linux-kernel - [PATCH 1/1] AArch64: TCR_TG1_64K incorrectly sets TCR

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Date:	Tue, 1 Apr 2014 23:00:38 -0500
From:	Joe Sylve <joe.sylve@...il.com>
To:	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	linux-arm-kernel@...ts.infradead.org
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] AArch64: TCR_TG1_64K incorrectly sets TCR_EL1 bits [31:30]

Section D7.2.83 TCR_EL1, Translation Control Register (EL1) of the
latest ARM Architecture Reference Manual, ARMv8, for ARMv8-A states
that TCR_EL1 TG1 (bits [31:30]) should be set to 11 for a 64KB
TTBR1_EL1 granule size. The mainline 3.14 kernel incorrectly sets
those bits to 01 (which is a 16KB granule size).

Signed-off-by: Joe Sylve <joe.sylve@...il.com>
---

--- a/arch/arm64/include/asm/pgtable-hwdef.h 2014-04-01 22:13:22.619868978 -0500
+++ b/arch/arm64/include/asm/pgtable-hwdef.h 2014-04-01 22:13:58.071869886 -0500
@@ -121,7 +121,7 @@
 #define TCR_ORGN_MASK ((UL(3) << 10) | (UL(3) << 26))
 #define TCR_SHARED ((UL(3) << 12) | (UL(3) << 28))
 #define TCR_TG0_64K (UL(1) << 14)
-#define TCR_TG1_64K (UL(1) << 30)
+#define TCR_TG1_64K (UL(3) << 30)
 #define TCR_IPS_40BIT (UL(2) << 32)
 #define TCR_ASID16 (UL(1) << 36)
 #define TCR_TBI0 (UL(1) << 37)
--
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