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Open Source and information security mailing list archives
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Date: Mon, 12 May 2008 14:03:17 -0700 (PDT) From: David Miller <davem@...emloft.net> To: mikpe@...uu.se Cc: sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [BUG] 2.6.26-rc1 lost half the RAM on UltraSPARC 5 From: Mikael Pettersson <mikpe@...uu.se> Date: Mon, 12 May 2008 21:06:41 +0200 > David Miller writes: > > We have some existing debugging, which I'd like you to enable on the > > boot command line. Simply add "numa=debug" and that'll get some more > > vebose information. > > > > Please also add the debugging patch below. > > Right, 2.6.26-rc2 plus your debugging patch and booted with numa=debug > prints the following: Thanks, I'll look over this! > One thing that bothers me is the "Memory hole size: 128MB" message. > It wasn't present in 2.6.25, and the amount reported is the exact > same amount of RAM I've lost. Or maybe I'm paranoid :-) It's completely new and harmless. You have memory at 0->128MB and at 256MB->384MB. That gap from 128MB->256MB is the hole is it talking about. It's computed very simply, it is the difference between the highest value physical address of available memory and the total amount of available memory. Don't let it scare you, it's 2GB on one of my machines :-) -- 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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