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a question about directive .fill


Hi, All !
What the difference between .fill 1024,4,0 and .fill 4096,1,0 ?

Why  are there the two directives in <arch/i386/kernel/head.S> file of
linux kernel 2.6.11?

414 .section ".bss.page_aligned","w"
415 ENTRY(swapper_pg_dir)
416         .fill 1024,4,0
417 ENTRY(empty_zero_page)
418         .fill 4096,1,0

Thanks!

Regards,
Cheng


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