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Message-Id: <20090401.015350.161544996.davem@davemloft.net> Date: Wed, 01 Apr 2009 01:53:50 -0700 (PDT) From: David Miller <davem@...emloft.net> To: schwidefsky@...ibm.com Cc: tj@...nel.org, mingo@...e.hu, rusty@...tcorp.com.au, tglx@...utronix.de, x86@...nel.org, linux-kernel@...r.kernel.org, hpa@...or.com, lethal@...ux-sh.org, rmk@....linux.org.uk, starvik@...s.com, ralf@...ux-mips.org, cooloney@...nel.org, kyle@...artin.ca, matthew@....cx, grundler@...isc-linux.org, takata@...ux-m32r.org, benh@...nel.crashing.org, rth@...ddle.net, ink@...assic.park.msu.ru, heiko.carstens@...ibm.com Subject: Re: [GIT RFC] percpu: use dynamic percpu allocator as the default percpu allocator From: Martin Schwidefsky <schwidefsky@...ibm.com> Date: Wed, 1 Apr 2009 10:47:37 +0200 > We have thought about that solution as well but it not really a good > one. For a machine with more than 4GB of memory we would either loose > the memory that overlaps with the module area or we'd have to play > nasty remapping tricks. On s390 the kernel image is linked to address 0 > (PAGE_OFFSET==0) and we have a simple 1:1 mapping for all real memory. Flexibility can often cost you a few TLB entries, but that's life :-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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