Re: Loss of ed(4) in a RC1 booted in qemu

On Thu, Oct 13, 2005 at 05:26:55PM -0600, M. Warner Losh wrote:
> In message: <20051013200254.GA11267_at_saturn.kn-bremen.de>
>             Juergen Lock <nox_at_jelal.kn-bremen.de> writes:
> : On Thu, Oct 13, 2005 at 02:28:18PM -0400, Jung-uk Kim wrote:
> : > On Thursday 13 October 2005 12:10 pm, Jung-uk Kim wrote:
> : > > QEMU emulates RTL8029:
> : > >
> : > > ed0: <RealTek 8029> port 0xc100-0xc1ff irq 11 at device 3.0 on pci0
> : > > ed0: Reserved 0x100 bytes for rid 0x10 type 4 at 0xc100
> : > >
> : > > and Warner Losh MFC'd new ed(4) right before 6.0-RC1:
> : > >
> : > > http://docs.freebsd.org/cgi/mid.cgi?200510081800.j98I0fRI089493
> : > >
> : > > The new driver does more aggressive probing and it seems QEMU
> : > > cannot handle it.
> : > 
> : > Just for the time being, you can drop the attachment in 
> : > ports/emulators/qemu/files directory and rebuild qemu to get ed(4) 
> : > back.
> : > 
> : > Jung-uk Kim
> : 
> : >[patch snipped]
> : 
> : Okay, we could add this as an option to our qemu port (`-ne2kvia' or
> : something like that), anyone thinks it is necessary?  (I guess this
> : issue will be fixed in 6.0-R?)
> 
> I've committed patches to -current to fix this problem.  The fixes
> correct a minor botch in the probing code, while also adding tolerance
> for the RTL8029 that's claimed to be there to not really be there.
> I've posted patches to qemu that improves that RTL8029 emulation, but
> those aren't required for FreeBSD to work.  RC1 won't work with qemu,
> patched or unpatched, due to the minor botch.  RC2 and newer will have
> this problem fixed.  The qemu folks can include and improve upon my
> patches as they see fit in the future.
> 
> The problem with just switching to the VIA VT86C926 is that it isn't
> exactly like a NE-2000.  [...]

Okay, how about adding this to qemu's pkg-message then:

Index: pkg-message
===================================================================
RCS file: /home/ncvs/ports/emulators/qemu/pkg-message,v
retrieving revision 1.9
diff -u -r1.9 pkg-message
--- pkg-message	10 Sep 2005 17:04:41 -0000	1.9
+++ pkg-message	14 Oct 2005 18:49:55 -0000
_at__at_ -25,5 +25,12 _at__at_
 (see kern/84102, http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/84102),
 using a kernel without PREEMPTION has been reported to fix this problem.
 (or do an ftp install instead of installing from the emulated cdrom, and
-then make a new kernel.)
+then make a new kernel.)  [now fixed in cvs.]
+- 6.0-RC1 was released with an ed driver that doesn't like qemu's emulated
+RTL8029 nic, this has been fixed in the meantime but if for some reason
+you need to use that version as a guest you can temporarily add the patch
+in this message: http://docs.freebsd.org/cgi/mid.cgi?200510131428.21211.jkim
+(not included in the port since the used VIA VT86C926 PCI ID does not
+really match the emulated nic exactly, it just `happens' to work with
+6.0-RC1's driver.)
 ====