linux-kernel - Re: next-0704: x86

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Message-ID: <20080704142409.GA18824@elte.hu>
Date:	Fri, 4 Jul 2008 16:24:09 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Alexander Beregalov <a.beregalov@...il.com>
Cc:	linux-next@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com
Subject: Re: next-0704: x86_64 panics on booting


* Alexander Beregalov <a.beregalov@...il.com> wrote:

> Hi
> 
> 
> Booting the kernel.
> 
> Kernel alive
> Kernel really alive
> PANIC: early exception 0e rip 10:ffffffff80604f47 error 2 cr2 ffffffffff300000
> 
> It is x86_64 SMP (opteron).

does the patch below fix it?

	Ingo

-------------->
commit 181b3601a1a7d2ac3ace6b23cb3204450a4f9a27
Author: Jeremy Fitzhardinge <jeremy@...p.org>
Date:   Sun Jun 29 20:02:44 2008 -0700

    x86: setup_arch() && early_ioremap_init()
    
    Looks like the setup.c unification missed the early_ioremap init from
    the early_ioremap unification.  Unconditionally call early_ioremap_init().
    
    needed for "x86/paravirt: groundwork for 64-bit Xen support".
    
    Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
    Cc: Nick Piggin <npiggin@...e.de>
    Cc: Mark McLoughlin <markmc@...hat.com>
    Cc: xen-devel <xen-devel@...ts.xensource.com>
    Cc: Eduardo Habkost <ehabkost@...hat.com>
    Cc: Vegard Nossum <vegard.nossum@...il.com>
    Cc: Stephen Tweedie <sct@...hat.com>
    Cc: Yinghai Lu <yhlu.kernel@...il.com>
    Signed-off-by: Ingo Molnar <mingo@...e.hu>

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index fb318ed..caec79f 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -523,12 +523,13 @@ void __init setup_arch(char **cmdline_p)
 	memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
 	pre_setup_arch_hook();
 	early_cpu_init();
-	early_ioremap_init();
 	reserve_setup_data();
 #else
 	printk(KERN_INFO "Command line: %s\n", boot_command_line);
 #endif
 
+	early_ioremap_init();
+
 	ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev);
 	screen_info = boot_params.screen_info;
 	edid_info = boot_params.edid_info;

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