linux-kernel - Re: [Xen-devel] Re: [PATCH 00 of 36] x86/paravirt: groundwork for 64-bit Xen support

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Date:	Sun, 29 Jun 2008 22:32:26 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Yinghai Lu <yhlu.kernel@...il.com>
CC:	Ingo Molnar <mingo@...e.hu>, Nick Piggin <npiggin@...e.de>,
	Mark McLoughlin <markmc@...hat.com>,
	xen-devel <xen-devel@...ts.xensource.com>,
	Eduardo Habkost <ehabkost@...hat.com>,
	Vegard Nossum <vegard.nossum@...il.com>,
	Stephen Tweedie <sct@...hat.com>, x86@...nel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [Xen-devel] Re: [PATCH 00 of 36] x86/paravirt: groundwork for
 64-bit Xen support

Yinghai Lu wrote:
> On Sun, Jun 29, 2008 at 8:02 PM, Jeremy Fitzhardinge <jeremy@...p.org> wrote:
>   
>> Ingo Molnar wrote:
>>     
>>> with this config:
>>>
>>>  http://redhat.com/~mingo/misc/config-Sun_Jun_29_10_29_11_CEST_2008.bad
>>>
>>> i've saved the merged 2.6.26-rc8-tip-00241-gc6c8cb2-dirty tree into
>>> tip/tmp.x86.xen-64bit.Sun_Jun_29_10 and pushed it out, so you can test that
>>> exact version.
>>>       
>> Looks like the setup.c unification missed the early_ioremap init from the
>> early_ioremap unification.  Unconditionally call early_ioremap_init().
>>
>> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
>>
>> diff -r 5c26177fdf8c arch/x86/kernel/setup.c
>> --- a/arch/x86/kernel/setup.c   Sun Jun 29 16:57:52 2008 -0700
>> +++ b/arch/x86/kernel/setup.c   Sun Jun 29 19:57:00 2008 -0700
>> @@ -523,11 +523,12 @@
>>        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;
>>     
>
> it could be wrong? do we need that for 64 bit?

Yes.  I unified the early_ioremap implementations by making 64-bit use 
the 32-bit one.

    J

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