Messages in this thread | | | Date | Sat, 9 Dec 2006 22:17:00 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: [RFC] [PATCH] virtual memmap on sparsemem v3 [2/4] generic virtual mem_map on sparsemem |
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On Sat, 9 Dec 2006 13:05:47 +0100 Heiko Carstens <heiko.carstens@de.ibm.com> wrote:
> > +#ifdef CONFIG_SPARSEMEM_VMEMMAP > > +#if (((BITS_PER_LONG/4) * PAGES_PER_SECTION) % PAGE_SIZE) != 0 > > +#error "PAGE_SIZE/SECTION_SIZE relationship is not suitable for vmem_map" > > +#endif > > Why the BITS_PER_LONG/4? Or to put in other words: why not simply > PAGES_PER_SECTION % PAGE_SIZE != 0 ? > sorry, my mistake. What I wanted to do was
32bits arch -- 4 * PAGES_PER_SECTION % PAGE_SIZE 64bits arch -- 8 * PAGES_PER_SECTION % PAGE_SIZE
I'll renew this in the next week.
-Kame
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