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Message-ID: <87wr2nsbvi.fsf@xmission.com> Date: Sun, 01 Jul 2012 09:08:01 -0700 From: ebiederm@...ssion.com (Eric W. Biederman) To: "H. Peter Anvin" <hpa@...or.com> Cc: hacklu <embedway.linux@...il.com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH 2/2] x86, boot: Optimize the elf header handling. "H. Peter Anvin" <hpa@...or.com> writes: > On 07/01/2012 08:04 AM, H. Peter Anvin wrote: >> >> Sadly, this patch breaks the boot with of of my standard configurations >> (attached)... it goes into an infinite reboot loop. This was the first >> config I tested, so it might very well break more. >> > > Some more investigation: the boot crashes because the .data..percpu > segment is all zero -- since this includes the GDT, we die quickly and > dramatically only a handful of instructions into head_64.S. > > I'm dropping this patchset for now. Fair enough. But ugh. Can you point me at your config? Can you tell me your linker version? I tested this originally on both x86_64 and i386, and it worked both places for me. I want to stair at that failure mode. I am wondering what happened in your configuration that is different from mine. Perhaps a linker bug? A subtle conflict with something else? The patch didn't do anything that should have affectected per cpu sections... Eric -- 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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