This patch implements Loongson VirtualiZation (LVZ) extension support
for LoongArch's TCG target. With this patch, it is now possible to
start a nested KVM-accelerated virtual machine on a TCG-emulated virtual
machine.

Cc: Bibo Mao <maobibo@loongson.cn>
Cc: xianglai li <lixianglai@loongson.cn>
Signed-off-by: SignKirigami <prcups@krgm.moe>
Signed-off-by: Hengyu Yu <yuhengyu25@mails.ucas.ac.cn>

SignKirigami (4):
  target/loongarch: add LVZ CPU state and CSR metadata
  target/loongarch: add LVZ guest runtime support
  target/loongarch: translate LVZ CSR and trap instructions
  target/loongarch: virtualize guest TLB and address translation

 target/loongarch/cpu-csr.h                    |  42 ++
 target/loongarch/cpu-mmu.h                    |  37 +-
 target/loongarch/cpu.c                        | 132 ++++
 target/loongarch/cpu.h                        | 125 +++-
 target/loongarch/cpu_helper.c                 | 119 ++--
 target/loongarch/csr.c                        | 122 ++++
 target/loongarch/csr.h                        |   3 +
 target/loongarch/disas.c                      |  10 +
 target/loongarch/insns.decode                 |  17 +
 target/loongarch/internals.h                  |   8 +-
 target/loongarch/kvm/kvm.c                    |   1 +
 target/loongarch/machine.c                    | 249 ++++---
 target/loongarch/tcg/constant_timer.c         |  62 +-
 target/loongarch/tcg/csr_helper.c             | 127 +++-
 target/loongarch/tcg/helper.h                 |  30 +-
 .../tcg/insn_trans/trans_privileged.c.inc     | 353 +++++++++-
 target/loongarch/tcg/op_helper.c              |  83 ++-
 target/loongarch/tcg/tcg_cpu.c                | 182 +++--
 target/loongarch/tcg/tcg_loongarch.h          |   6 +-
 target/loongarch/tcg/tlb_helper.c             | 629 +++++++++++++-----
 target/loongarch/tcg/translate.c              |   6 +-
 target/loongarch/translate.h                  |   2 +
 22 files changed, 1909 insertions(+), 436 deletions(-)

-- 
2.52.0