On Mon, 4 Dec 2017 15:01:47 +0100 David Hildenbrand <da...@redhat.com> wrote:
> I have no idea what that instruction does, but KVM seems to suppress it, > setting cc=3 (and as it seems to be an io instruction, it should be > protected). Let's do the same for TCG, so we're at least equal. > > (it is used in the kernel for qdio, I wasn't even able to find the real > name of that instruction) <arcane knowledge from previous life> It's called SIGNAL ADAPTER, and we don't indicate qdio in the chsc stuff. </arcane knowledge from previous life> Following the KVM lead for undocumented stuff is the way to go, unsatisfying though it is. [Don't binutils etc. know the name?] > > Signed-off-by: David Hildenbrand <da...@redhat.com> > --- > target/s390x/insn-data.def | 1 + > target/s390x/translate.c | 8 ++++++++ > 2 files changed, 9 insertions(+)
