linux-kernel - [PATCH] ARM: Make pgtbl macro more robust

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Date:	Mon,  6 Jan 2014 08:39:53 -0500
From:	Christopher Covington <cov@...eaurora.org>
To:	Russell King <linux@....linux.org.uk>
Cc:	Stephen Boyd <sboyd@...eaurora.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
	Christopher Covington <cov@...eaurora.org>
Subject: [PATCH] ARM: Make pgtbl macro more robust

The pgtbl macro couldn't handle the specific
(TEXT_OFFSET - PG_DIR_SIZE) value that the combination of
MSM platforms and LPAE created:

head.S:163: Error: invalid constant (203000) after fixup

Regardless of whether this combination of configuration options
will work on currently support platforms at run time, make it
at least assemble properly.

Signed-off-by: Christopher Covington <cov@...eaurora.org>
---
 arch/arm/kernel/head.S | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 9cf6063..af30cac 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -52,7 +52,8 @@
 	.equ	swapper_pg_dir, KERNEL_RAM_VADDR - PG_DIR_SIZE
 
 	.macro	pgtbl, rd, phys
-	add	\rd, \phys, #TEXT_OFFSET - PG_DIR_SIZE
+	add	\rd, \phys, #TEXT_OFFSET
+	sub	\rd, \rd, #PG_DIR_SIZE
 	.endm
 
 /*
-- 
Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by the Linux Foundation.

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