Re: sun4v_data_access_exception on new 2.6.23

["BERTRAND Joël" <joel.bertrand@systella.fr>]

David Miller wrote:
> From: BERTRAND_Joël <joel.bertrand@systella.fr>
> Date: Thu, 11 Oct 2007 20:44:56 +0200
> 
>> 	Hello,
>>
>> 	I have built a 2.6.23 kernel on a T1000 server. I have seen this
>> message on system console :

	David,

> Looking at the trace some more, I'm %99.99999 sure you're using
> gcc-4.2.x to build this and that compiler is known to miscompile SMP
> sparc64 kernels.

	I a first time, I though that is was this trouble, but I can see the 
same bug with debian kernel provided by debian/testing (a 2.6.22 
kernel). I don't know what compiler was used to build debian kernel.

> gcc-4.1.x would never inline __flush_tsb_one() into flush_tsb_user(),
> yet as is evident in your backtraces this is exactly what has
> happened, therefore you must be using gcc-4.2.x or another non-4.1.x
> compiler to build this.

	OK, I will try to rebuild a kernel with gcc-4.1. Thanks for your help.

	Regards,

	JKB