Date: Wed, 24 Feb 2010 09:43:20 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: Jacques Fourie <jacques.fourie@gmail.com> Subject: Re: VirtualBox and vtophys Message-ID: <201002240943.20648.jhb@freebsd.org> In-Reply-To: <be2f52431002240341g7eea52f3tc751d59b2a51806@mail.gmail.com> References: <be2f52431002240341g7eea52f3tc751d59b2a51806@mail.gmail.com>
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On Wednesday 24 February 2010 6:41:31 am Jacques Fourie wrote: > I've noticed that my virtualbox vboxdrv.ko started crashing after > updating my 8.0-stable install. The crash occurs when vboxdrv calls > vtophys() on a userland virtual address. Prior to r202894 this was > working fine. Modifying pmap_kextract() to use vtopte() for non-kernel > virtual adresses fixes the problem. Is it intended for vtophys() to > still work on userland virtual addresses? Use pmap_extract(pmap, ...) for user addresses. Granted, that is only reliable if the user pages have been wired in some fashion. -- John Baldwin
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