Am 06.11.2011 02:35, schrieb Alexander Graf: > On LinuxCon I had a nice chat with Linus on what he thinks kvm-tool > would be doing and what he expects from it. Basically he wants a > small and simple tool he and other developers can run to try out and > see if the kernel they just built actually works. > > Fortunately, QEMU can do that today already! The only piece that was > missing was the "simple" piece of the equation, so here is a script > that wraps around QEMU and executes a kernel you just built. > > If you do have KVM around and are not cross-compiling, it will use > KVM. But if you don't, you can still fall back to emulation mode and > at least check if your kernel still does what you expect. I only > implemented support for s390x and ppc there, but it's easily extensible > to more platforms, as QEMU can emulate (and virtualize) pretty much > any platform out there. > > If you don't have qemu installed, please do so before using this script. Your > distro should provide a package for it (might even call it "kvm"). If not, > just compile it from source - it's not hard! > > To quickly get going, just execute the following as user: > > $ ./Documentation/run-qemu.sh -r / -a init=/bin/bash Path needs updating. > > This will drop you into a shell on your rootfs. > > Happy hacking! > > Signed-off-by: Alexander Graf <agraf@xxxxxxx> > > --- > diff --git a/tools/testing/run-qemu/run-qemu.sh b/tools/testing/run-qemu/run-qemu.sh > new file mode 100755 > index 0000000..70f194f > --- /dev/null > +++ b/tools/testing/run-qemu/run-qemu.sh > +# Try to find the KVM accelerated QEMU binary > + > +[ "$ARCH" ] || ARCH=$(uname -m) > +case $ARCH in > +x86_64) > + KERNEL_BIN=arch/x86/boot/bzImage > + # SUSE and Red Hat call the binary qemu-kvm > + [ "$QEMU_BIN" ] || QEMU_BIN=$(which qemu-kvm 2>/dev/null) > + > + # Debian and Gentoo call it kvm > + [ "$QEMU_BIN" ] || QEMU_BIN=$(which kvm 2>/dev/null) > + > + # QEMU's own build system calls it qemu-system-x86_64 > + [ "$QEMU_BIN" ] || QEMU_BIN=$(which qemu-system-x86_64 2>/dev/null) > + ;; > +i*86) > + KERNEL_BIN=arch/x86/boot/bzImage > + # SUSE and Red Hat call the binary qemu-kvm > + [ "$QEMU_BIN" ] || QEMU_BIN=$(which qemu-kvm 2>/dev/null) > + > + # Debian and Gentoo call it kvm > + [ "$QEMU_BIN" ] || QEMU_BIN=$(which kvm 2>/dev/null) > + > + KERNEL_BIN=arch/x86/boot/bzImage Copy&paste? > + # i386 version of QEMU QEMU's own build system calls it qemu-system-i386 now. :) > + [ "$QEMU_BIN" ] || QEMU_BIN=$(which qemu 2>/dev/null) We should first test for qemu-system-i386, then fall back to old qemu. Andreas P.S. You're still ahead of time... -- SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
