linux-kernel - Re: 2.6.39.1 immediately reboots/resets on EFI system

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Message-ID: <4DF259B2.9070403@gmail.com>
Date:	Fri, 10 Jun 2011 19:51:46 +0200
From:	Maarten Lankhorst <m.b.lankhorst@...il.com>
To:	Matthew Garrett <mjg59@...f.ucam.org>
CC:	Yinghai Lu <yinghai@...nel.org>, Jim Bos <jim876@...all.nl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...e.de>,
	"H. Peter Anvin" <hpa@...ux.intel.com>
Subject: Re: 2.6.39.1 immediately reboots/resets on EFI system

Well,

Op 10-06-11 18:47, Matthew Garrett schreef:
> So this is obviously even more of a hack, but before you check whether 
> the memblock has already been reserved could you __check_region it as 
> well? That ought to avoid us touching the kernel. I've got a patch for 
> grub that'll avoid the situation where we load the kernel on top of an 
> existing resource and I'll port that to grub2, but that's still going to 
> be awkward for existing bootloaders.
>
Erm, __check_region calls __requestion_region which does a kzalloc,
if I call __check_region it doesn't boot, probably because of that.

Do you want me to manually run through iomem_resource? Is it even available up at that point?

~Maarten
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