On 28/02/2019 08:39, Andrew Randrianasulu wrote: >>> configure line: >>> setarch i686 ./configure --target-list=ppc64-softmmu >>> >>> launch line: >>> ppc64-softmmu/qemu-system-ppc64 -display >>> sdl,gl=on -hda /mnt/sdb1/PPC-img/alpine_disk.img >>> >>> where alpine_disk.img is HDD installed Alpine 3.7 for ppc64le with xfce4 >>> desktop. >> >> AFAICT the vector instructions converted here are independent of endian, so >> I can't see why this patch on its own would have any effect. >> >> Maybe it could be because the "setarch i686" part forces use of some >> lesser-used 32-bit paths in the vector code - is this required? And do you >> see the same issue on a x86_64 build? > > I use 32-bit Slackware userland with x86_64 kerenl - so setarch prevent most > of > configures from detecting my arch wrongly. > > Yes, bug was and is present with qemu compiled for x86_64 (inside chroot). > I initially discovered it there, and after dropping -O3 and even > march=native, > and even disabling avx2 via configure switch - moved to bisect. > > https://lists.gnu.org/archive/html/qemu-devel/2019-02/msg06414.html
Can you upload your alpine_disk.img somewhere and then email me the link off-list? I'll see if I can take a look when I get a spare moment. ATB, Mark.
