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Subject: __pa(vmalloc()) considered harmful?
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Date: Tue, 03 Sep 2002 20:07:05 -0500
From: Jeff Dike <jdike@karaya.com>
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It sure doesn't make sense to me, but that's effectively what 
elf_kcore_store_hdr does:

	for (m=vmlist; m; m=m->next) {
		[ snip ]
		phdr->p_paddr	= __pa(m->addr);
		[ snip ]
	}

This doesn't actually hurt when __pa(addr) == addr - $SOMETHING, but it
does produce meaningless numbers.

It does hurt when your __pa() is something more complicated and it can
tell that it's being asked to do something stupid.

So what's p_paddr supposed to be, anyway?

				Jeff

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