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Date: Fri, 21 Mar 2014 01:37:51 -0700 (PDT) From: ivory <ich7@...-topmail.de> To: linux-kernel@...r.kernel.org Subject: Re: [tip:x86/mm] x86, mm: Move reserving low memory later in initialization This patch seems to make the bios_corruption_check not to cover the lowest 64kB of memory anymore but only the lowest 4kB. Was this deliberate? When I use kernel 3.9 or higher I always get low mem corruption message from the bios corruption checker when I resume from suspend. Below kernel 3.9 I see this boot message: e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved) ... which is the 64kB. But on newer kernels the message changed to: e820: update [mem 0x00000000-0x00000fff] usable ==> reserved ... which is only 4kB. The corrupted low mem areas I get the message for after resuming from suspend is this: Corrupted low memory at c0002d00 (2d00 phys) = 11060000 Corrupted low memory at c0002d04 (2d04 phys) = 80805122 Corrupted low memory at c0002d08 (2d08 phys) = 00860003 How to fix this in kernel 3.9 and higher? Thanks for your help and best regards. -- View this message in context: http://linux-kernel.2935.n7.nabble.com/tip-x86-mm-x86-mm-Move-reserving-low-memory-later-in-initialization-tp601280p827938.html Sent from the Linux Kernel mailing list archive at Nabble.com. -- 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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