Re: [PATCH] more i386 head.S cleanups

[H. Peter Anvin]

Followup to:  <406ECAE7.1020407@xxxxxxxxxxxxxxxxxxx>
By author:    Brian Gerst <bgerst@xxxxxxxxxxxxx>
In newsgroup: linux.dev.kernel
> 
> - Move empty_zero_page and swapper_pg_dir to BSS.  This requires that 
> BSS is cleared earlier, but reclaims over 3k that was lost due to page 
> alignment.
> - Move stack_start, ready, and int_msg, boot_gdt_descr, idt_descr, and 
> cpu_gdt_descr to .data.  They were interfering with disassembly while in 
> .text.
> 

Some of them should be in .rodata instead of .data.

.data should only be used for modifiable numbers.

All in all these patches are a good idea; I had the same thoughts when
I was doing the changes to the boot page tables, but didn't want to
change too much at once.

	-hpa
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