Date: Sun, 06 Feb 2005 14:21:20 -0700 (MST) From: "M. Warner Losh" <imp@bsdimp.com> To: PeterJeremy@optushome.com.au Cc: freebsd-hackers@freebsd.org Subject: Re: Sharing memory between ithread and userland Message-ID: <20050206.142120.13026592.imp@bsdimp.com> In-Reply-To: <20050205055119.GC44250@cirb503493.alcatel.com.au> References: <20050205055119.GC44250@cirb503493.alcatel.com.au>
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Have you marked the dev_status struct volatile so that the compiler is forced to re-fetch from memory the values? The example you provided didn't have this... Warner
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