcessorBind.h b/MdePkg/Include/AArch64/ProcessorBind.h
index 968c18f915ae..dad75df1c579 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.
-- 
2.19.1



             reply	other threads:[~2018-11-27 12:27 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-27 12:27 Ard Biesheuvel [this message]
2018-11-27 13:38 ` [PATCH] MdePkg/ProcessorBind.h AARCH64: limit MAX_ADDRESS to 48 bits Leif Lindholm
2018-11-27 14:51 ` Laszlo Ersek
2018-11-29 14:59   ` Gao, Liming
2018-11-29 18:02     ` Laszlo Ersek

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