linux-kernel - Re: [patch 20/26] Xen-paravirt

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Date:	Fri, 16 Mar 2007 09:44:25 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Chris Wright <chrisw@...s-sol.org>
CC:	Ingo Molnar <mingo@...e.hu>, Andi Kleen <ak@....de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, virtualization@...ts.osdl.org,
	xen-devel@...ts.xensource.com, Zachary Amsden <zach@...are.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Ian Pratt <ian.pratt@...source.com>,
	Christian Limpach <Christian.Limpach@...cam.ac.uk>,
	Adrian Bunk <bunk@...sta.de>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [patch 20/26] Xen-paravirt_ops: Core Xen implementation

Chris Wright wrote:
> * Ingo Molnar (mingo@...e.hu) wrote:
>   
>> * Jeremy Fitzhardinge <jeremy@...p.org> wrote:
>>
>>     
>>> Core Xen Implementation
>>>
>>> This patch is a rollup of all the core pieces of the Xen 
>>> implementation, including booting, memory management, interrupts, time 
>>> and so on.
>>>       
>>> --- a/arch/i386/kernel/head.S
>>> +++ b/arch/i386/kernel/head.S
>>> @@ -535,6 +535,10 @@ unhandled_paravirt:
>>>  	ud2
>>>  #endif
>>>  
>>> +#ifdef CONFIG_XEN
>>> +#include "../xen/xen-head.S"
>>> +#endif
>>>       
>> i'd suggest to remove the #ifdef and push it into xen-head.S.
>>     
>
> That's been fixed, the two are built as seperate objects now.
>   

Actually, we tried it but it causes bad kernel images with some
binutils, so it has to be included for now.

>>> @@ -437,9 +437,9 @@ static unsigned long native_store_tr(voi
>>>  
>>>  static void native_load_tls(struct thread_struct *t, unsigned int cpu)
>>>  {
>>> -#define C(i) get_cpu_gdt_table(cpu)[GDT_ENTRY_TLS_MIN + i] = t->tls_array[i]
>>> -	C(0); C(1); C(2);
>>> -#undef C
>>> +	get_cpu_gdt_table(cpu)[GDT_ENTRY_TLS_MIN + 0] = t->tls_array[0];
>>> +	get_cpu_gdt_table(cpu)[GDT_ENTRY_TLS_MIN + 1] = t->tls_array[1];
>>> +	get_cpu_gdt_table(cpu)[GDT_ENTRY_TLS_MIN + 2] = t->tls_array[2];
>>>  }
>>>       
>> this is a cleanup unrelated to the purpose of the patch.
>>     
>
> Sure, will split out.
>   

Already done in Rusty's cleanup patch.

    J
-
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