Some times we want to know what is the really mean of one cpu option. For example, in RISC-V, we usually specify a cpu in this way: -cpu rv64,v=on
If we don't look into the source code, we can't get the ISA extensions of this -cpu command line. In this patch set, we add one list_cpu_props API for common cores. It will output the enabled ISA extensions. In the near future, I will also list all possible user configurable options and all possible extensions for this cpu. In order to reuse the options parse code, I also add a QemuOptsList for cpu. After this patch, we can output the extensions for cpu, """ ./qemu-system-riscv64 -cpu rv64,help Enabled extensions: rv64imafdch_zicbom_zicboz_zicsr_zifencei_zihintpause_zawrs_zfa_zba_zbb_zbc_zbs_sstc_svadu To get all configuable options for this cpu, use -device rv64-riscv-cpu,help """ v1->v2: 1) Give a hint to use -device cpu,help for configualbe options on cpu 2) Support list_cpu_props for linux user mode 3) Add default to some properties to make -device cpu,help output better Todo: 1) Fix Daniel comments on KVM and cpu option check 2) Add support for other archs 3) Move qdev help function from qdev-monitor to qdev-property LIU Zhiwei (6): cpu: Add new API cpu_type_by_name target/riscv: Add API list_cpu_props softmmu/vl: Add qemu_cpu_opts QemuOptsList target/riscv: Add default value for misa property target/riscv: Add defalut value for string property linux-user: Move qemu_cpu_opts to cpu.c cpu.c | 63 +++++++++++++++++++++++++++++------- hw/core/qdev-prop-internal.h | 2 ++ hw/core/qdev-properties.c | 7 ++++ include/exec/cpu-common.h | 3 ++ include/hw/core/cpu.h | 11 +++++++ include/hw/qdev-properties.h | 8 +++++ linux-user/main.c | 10 ++++++ softmmu/vl.c | 11 +++++++ target/riscv/cpu.c | 30 +++++++++++++---- target/riscv/cpu.h | 2 ++ 10 files changed, 128 insertions(+), 19 deletions(-) -- 2.17.1