From: Andi Kleen <ak@suse.de>
To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
Cc: Gerd Knorr <kraxel@suse.de>,
xen-devel@lists.xensource.com, kevin.tian@intel.com
Subject: Re: [patch] pae: tlbflush linear page table updates
Date: 12 Aug 2005 11:20:42 +0200 [thread overview]
Message-ID: <p73y877340l.fsf@verdi.suse.de> (raw)
In-Reply-To: <2636b1d92088eaa5eb1c4e84ef120688@cl.cam.ac.uk>
Keir Fraser <Keir.Fraser@cl.cam.ac.uk> writes:
>
> The compiler will never alias inputs. In this case it is forced to
> alias the output constraint with input retval, and so the output
> cannot alias with any other input (which would be an error).
Actually it will sometimes. That is what the "early clobber" (&)
prevents. Perhaps it should be used here.
-Andi
next prev parent reply other threads:[~2005-08-12 9:20 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-12 9:02 [patch] pae: tlbflush linear page table updates Tian, Kevin
2005-08-12 9:17 ` Keir Fraser
2005-08-12 9:20 ` Andi Kleen [this message]
2005-08-12 9:49 ` Keir Fraser
-- strict thread matches above, loose matches on Subject: below --
2005-08-12 9:37 Tian, Kevin
2005-08-12 9:56 ` Andi Kleen
2005-08-12 10:18 ` Keir Fraser
2005-08-12 9:17 Tian, Kevin
2005-08-08 14:51 Gerd Knorr
2005-08-08 16:52 ` Keir Fraser
2005-08-09 7:54 ` Gerd Knorr
2005-08-09 8:06 ` Keir Fraser
2005-08-09 10:53 ` Keir Fraser
2005-08-09 13:52 ` Gerd Knorr
2005-08-09 15:44 ` Gerd Knorr
2005-08-09 16:14 ` Keir Fraser
2005-08-10 10:22 ` Gerd Knorr
2005-08-10 10:28 ` Gerd Knorr
2005-08-10 10:54 ` Keir Fraser
2005-08-10 12:33 ` Gerd Knorr
2005-08-10 13:01 ` Gerd Knorr
2005-08-10 13:11 ` Keir Fraser
2005-08-10 13:57 ` Gerd Knorr
2005-08-10 10:53 ` Keir Fraser
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