Hi, Since we're going to see VIMAGE (partly) committed into HEAD anytime now, perhaps it would be a good time to make available some clear developer documentation on how to cope with VIMAGE in the kernel (at kernel build time or building a module separately). 3rd party driver vendors will be most interested in this.
PS: it would be very welcoming for such mechanisms to be elegant in their usage ;)... Thank you, Adrian. On Thu, Feb 3, 2011 at 9:35 PM, Bjoern A. Zeeb <bzeeb-li...@lists.zabbadoz.net> wrote: > On Thu, 3 Feb 2011, Monthadar Al Jaberi wrote: > >> On Thu, Feb 3, 2011 at 12:18 PM, Bjoern A. Zeeb >> <bzeeb-li...@lists.zabbadoz.net> wrote: >>> >>> On Thu, 3 Feb 2011, Monthadar Al Jaberi wrote: >>> >>>> On Thu, Feb 3, 2011 at 11:59 AM, Bjoern A. Zeeb >>>> <bzeeb-li...@lists.zabbadoz.net> wrote: >>>>> >>>>> On Thu, 3 Feb 2011, Monthadar Al Jaberi wrote: >>>>> >>>>>>>>> I don't understand why you saw a CRED_TO_VNET of 0 >>>>>>>>> I was under the impression that every process/thread in the system >>>>>>>>> would >>>>>>>>> be >>>>>>>>> on vnet0 >>>>>>>>> in a vimage kernel. >>>>>>>> >>>>>>>> This is how my printf looks like: >>>>>>>> struct thread *td = curthread; >>>>>>>> struct vnet *v = TD_TO_VNET(td); >>>>>>>> struct ucred *cred = CRED_TO_VNET(td->ucred); >>>>>>>> struct vnet *td_vnet = td->td_vnet; >>>>>>> >>>>>>> here's your problem: >>>>>>> >>>>>>> strcut vnet *vnet = cred->cr_prison->pr_vnet; >>>>>> >>>>>> When I add CURVNET_SET(CRED_TO_VNET(curthread->td_ucred)); I get a >>>>>> panic >>>>>> too... >>>>>> But your suggestion works if I do like this: >>>>>> curthread->td_vnet = curthread->td_ucred->cr_prison->pr_vnet; >>>>>> >>>>>> CRED_TO_VNET(curthread->td_ucred) returns NULL >>>>> >>>>> I wonder how you are building your module and if VIMAGE is properly >>>>> defined. If it's not that would explain a lot of things. >>>> >>>> I have put options VIMAGE, rebuild both world and kernel. >>>> >>>> I can create jails with vnet options... >>>> >>>> I build my module with the standard Makefile for modules: >>>> ... >>>> KMOD = wtap >>>> ... >>>> SRCS = if_wtap_module.c if_wtap.c if_medium.c hal.c >>>> >>>> .include <bsd.kmod.mk> >>> >>> Right but are you building your module along with the kernel or >>> outside the tree? In the latter case you may want to add soemthing >>> like >>> >>> SRCS+= opt_global.h >>> >>> .if defined(KERNBUILDDIR) >>> MKDEP= -include ${KERNBUILDDIR}/opt_global.h >>> .else >>> CFLAGS+= -include opt_global.h >>> MKDEP= -include opt_global.h >>> >>> opt_global.h: >>> echo "#define VIMAGE 1" > ${.TARGET} >>> .endif >>> >>> and/or point KERNBUILDDIR to where you built your kernels. >> >> Thanks it works now.. > > > One thing you should be aware of is that if you will compile without > KERNBUILDDIR set, your module will not work on a non-VIMAGE kernel. > > Unfortuantely we can only have defaults for one or the other in the > case. Worst you may want to only do the "echo" if there was a command > line option like -DVIMAGE or the like. Note, setting it to 0 will not > do the trick as it would still be defined. > > /bz > > -- > Bjoern A. Zeeb You have to have visions! > <ks> Going to jail sucks -- <bz> All my daemons like it! > http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/jails.html > _______________________________________________ > freebsd-virtualization@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-virtualization > To unsubscribe, send any mail to > "freebsd-virtualization-unsubscr...@freebsd.org" > > _______________________________________________ freebsd-virtualization@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-virtualization To unsubscribe, send any mail to "freebsd-virtualization-unsubscr...@freebsd.org"