From mboxrd@z Thu Jan 1 00:00:00 1970 From: Borislav Petkov Subject: Re: [BUG] Linux 3.14 fails to boot with new EFI changes Date: Thu, 6 Feb 2014 00:15:40 +0100 Message-ID: <20140205231540.GB6364@pd.tnic> References: <20140128200754.GZ18196@sgi.com> <20140128225905.GN815@pd.tnic> <20140128234036.GB18196@sgi.com> <20140129141822.GC24887@pd.tnic> <20140130221950.GJ3105@sgi.com> <52EAD0F2.7090101@zytor.com> <20140131100722.GA21873@pd.tnic> <20140131140220.GC22498@sgi.com> <20140131142318.GC21873@pd.tnic> <20140205214536.GT3034@sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Content-Disposition: inline In-Reply-To: <20140205214536.GT3034-sJ/iWh9BUns@public.gmane.org> Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Alex Thorlton Cc: Russ Anderson , "H. Peter Anvin" , Matt Fleming , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-efi@vger.kernel.org On Wed, Feb 05, 2014 at 03:45:36PM -0600, Alex Thorlton wrote: > While working on an answer to this question, I ran across another issue > on some newer hardware, that looks like it's definitely related to this > problem, and might be the root cause. > > When booting on a UV2 we die in efi_enter_virtual_mode: > > BUG: unable to handle kernel paging request at 0000008f7e848020 > IP: [<000000007dadb6a9>] 0x7dadb6a8 > PGD 0 That looks very much like this other issue we're debugging right now: http://marc.info/?l=linux-kernel&m=139115794830637 > CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.11.0-medusa-00038-gd2f7cbe #821 ... > Let me know what other information you need and I'll get it to you ASAP. You could try to boot latest linus + Matt's 'next' branch ontop and see whether it is exploding. I'd venture a guess and say yes but a whole dmesg with CONFIG_EFI_PGT_DUMP and pagetable dump might still give us some clues. Thanks. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. --