On Tue, Jul 19, 2011 at 03:04:22PM -0500, Anthony Liguori wrote: > On 07/19/2011 02:23 PM, Richard W.M. Jones wrote: > >From: "Richard W.M. Jones"<rjo...@redhat.com> > > > >When using qemu -machine accel=kvm:tcg, if KVM is not available you > >get a load of debugging output: > > > > Could not access KVM kernel module: No such file or directory > > failed to initialize KVM: No such file or directory > > Back to tcg accelerator. > > If you ask for kvm, and it can't be initialized, then shouldn't we > alert the user about this?
That's one way to look at it. Another is that libguestfs has specified that we want a "best effort". Give me KVM, if available - great! If not, I don't really care, give me TCG. The -machine option isn't expressive enough to say all these things of course. BTW, it seems in 0.15 that the -machine option is now required? eg in this case where it seems totally pointless: $ qemu -nographic -device \? KVM not supported for this target No accelerator found! This resulted in another bug and fix in libguestfs. http://git.annexia.org/?p=libguestfs.git;a=commitdiff;h=d82438431c1551610eb7d9945fa76d6387534582 Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://libguestfs.org
