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Date: Thu, 6 Dec 2007 10:55:35 +0100 (CET) From: Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com> To: Yasunori Goto <y-goto@...fujitsu.com> cc: Geoff Levand <geoffrey.levand@...sony.com>, Andrew Morton <akpm@...ux-foundation.org>, miltonm@....com, clameter@....com, apw@...dowen.org, linux-kernel@...r.kernel.org Subject: Re: PS3: trouble with SPARSEMEM_VMEMMAP and kexec On Thu, 6 Dec 2007, Geert Uytterhoeven wrote: > On Thu, 6 Dec 2007, Yasunori Goto wrote: > > > I'll try Milton's suggestion to pre-allocate the memory early. It seems > > > that should work as long as nothing else before the hot-plug mem is added > > > needs a large chunk. > > > > Hello. Geoff-san. Sorry for late response. > > > > Could you tell me the value of the following page_size calculation > > in vmemmap_populate()? I think this page_size may be too big value. > > > > ------ > > int __meminit vmemmap_populate(struct page *start_page, > > unsigned long nr_pages, int node) > > : > > : > > unsigned long page_size = 1 << mmu_psize_defs[mmu_linear_psize].shift; > > : > > ------- > > 24 MiB Bummer, messing up bits and MiB. 16 MiB of course. With kind regards, Geert Uytterhoeven Software Architect Sony Network and Software Technology Center Europe The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium Phone: +32 (0)2 700 8453 Fax: +32 (0)2 700 8622 E-mail: Geert.Uytterhoeven@...ycom.com Internet: http://www.sony-europe.com/ Sony Network and Software Technology Center Europe A division of Sony Service Centre (Europe) N.V. Registered office: Technologielaan 7 · B-1840 Londerzeel · Belgium VAT BE 0413.825.160 · RPR Brussels Fortis Bank Zaventem · Swift GEBABEBB08A · IBAN BE39001382358619
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