On 9/15/23 21:00, Philippe Mathieu-Daudé wrote:
> Currently accel_cpu_realize() only performs target-specific
> realization. Introduce the [un]realize_cpu fields in the
> base AccelClass to be able to perform target-agnostic
> [un]realization of vCPUs.
>
> Signed-off-by: Philippe Mathieu-Daudé <[email protected]>
Just thinking, for the benefit of the reader trying to understand the code
later on,
maybe putting in a "target_" in there somewhere in the function name?
like "realize_cpu_target", vs "realize_cpu_generic" ?
Ciao,
C
> ---
> include/qemu/accel.h | 2 ++
> accel/accel-common.c | 21 +++++++++++++++++++--
> 2 files changed, 21 insertions(+), 2 deletions(-)
>
> diff --git a/include/qemu/accel.h b/include/qemu/accel.h
> index 23254c6c9c..7bd9907d2a 100644
> --- a/include/qemu/accel.h
> +++ b/include/qemu/accel.h
> @@ -43,6 +43,8 @@ typedef struct AccelClass {
> bool (*has_memory)(MachineState *ms, AddressSpace *as,
> hwaddr start_addr, hwaddr size);
> #endif
> + bool (*realize_cpu)(CPUState *cpu, Error **errp);
> + void (*unrealize_cpu)(CPUState *cpu);
>
> /* gdbstub related hooks */
> int (*gdbstub_supported_sstep_flags)(void);
> diff --git a/accel/accel-common.c b/accel/accel-common.c
> index cc3a45e663..6d427f2b9d 100644
> --- a/accel/accel-common.c
> +++ b/accel/accel-common.c
> @@ -122,15 +122,32 @@ void accel_cpu_instance_init(CPUState *cpu)
> bool accel_cpu_realize(CPUState *cpu, Error **errp)
> {
> CPUClass *cc = CPU_GET_CLASS(cpu);
> + AccelState *accel = current_accel();
> + AccelClass *acc = ACCEL_GET_CLASS(accel);
>
> - if (cc->accel_cpu && cc->accel_cpu->cpu_realizefn) {
> - return cc->accel_cpu->cpu_realizefn(cpu, errp);
> + /* target specific realization */
> + if (cc->accel_cpu && cc->accel_cpu->cpu_realizefn
> + && !cc->accel_cpu->cpu_realizefn(cpu, errp)) {
> + return false;
> }
> +
> + /* generic realization */
> + if (acc->realize_cpu && !acc->realize_cpu(cpu, errp)) {
> + return false;
> + }
> +
> return true;
> }
>
> void accel_cpu_unrealize(CPUState *cpu)
> {
> + AccelState *accel = current_accel();
> + AccelClass *acc = ACCEL_GET_CLASS(accel);
> +
> + /* generic unrealization */
> + if (acc->unrealize_cpu) {
> + acc->unrealize_cpu(cpu);
> + }
> }
>
> int accel_supported_gdbstub_sstep_flags(void)
