From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH 7/8] percpu: add __percpu sparse annotations to	hw_breakpoint
Date: Tue, 26 Jan 2010 11:06:10 +0900
Message-ID: <4B5E4E12.7060900@kernel.org>
References: <1264432935-10453-1-git-send-email-tj@kernel.org> <1264432935-10453-8-git-send-email-tj@kernel.org> <20100126001901.GI5087@nowhere> <4B5E3F2C.2010702@zytor.com>
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Cc: Frederic Weisbecker <fweisbec@gmail.com>,
	linux-kernel@vger.kernel.org, axboe@kernel.dk,
	rusty@rustcorp.com.au, akpm@linux-foundation.org,
	ebiederm@xmission.com, tytso@mit.edu, Trond.Myklebust@netapp.com,
	aelder@sgi.com, hch@infradead.org, viro@zeniv.linux.org.uk,
	davem@davemloft.net, netdev@vger.kernel.org, x86@kernel.org,
	mingo@redhat.com, dan.j.williams@intel.com,
	borislav.petkov@amd.com, ying.huang@intel.com, lenb@kernel.org,
	neilb@suse.de, cl@linux-foundation.org
To: "H. Peter Anvin" <hpa@zytor.com>
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Hello,

On 01/26/2010 10:02 AM, H. Peter Anvin wrote:
> A cast (using __typeof__) combined with an address space override?

That still puts the address specification at the wrong level.  The
problem is that the __typeof__ would be an array type which itself
doesn't have address space set but its members are in address space 3.
So, you need to get *inside* the array type def to change that.  :-(

Thanks.

-- 
tejun