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From: "David S. Miller" <davem@redhat.com>
To: torvalds@transmeta.com
Cc: bcrl@redhat.com, mingo@redhat.com, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: Re: [RFC] atomic pte updates and pae changes, take 2
Date: Sat, 14 Oct 2000 01:26:48 -0700	[thread overview]
Message-ID: <200010140826.BAA19023@pizda.ninka.net> (raw)
In-Reply-To: <Pine.LNX.4.10.10010131841120.962-100000@penguin.transmeta.com> (message from Linus Torvalds on Fri, 13 Oct 2000 18:43:47 -0700 (PDT))

   I dislike the "__HAVE_ARCH_xxx" approach, and considering that most
   architectures will probably want to do something specific anyway I
   wonder if we should get rid of that and just make architectures
   have their own code.

Most software-based TLB refill systems could (and sparc64 will) make
all ref/mod bit updates occur in the kernel software fault path so
that none of this special synchronization is necessary.

In such cases it might be nice to have a generic version that all such
ports can share by just not defining __HAVE_ARCH_xxx.

Sure it's a bit ugly, but it does allow code sharing, so it probably
at least deserves a chance :-)

Later,
David S. Miller
davem@redhat.com
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  reply	other threads:[~2000-10-14  8:26 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2000-10-14  0:17 Ben LaHaise
2000-10-14  1:43 ` Linus Torvalds
2000-10-14  8:26   ` David S. Miller [this message]
2000-10-15 12:07   ` Ingo Molnar
2000-10-14 13:33 ` Stephen Tweedie
2000-10-15 12:01   ` Ingo Molnar
2000-10-19 20:16 ` oopses in test10-pre4 (was Re: [RFC] atomic pte updates and pae changes, take 3) Linus Torvalds
2000-10-20  5:44   ` Ben LaHaise
2000-10-20 17:18     ` Linus Torvalds

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