Date: Thu, 4 Dec 2008 14:43:47 -0800 (PST) From: Nate Eldredge <neldredge@math.ucsd.edu> To: Juergen Lock <nox@jelal.kn-bremen.de> Cc: yanefbsd@gmail.com, freebsd-hackers@freebsd.org Subject: Re: AMD64 qemu completely broken? Message-ID: <Pine.GSO.4.64.0812041428400.22402@zeno.ucsd.edu> In-Reply-To: <20081204212311.GA17962@saturn.kn-bremen.de> References: <5f67a8c40812021718i4cc225fem5b02a448702ec606@mail.gmail.com> <7d6fde3d0812040327w7c92826i64c6073a453d65ef@mail.gmail.com> <5f67a8c40812040952u1364563awcfd493695e7fea7c@mail.gmail.com> <200812042046.mB4KkC0k016853@saturn.kn-bremen.de> <20081204212311.GA17962@saturn.kn-bremen.de>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, 4 Dec 2008, Juergen Lock wrote: > I forgot to say the qemu-devel port (as well as the later snapshots I > posted about on -emulation) also support -curses, which shows the emulated > vga text(!)console on qemu's tty. This works quite well with FreeBSD guests > (even the isos) if you extend your xterm/whatever by one line (the default > vga textconsole is 80x25 instead of 80x24.) As long as we're sharing tips about qemu: I've recently been working with qemu on amd64 and have set up a Debian etch i386 guest which is working well. I am using the qemu-devel and kqemu-kmod-devel ports. I am not using -kernel-kqemu at the moment; I thought I would get things working before trying to speed up. Using qemu I've finally achieved my goal of being able to use flash on FreeBSD/amd64 (in some sense :-O). savevm and loadvm don't work due to a security patch. Since my guest system is trusted I reverted the patch. I filed a PR as ports/129417 . I found that '-net user' is horribly broken on amd64 (qemu segfaults). It uses some ancient [*] BSD TCP/IP code (via slirp) which assumes that pointers are 32 bits and doesn't hesitate to shove them into random 32-bit corners of externally defined structures if it's convenient. Looks like a pain to clean up. '-net tap' works fine, but requires root privileges and is more work to set up. [*] Out of curiosity, I looked at some Unix Archive stuff and found the identical code in BSD's Net2, circa 1991. It is identified in a comment as a "quick hack" and adorned with several /* XXX */. Naturally the code and the comments survive intact, 17 years later. :-( -- Nate Eldredge neldredge@math.ucsd.edu
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.GSO.4.64.0812041428400.22402>