This patches supported RISC-V migration based on tcg accel. And we have verified related migration features such as snapshot and live migration.
A few weeks ago, we submitted RFC patches about supporting RISC-V migration based on kvm accel: https://www.spinics.net/lists/kvm/msg223605.html. And we found that tcg accelerated migration can be supported with a few changes. Most of the devices have already implemented the migration interface, so, to achieve the tcg accelerated migration, we just need to add vmstate of both cpu and sifive_plic. Changes since v2: 1. Move vmstate_riscv_cpu declaration to internals.h. 2. Merge m/vsstatus and m/vsstatush into one uint64_t unit. Changes since v1: 1. Add license head to target/riscv/machine.c. 2. Regenerate some state of PMP at post_load hook. Yifei Jiang (6): target/riscv: Merge m/vsstatus and m/vsstatush into one uint64_t unit target/riscv: Add basic vmstate description of CPU target/riscv: Add PMP state description target/riscv: Add H extension state description target/riscv: Add V extension state description target/riscv: Add sifive_plic vmstate hw/intc/sifive_plic.c | 26 ++++- hw/intc/sifive_plic.h | 1 + target/riscv/cpu.c | 16 ++-- target/riscv/cpu.h | 16 +--- target/riscv/cpu_bits.h | 16 ++-- target/riscv/cpu_helper.c | 72 ++++++-------- target/riscv/csr.c | 28 +++--- target/riscv/internals.h | 4 + target/riscv/machine.c | 196 ++++++++++++++++++++++++++++++++++++++ target/riscv/meson.build | 3 +- target/riscv/op_helper.c | 49 +++++----- target/riscv/pmp.c | 29 +++--- target/riscv/pmp.h | 2 + 13 files changed, 331 insertions(+), 127 deletions(-) create mode 100644 target/riscv/machine.c -- 2.19.1
