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Date: Wed, 13 Jan 2010 23:23:48 +0100 From: Andi Kleen <andi@...stfloor.org> To: "H. Peter Anvin" <hpa@...or.com> Cc: Andi Kleen <andi@...stfloor.org>, Yinghai Lu <yinghai@...nel.org>, Suresh Siddha <suresh.b.siddha@...el.com>, Linus Torvalds <torvalds@...ux-foundation.org>, "ananth@...ibm.com" <ananth@...ibm.com>, Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>, Andrew Morton <akpm@...ux-foundation.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH -v2 5/5] x86: use dmi check to treat disabled cpus as hotplug cpus. > There are configurations in which percpu memory is in the megabytes. There used to be some like this (with some broken debug code), but they got all fixed i believe to only allocate on real cpu hotplug. If not the right way is to fix them, not add DMI blacklists. Beside when you enable debug code you probably don't care about a few MB too much. > This is exactly why we need high water mark allocation of percpu memory: No we just need to fix any percpu pigs (if there are really any left, I did a couple of patches some time ago) "Don't work around broken code -- fix it" -Andi -- ak@...ux.intel.com -- Speaking for myself only. -- 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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