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Change to using a new sdtrig vmstate format that allows for all architectural state if mcontext !=3D 0. This means a machine is sometimes-migratable, which on second thoughts is probably bad. Is there a better way to do this, or could we just break compat and move to the new vmstate? Not yet signed off. --- target/riscv/machine.c | 58 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 57 insertions(+), 1 deletion(-) diff --git a/target/riscv/machine.c b/target/riscv/machine.c index fdd5e8b67b..23a5f60d2a 100644 --- a/target/riscv/machine.c +++ b/target/riscv/machine.c @@ -221,8 +221,10 @@ static const VMStateDescription vmstate_kvmtimer =3D { static bool debug_needed(void *opaque) { RISCVCPU *cpu =3D opaque; + CPURISCVState *env =3D &cpu->env; =20 - return cpu->cfg.debug; + return cpu->cfg.debug && + env->sdtrig_state.mcontext =3D=3D 0; } =20 static int debug_pre_save(void *opaque) @@ -273,6 +275,59 @@ static const VMStateDescription vmstate_debug =3D { } }; =20 +/* + * This is a newer version of the debug (sdtrig) state, required + * to migrate hcontext/mcontext. + */ +static bool sdtrig_needed(void *opaque) +{ + RISCVCPU *cpu =3D opaque; + CPURISCVState *env =3D &cpu->env; + + return cpu->cfg.debug && + env->sdtrig_state.mcontext !=3D 0; +} + +static int sdtrig_post_load(void *opaque, int version_id) +{ + RISCVCPU *cpu =3D opaque; + CPURISCVState *env =3D &cpu->env; + + riscv_cpu_debug_post_load(env); + + return 0; +} + +static const VMStateDescription vmstate_sdtrig_trigger =3D { + .name =3D "cpu/sdtrig/trigger", + .version_id =3D 1, + .minimum_version_id =3D 1, + .fields =3D (const VMStateField[]) { + VMSTATE_UINTTL(tdata1, SdtrigTrigger), + VMSTATE_UINTTL(tdata2, SdtrigTrigger), + VMSTATE_UINTTL(tdata3, SdtrigTrigger), + VMSTATE_END_OF_LIST() + } +}; + +static const VMStateDescription vmstate_sdtrig =3D { + .name =3D "cpu/sdtrig", + .version_id =3D 1, + .minimum_version_id =3D 1, + .needed =3D sdtrig_needed, + .post_load =3D sdtrig_post_load, + .fields =3D (const VMStateField[]) { + VMSTATE_UINTTL(env.sdtrig_state.trigger_cur, RISCVCPU), + VMSTATE_UINTTL(env.sdtrig_state.tcontrol, RISCVCPU), + VMSTATE_UINTTL(env.sdtrig_state.mcontext, RISCVCPU), + VMSTATE_UINTTL(env.sdtrig_state.scontext, RISCVCPU), + VMSTATE_STRUCT_ARRAY(env.sdtrig_state.triggers, RISCVCPU, + RV_MAX_SDTRIG_TRIGGERS, + 0, vmstate_sdtrig_trigger, SdtrigTrigger), + VMSTATE_END_OF_LIST() + } +}; + static int riscv_cpu_post_load(void *opaque, int version_id) { RISCVCPU *cpu =3D opaque; @@ -514,6 +569,7 @@ const VMStateDescription vmstate_riscv_cpu =3D { #endif &vmstate_envcfg, &vmstate_debug, + &vmstate_sdtrig, &vmstate_smstateen, &vmstate_jvt, &vmstate_elp, --=20 2.51.0