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 v1:
1. Add license head to target/riscv/machine.c.
2. Regenerate some state of PMP at post_load hook.

Yifei Jiang (5):
  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       |   7 --
 target/riscv/cpu.h       |   4 +
 target/riscv/machine.c   | 203 +++++++++++++++++++++++++++++++++++++++
 target/riscv/meson.build |   3 +-
 target/riscv/pmp.c       |  29 +++---
 target/riscv/pmp.h       |   2 +
 8 files changed, 255 insertions(+), 20 deletions(-)
 create mode 100644 target/riscv/machine.c

-- 
2.19.1