On Tue, 2 Jun 2020 at 17:25, Fabien Chouteau <chout...@adacore.com> wrote: > Using the sifive_u machine on qemu-system-riscv64 which has 2 clusters of 1 > and 4 CPUs respectively, when I use the "info threads" command in GDB only > one thread is displayed. > This thread is the only CPU of the 1st cluster, the CPUs of cluster 2nd are > not listed at all.
By default gdb does not attach to all clusters (this is IIRC something that can't be influenced on the QEMU end); are you explicitly asking it to attach to the second cluster? https://lists.nongnu.org/archive/html/qemu-devel/2020-01/msg07035.html is a mailing list post from January which gives the gdb commands which ought to cause it to attach to the second cluster on this machine. thanks -- PMM
