x86: cacheline_align tss_struct
The manual padding to align on cacheline size only worked in 32 bit
In 64 bit the structure was not aligned and contained wasted space.
use the compiler ____cachline_aligned to save space & properly align
this structure.
x86_64_default size goes from 9136 -> 8960
x86_64_AMD size goes from 9136 -> 8896
built & running on 2.6.26-rc8.
Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h
index 5591052..4ab2ede 100644
--- a/include/asm-x86/processor.h
+++ b/include/asm-x86/processor.h
@@ -263,15 +263,11 @@
struct thread_struct *io_bitmap_owner;
/*
- * Pad the TSS to be cacheline-aligned (size is 0x100):
- */
- unsigned long __cacheline_filler[35];
- /*
* .. and then another 0x100 bytes for the emergency kernel stack:
*/
unsigned long stack[64];
-} __attribute__((packed));
+} ____cacheline_aligned;
DECLARE_PER_CPU(struct tss_struct, init_tss);