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authorH. Peter Anvin <hpa@zytor.com>2009-04-30 17:59:36 -0700
committerH. Peter Anvin <hpa@zytor.com>2009-05-08 17:16:21 -0700
commit0b4eb462da10f832b28d518abffa4d77805928a0 (patch)
treeb92e21993c1f26143811de87dd8988213e823582 /arch/x86/boot
parent83c4832683bc8ebcd1687b3c0bf3ba1ab253dd4f (diff)
x86, boot: align the .bss section in the decompressor
Aligning the .bss section makes it trivial to use large operation sizes for moving the initialized sections and clearing the .bss. The alignment chosen (L1 cache) is somewhat arbitrary, but should be large enough to avoid all known performance traps and small enough to not cause troubles. [ Impact: trivial performance enhancement, future patch prep ] Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/boot')
-rw-r--r--arch/x86/boot/compressed/vmlinux.lds.S1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/vmlinux.lds.S b/arch/x86/boot/compressed/vmlinux.lds.S
index 0d26c92d3c7..dbe515e13fe 100644
--- a/arch/x86/boot/compressed/vmlinux.lds.S
+++ b/arch/x86/boot/compressed/vmlinux.lds.S
@@ -42,6 +42,7 @@ SECTIONS
*(.data.*)
_edata = . ;
}
+ . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
.bss : {
_bss = . ;
*(.bss)