From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Mosberger Date: Fri, 09 May 2003 20:25:06 +0000 Subject: Re: [Linux-ia64] Re: [PATCH] head.S fix for unusual load addrs Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org >>>>> On Fri, 9 May 2003 15:02:47 -0500 (CDT), Jack Steiner said: >> Would there be a downside to this on SGI's machines? Jack> I dont see any significant problems. It actually seems easy. Good. Jack> I think we still need to use __tpa() for addresses assigned by Jack> the loader. The standard __pa() macros wont work in region 5. That's why I don't mind: nobody can use __pa() on region 5 anyhow, so using something different (page table walk or __tpa()) is OK. I was real uneasy with having a "magic" address range inside region 7, where __pa() wouldn't work. But in region 5, no problem. It might be good to call __tpa() something different: it's too close to __pa() and the difference may easily be overlooked. For example, ia64_tpa() would make it obvious that we're talking about an ia64 instruction. --david