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| author |   Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-04-21 21:45:08 -0400 |
|---|---|---|
| committer |   Nicolas Pitre <nico@fluxnic.net> | 2011-05-06 23:55:49 -0400 |
| commit | 3bd2cbb95543acf44fe123eb9f038de54e655eb4 (patch) | |
| tree | 3997d786c250cef69fc1977f2ab4ad1aba2f8197 /arch/arm | |
| parent | Linux 2.6.39-rc1 (diff) | |
| download | linux-dev-3bd2cbb95543acf44fe123eb9f038de54e655eb4.tar.xz linux-dev-3bd2cbb95543acf44fe123eb9f038de54e655eb4.zip | |
ARM: zImage: make sure the stack is 64-bit aligned
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 <nicolas.pitre@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>
CC: stable@kernel.org
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/boot/compressed/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/vmlinux.lds.in | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 8ebbb511c783..0c6852d93506 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -74,7 +74,7 @@ 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 5309909d7282..ea80abe78844 100644 --- a/arch/arm/boot/compressed/vmlinux.lds.in +++ b/arch/arm/boot/compressed/vmlinux.lds.in @@ -54,6 +54,7 @@ SECTIONS .bss : { *(.bss) } _end = .; + . = ALIGN(8); /* the stack must be 64-bit aligned */ .stack : { *(.stack) } .stab 0 : { *(.stab) } |