Date: Tue, 29 May 2007 00:54:58 +0000 (UTC) From: Tor Egge <Tor.Egge@cvsup.no.freebsd.org> To: attilio@freebsd.org Cc: jroberson@chesapeake.net, current@freebsd.org Subject: Re: Panic on -CURRENT after LDT changes Message-ID: <20070529.005458.74657868.Tor.Egge@cvsup.no.freebsd.org> In-Reply-To: <3bbf2fe10705281553n49ed5408qde560f53931b7d71@mail.gmail.com> References: <20070528.162023.41711345.Tor.Egge@cvsup.no.freebsd.org> <465B4450.90800@FreeBSD.org> <3bbf2fe10705281553n49ed5408qde560f53931b7d71@mail.gmail.com>
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> Tor, > I've updated the patch. Can you please redownload it and test/review: > http://users.gufi.org/~rookie/works/patches/schedlock/ldt2.diff Looking at the diff between the old ldt2.diff and the new ldt2.diff, the change seems reasonable. i386_ldt_grow() has another problem if multiple processes share a user LDT. The old ldt is freed while still referenced by the CPUs. This might cause problems, e.g. with threaded linux binaries. - Tor Egge
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