From 1da3e2d35573b23ae38aa0f1b096cb978ecef445 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Thu, 21 Apr 2011 21:45:08 -0400 Subject: [PATCH] ARM: zImage: make sure the stack is 64-bit aligned commit 3bd2cbb95543acf44fe123eb9f038de54e655eb4 upstream. With ARMv5+ and EABI, the compiler expects a 64-bit aligned stack so instructions like STRD and LDRD can be used. Without this, mysterious boot failures were seen semi randomly with the LZMA decompressor. While at it, let's align .bss as well. Signed-off-by: Nicolas Pitre Tested-by: Shawn Guo Acked-by: Tony Lindgren Signed-off-by: Greg Kroah-Hartman --- arch/arm/boot/compressed/Makefile | 2 +- arch/arm/boot/compressed/vmlinux.lds.in | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 0a8f748e506..e1bea82284a 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -59,7 +59,7 @@ ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT) ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS) else ZTEXTADDR := 0 -ZBSSADDR := ALIGN(4) +ZBSSADDR := ALIGN(8) endif SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/ diff --git a/arch/arm/boot/compressed/vmlinux.lds.in b/arch/arm/boot/compressed/vmlinux.lds.in index 366a924019a..7ece7056ba0 100644 --- a/arch/arm/boot/compressed/vmlinux.lds.in +++ b/arch/arm/boot/compressed/vmlinux.lds.in @@ -57,6 +57,7 @@ SECTIONS .bss : { *(.bss) } _end = .; + . = ALIGN(8); /* the stack must be 64-bit aligned */ .stack : { *(.stack) } .stab 0 : { *(.stab) } -- 2.11.4.GIT