Re: [RFC v9 18/32] cpu: Move synchronize_from_tb() to tcg_ops

[Philippe Mathieu-Daudé]

On 12/8/20 8:48 PM, Claudio Fontana wrote:
> From: Eduardo Habkost <ehabkost@redhat.com>
> 
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
> [claudio: wrapped in CONFIG_TCG]
> Signed-off-by: Claudio Fontana <cfontana@suse.de>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
...
> diff --git a/include/hw/core/tcg-cpu-ops.h b/include/hw/core/tcg-cpu-ops.h
> index 4475ef0996..109291ac52 100644
> --- a/include/hw/core/tcg-cpu-ops.h
> +++ b/include/hw/core/tcg-cpu-ops.h
> @@ -10,9 +10,6 @@
>  #ifndef TCG_CPU_OPS_H
>  #define TCG_CPU_OPS_H

Missing for TranslationBlock:

  #include "hw/core/cpu.h"

>  
> -/**
> - * struct TcgCpuOperations: TCG operations specific to a CPU class
> - */

Why remove the comment?

>  typedef struct TcgCpuOperations {
>      /**
>       * @initialize: Initalize TCG state
> @@ -20,6 +17,17 @@ typedef struct TcgCpuOperations {
>       * Called when the first CPU is realized.
>       */
>      void (*initialize)(void);
> +    /**
> +     * @synchronize_from_tb: Synchronize state from a TCG #TranslationBlock
> +     *
> +     * This is called when we abandon execution of a TB before
> +     * starting it, and must set all parts of the CPU state which
> +     * the previous TB in the chain may not have updated. This
> +     * will need to do more. If this hook is not implemented then
> +     * the default is to call
> +     * @set_pc(tb->pc).
> +     */
> +    void (*synchronize_from_tb)(CPUState *cpu, struct TranslationBlock *tb);
>  } TcgCpuOperations;
...