Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754741Ab3ITM3W (ORCPT ); Fri, 20 Sep 2013 08:29:22 -0400 Received: from arkanian.console-pimps.org ([212.110.184.194]:46135 "EHLO arkanian.console-pimps.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754467Ab3ITM3V (ORCPT ); Fri, 20 Sep 2013 08:29:21 -0400 Date: Fri, 20 Sep 2013 13:29:15 +0100 From: Matt Fleming To: Borislav Petkov Cc: Dave Young , X86 ML , LKML , Borislav Petkov , Matt Fleming , Matthew Garrett , "H. Peter Anvin" , James Bottomley , Vivek Goyal , linux-efi@vger.kernel.org Subject: Re: [PATCH 00/11] EFI runtime services virtual mapping Message-ID: <20130920122915.GB21381@console-pimps.org> References: <1379602494-26684-1-git-send-email-bp@alien8.de> <20130920072904.GA21922@dhcp-16-126.nay.redhat.com> <20130920090544.GA9574@pd.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130920090544.GA9574@pd.tnic> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1450 Lines: 45 On Fri, 20 Sep, at 11:05:44AM, Borislav Petkov wrote: > On Fri, Sep 20, 2013 at 03:29:04PM +0800, Dave Young wrote: > > Just tested this series, for 1st kernel It boots ok in qemu+ovmf. But > > it immediately reboot on my Thinkpad T420. Unfortunately there's no > > way to debug this very early problem because there's no serial port > > also earlyprintk does not work for efi boot. No usb debug as well on > > this machine. I will test it when I go back to work after the china > > holiday. > > Hmm, I'm booting with the efi boot stub, how do you do it? Dave, could you try this patch? --- diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index 06e71c2..9bcc15c 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -207,6 +207,8 @@ ENTRY(startup_64) jmp preferred_addr ENTRY(efi_pe_entry) + movq %cr3, %r15 + movq %r15, efi_scratch+16(%rip) mov %rcx, %rdi mov %rdx, %rsi pushq %rdi @@ -219,6 +221,8 @@ ENTRY(efi_pe_entry) popq %rdi ENTRY(efi_stub_entry) + movq %cr3, %r15 + movq %r15, efi_scratch+16(%rip) call efi_main movq %rax,%rsi cmpq $0,%rax -- Matt Fleming, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/