Date: Thu, 18 Apr 2013 21:16:21 +0800 From: Bei Guan <gbtju85@gmail.com> To: "Justin T. Gibbs" <gibbs@freebsd.org> Cc: soc-status <soc-status@freebsd.org> Subject: =?GB2312?Q?Re=3A_Mentor_of_the_Project_=22PCI_frontend_XEN_PV_drive?= =?GB2312?Q?r=22=A3=BF?= Message-ID: <CAEQjb-SDrbLQPfyPKD-YXAOFrWhtf0=4s2z27M1W8U_9eGOFew@mail.gmail.com> In-Reply-To: <CAEQjb-R1C17f4t_eoe5gYkqSv%2BJD%2Bmahr%2Bx9qXBJ%2BNKsJLSJ5A@mail.gmail.com> References: <CAEQjb-RV30H9h8_tO%2BC0SkWAOi0DNF3G9xzpNFkj1_OKR%2ByLkw@mail.gmail.com> <920A79FE-8C56-4D26-8611-3CD48602FC3B@freebsd.org> <CAEQjb-QGktoBNHAF4JqwyzJy01dO49b59chJ4k6WCrs_8FYnhQ@mail.gmail.com> <7AB96913-9118-4298-B183-A3D5EBC6F209@freebsd.org> <CAEQjb-R1C17f4t_eoe5gYkqSv%2BJD%2Bmahr%2Bx9qXBJ%2BNKsJLSJ5A@mail.gmail.com>
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--f46d041c45baa6b51504daa268a0 Content-Type: text/plain; charset=ISO-8859-1 The attachment is the boot output of the 32-bit FreeBSD compiled with XENHVM config. 2013/4/18 Bei Guan <gbtju85@gmail.com> > > > > 2013/4/16 Justin T. Gibbs <gibbs@freebsd.org> > > On Apr 12, 2013, at 3:02 AM, Bei Guan <gbtju85@gmail.com> wrote: >> >> > Thank you for your reply. >> > >> > I think it's also a good project for me to write a SCSI or USB PV >> frontend for FreeBSD. I'm interest in Xen and have done some development >> about Xen PV and HVM, but I didn't do any development on FreeBSD. As to >> this project, where should I start? Is there any other similar FreeBSD >> project I can refer to? >> >> Front-end drivers for network, block, and control already exist and >> should serve as a good starting point for the creation of another PV driver. >> >> I've also updated the ideas page to include more information about our >> existing XEN implementation and what will be required for these projects. >> >> > In order to write a SCSI or USB PV driver, do we need the Xen PV >> drivers in FreeBSD, such as event channel, hypercalls, xenbus, and so on? >> >> Yes, FreeBSD already has support for all XenBus APIs needed to write >> these drivers. See "sys/xen" and "sys/dev/xen" in the FreeBSD kernel >> source tree. >> >> > You said the "drivers can be developed using an HVM guest", can you >> give me more information about it? >> >> Typically, you install FreeBSD using standard install media as a full HVM >> guest on a system running Xen. Then compile a custom kernel using the >> XENHVM config file in order to activate the existing PV drivers. >> > Hi Justin, > > Does this project need to provide USB/SCSI PV drivers to both 32-bit and > 64-bit FreeBSD? > I've compiled the FreeBSD 8.3 (i386) as Xen DomU with the XENHVM config. > But, It cannot boot successfully. The screenshot is attached. > According to the page https://wiki.freebsd.org/FreeBSD/Xen , 32-bit > FreeBSD should work when compiled with XENHVM config. > > I will try the 64-bit FreeBSD. However, if the FreeBSD boot successfully > (compiled with XENHVM config), how can we know it really uses the PV > drivers instead of the native drivers? > > > Thanks, > Bei Guan > > > >> >> -- >> Justin >> >> > > -- Best Regards, Bei Guan --f46d041c45baa6b51504daa268a0--
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