Messages in this thread | | | Date | Thu, 24 Jun 2004 20:11:37 -0700 | From | Yasunori Goto <> | Subject | Re: [Lhms-devel] Re: Merging Nonlinear and Numa style memory hotplug |
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I understand this idea at last. Section size of DLPAR of PPC is only 16MB. But kmalloc area of virtual address have to be contigous even if the area is divided 16MB physically. Dave-san's implementation (it was for IA32) was same index between phys_section and mem_section. So, I was confused.
> pfn_to_page(unsigned long pfn) > { > return > &mem_section[phys_section[pfn_to_section(pfn)]].mem_map[section_offset_pfn(pfn)]; > } >
But, I suppose this translation might be too complex. I worry that many person don't like this which is cause of performance deterioration. Should this translation be in common code?
Bye.
-- Yasunori Goto <ygoto at us.fujitsu.com>
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