On Tue, Jul 19, 2011 at 11:49:22PM +0400, Michael Tokarev wrote:
> 19.07.2011 23:23, 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.
> >
> > Signed-off-by: Richard W.M. Jones <rjo...@redhat.com>
> > ---
> > kvm-all.c | 1 -
> > vl.c | 14 --------------
> > 2 files changed, 0 insertions(+), 15 deletions(-)
> >
> > diff --git a/kvm-all.c b/kvm-all.c
> > index cbc2532..35d698b 100644
> > --- a/kvm-all.c
> > +++ b/kvm-all.c
> > @@ -713,7 +713,6 @@ int kvm_init(void)
> > s->vmfd = -1;
> > s->fd = qemu_open("/dev/kvm", O_RDWR);
> > if (s->fd == -1) {
> > - fprintf(stderr, "Could not access KVM kernel module: %m\n");
>
> Don't do this. qemu error reporting sucks badly already,
> and this very error message gives us at least some details
> (the %m part) about what's missing. There's no other place
> where this information is printed in case this open fails.
> We already have to resort to strace in way too many places... :(
This is an argument for having some sort of global --debug option.
Silent by default, but debug messages are a mere runtime flag away.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-p2v converts physical machines to virtual machines. Boot with a
live CD or over the network (PXE) and turn machines into Xen guests.
http://et.redhat.com/~rjones/virt-p2v
