qemu /
qemu /
28a4df979a2ef92d9129886cd9dcb00c497ac4cb riscv: virt: Add cpu-topology DT node.
Currently, there is no cpu topology defined in RISC-V.
Define a device tree node that clearly describes the
entire topology. This saves the trouble of scanning individual
cache to figure out the topology.
Here is the linux kernel patch series that enables topology
for RISC-V.
http://lists.infradead.org/pipermail/linux-riscv/2019-June/005072.html
CPU topology after applying this patch in QEMU & above series in kernel
/ # cat /sys/devices/system/cpu/cpu2/topology/thread_siblings_list
2
/ # cat /sys/devices/system/cpu/cpu2/topology/physical_package_id
0
/ # cat /sys/devices/system/cpu/cpu2/topology/core_siblings_list
0-7
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
1 file changed
