Re: [PATCH 9/9] tracing: MIPS: cleanup of the address space checking

To:	Ralf Baechle <ralf@linux-mips.org>
Subject:	Re: [PATCH 9/9] tracing: MIPS: cleanup of the address space checking
From:	David Daney <david.s.daney@gmail.com>
Date:	Thu, 13 May 2010 09:17:13 -0700
Cc:	Wu Zhangjin <wuzhangjin@gmail.com>, linux-mips <linux-mips@linux-mips.org>
Dkim-signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:cc:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=JjWim9+v1ofwPtBhgBPwkynPiwC3QPhKXWSGM+N5fKQ=; b=h6jSIAbJrF+USEzY7VJuWFe8H0/MLX45qcxkC9GGctMO7fVZKhI2/ksjOoM+8A3CGX Z+EKkV33wiyLAfcT6rDJH+LYgIXHKdWEA8pT5mzRgxSfdY/Q8QzdoKFdqcUH0kUy0KCL 62Pg+TuqE4HVxWsfDU75+N7KDgplOqdgJJMlk=
Domainkey-signature:	a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=RdAo5f350ldPQ+AB12aEuKVKqz99YHbkxmFf+d3WkqY4tEdtG4awxAG4Y2F/O/p6xk kjPCXNBXw5MwIbk+fkHEHQgGwjgW27GuK6IKed5rhMW2jBNI+jiQPSVidyLGBYk//l/L 60TqDzeyskbpm/5ZyZMbcLPzBuq3eAqsB7hsw=
In-reply-to:	<20100513161357.GA5810@linux-mips.org>
Original-recipient:	rfc822;linux-mips@linux-mips.org
References:	<cover.1273669419.git.wuzhangjin@gmail.com> <86404e31ca5c4c33b785bad7f6223ac775f4f879.1273669419.git.wuzhangjin@gmail.com> <4BEAE19D.40502@gmail.com> <20100513161357.GA5810@linux-mips.org>
Sender:	linux-mips-bounce@linux-mips.org
User-agent:	Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100330 Fedora/3.0.4-1.fc12 Thunderbird/3.0.4

On 05/13/2010 09:13 AM, Ralf Baechle wrote:

On Wed, May 12, 2010 at 10:13:01AM -0700, David Daney wrote:

The kernel is always compiled with -msym32, so the patch is a bit pointless.


Not quite true.  Some systems only have enough memory for the exception
vectors in the low 512MB of physical address space, so these can't use
an -msym32 kernel.

My general impression is that hardware designers "design" address maps by
throwing darts over their shoulder after a few pints ;-)

Well it was mostly a rhetorical point. Of course -msym32 is notuniversal, but it is more common than not I would say. Because of that,we should take a few more minutes and figure out how to make ftrace workwell with it.


David Daney

<Prev in Thread]	Current Thread	[Next in Thread>
[PATCH 4/9] tracing: MIPS: mcount.S: cleanup of the comments, (continued) [PATCH 4/9] tracing: MIPS: mcount.S: cleanup of the comments, Wu Zhangjin [PATCH 3/9] tracing: MIPS: mcount.S: cleanup the arguments of prepare_ftrace_return, Wu Zhangjin [PATCH 5/9] tracing: MIPS: Fixup of the 32bit support with -mmcount-ra-address, Wu Zhangjin [PATCH 6/9] tracing: MIPS: cleanup of the instructions, Wu Zhangjin [PATCH 7/9] tracing: MIPS: Reduce the overhead of dynamic Function Tracer, Wu Zhangjin [PATCH 8/9] tracing: MIPS: cleanup of function graph tracer, Wu Zhangjin [PATCH 9/9] tracing: MIPS: cleanup of the address space checking, Wu Zhangjin Re: [PATCH 9/9] tracing: MIPS: cleanup of the address space checking, David Daney Re: [PATCH 9/9] tracing: MIPS: cleanup of the address space checking, Wu Zhangjin Re: [PATCH 9/9] tracing: MIPS: cleanup of the address space checking, Ralf Baechle Re: [PATCH 9/9] tracing: MIPS: cleanup of the address space checking, David Daney <=

Previous by Date:	Re: [PATCH 9/9] tracing: MIPS: cleanup of the address space checking, Ralf Baechle
Next by Date:	RE: [RFC PATCH 1/2] The Device Tree Patch for MIPS, Dezhong Diao (dediao)
Previous by Thread:	Re: [PATCH 9/9] tracing: MIPS: cleanup of the address space checking, Ralf Baechle
Next by Thread:	RE: [PATCH resend] Apply kmap_high_get on MIPS, Dezhong Diao (dediao)
Indexes:	[Date] [Thread] [Top] [All Lists]