On 2026/5/19 下午2:30, SignKirigami wrote:
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.
Hi SignKirigami,
I suggest minimal support with LVZ at beginning, such as no PTW, no
machine state save/restore etc. Just CPU virtualization and simple
memory virtualization is enough.
Regards
Bibo Mao
Cc: Bibo Mao <[email protected]>
Cc: xianglai li <[email protected]>
Signed-off-by: SignKirigami <[email protected]>
Signed-off-by: Hengyu Yu <[email protected]>
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(-)
