On 15/12/2015 15:31, Paolo Bonzini wrote: > > > On 15/12/2015 15:23, alvise rigo wrote: >> Hi, >> >> On Mon, Dec 14, 2015 at 11:14 AM, Laurent Vivier <lviv...@redhat.com> wrote: >>> >>> >>> On 14/12/2015 09:41, Alvise Rigo wrote: >>>> Use the new slow path for atomic instruction translation when the >>>> softmmu is enabled. >>>> >>>> Suggested-by: Jani Kokkonen <jani.kokko...@huawei.com> >>>> Suggested-by: Claudio Fontana <claudio.font...@huawei.com> >>>> Signed-off-by: Alvise Rigo <a.r...@virtualopensystems.com> >>>> --- >>>> configure | 4 ++++ >>>> 1 file changed, 4 insertions(+) >>>> >>>> diff --git a/configure b/configure >>>> index b9552fd..cc3891a 100755 >>>> --- a/configure >>>> +++ b/configure >>>> @@ -4794,6 +4794,7 @@ echo "Install blobs $blobs" >>>> echo "KVM support $kvm" >>>> echo "RDMA support $rdma" >>>> echo "TCG interpreter $tcg_interpreter" >>>> +echo "use ld/st excl $softmmu" >>>> echo "fdt support $fdt" >>>> echo "preadv support $preadv" >>>> echo "fdatasync $fdatasync" >>>> @@ -5186,6 +5187,9 @@ fi >>>> if test "$tcg_interpreter" = "yes" ; then >>>> echo "CONFIG_TCG_INTERPRETER=y" >> $config_host_mak >>>> fi >>>> +if test "$softmmu" = "yes" ; then >>>> + echo "CONFIG_TCG_USE_LDST_EXCL=y" >> $config_host_mak >>>> +fi >>> >>> why is this "$softmmu" and not "$target_softmmu" ? >> >> I see now that is $target_softmmu setting CONFIG_SOFTMMU=y. >> So for my understanding, which are the cases where $softmmu is set >> while $target_softmmu is not? > > When compiling foo-linux-user.
In fact, after having asked the question, I've found that it is right to use softmmu which is a host parameter (while target_softmmu is guest parameter) and softmmu is set to true if there is at least one *-softmmu target. Laurent
