On Thu, 12 Mar 2015 17:25:15 +0100 Paolo Bonzini <pbonz...@redhat.com> wrote: > > > On 12/03/2015 08:08, Michael S. Tsirkin wrote: > > But common header format is simple, it's always LE. > > It does not depend on target. > > To me this looks like a bug in memory_region_add_eventfd, > > it should do the right thing depending on device > > endian-ness. > > I agree it seems to be a QEMU bug. > > Paolo >
Yes you're right ! QEMU swaps the virtqueue id (adjust_endianness) according to TARGET_WORDS, like it was coming from the guest but in fact it comes from the host. The id should be fixed according to HOST_WORDS instead. Of course this went unnoticed until TARGET_WORDS_BIGENDIAN != HOST_WORDS_BIGENDIAN, which we have now with ppc64le hosts. Patches to follow. Thanks. -- Greg
