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Re: [PATCH] fast path for rdhwr emulation for TLS

To: Atsushi Nemoto <>
Subject: Re: [PATCH] fast path for rdhwr emulation for TLS
From: "Maciej W. Rozycki" <>
Date: Mon, 11 Sep 2006 18:53:29 +0100 (BST)
In-reply-to: <>
Original-recipient: rfc822;
References: <> <> <> <>
On Mon, 11 Sep 2006, Atsushi Nemoto wrote:

> >  What's wrong with just letting a TLB fault happen?
> It might add a little overhead to usual TLB refill handling.  The
> overhead might be neglectable, but I'm not sure.

 There is no need to change the refill handler -- only the general TLBL 
exception has to be modified.  And this one may be not too critical -- the 
change required is in the path to mark pages accessed.  Is the path 
frequent enough to seek a complex solution while a simple one would just 


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