Am Dienstag, 14. Oktober 2008 schrieb Glauber Costa:
> Hi Carsten,
> 
> libkvm/libkvm.c, in function get_free_slot(), we see:
> 
> #if defined(KVM_CAP_SET_TSS_ADDR) && !defined(__s390__)
>         tss_ext = ioctl(kvm->fd, KVM_CHECK_EXTENSION, KVM_CAP_SET_TSS_ADDR);
> #else
>         tss_ext = 0;
> #endif
> 
> Effectively, because of that (and the check that follows), s390 will not
> use slot 0. Does it really matters for s390, or is it just a bug?
> 

It is a bug.
See
http://marc.info/?l=kvm&m=121751623912841&w=2
for a patch proposal. It was not merged because Avi went on vacation and I did 
not track this patch because we have not finished our kvm-userspace port 
anyway. 

This patch is still in our repository and we will send a fix whenever we have 
our userspace port ready.

Christian
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