Re: [RFC PATCH 1/4] target/ppc: Don't compile ppc_tlb_invalid_all without TCG

[David Gibson]

On Wed, Jun 02, 2021 at 04:26:01PM -0300, Lucas Mateus Castro (alqotel) wrote:
> The function ppc_tlb_invalid_all is not compiled anymore in a TCG-less
> environment, and the call to that function has been disabled in this
> situation.
> 
> Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
> ---
> Is there a better way than to deal with the
> ppc_tlb_invalidate_all call than ifdef? I couldn't think of one.
> ---
>  target/ppc/cpu_init.c   | 4 ++++
>  target/ppc/mmu_helper.c | 4 ++++
>  2 files changed, 8 insertions(+)
> 
> diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c
> index 74a397ad6c..2051f24467 100644
> --- a/target/ppc/cpu_init.c
> +++ b/target/ppc/cpu_init.c
> @@ -9114,7 +9114,11 @@ static void ppc_cpu_reset(DeviceState *dev)
>  #if !defined(CONFIG_USER_ONLY)
>      env->nip = env->hreset_vector | env->excp_prefix;
>      if (env->mmu_model != POWERPC_MMU_REAL) {
> +#if defined(CONFIG_TCG)
>          ppc_tlb_invalidate_all(env);
> +#else
> +     cpu_abort(env_cpu(env),"PowerPC not in real mode, invalid in this 
> build\n");

As Lucas says, this doesn't look right, I think you want a no-op stub
for ppc_tlb_invalidate_all instead().

Also, qemu style is not to use tabs for indentation.

> +#endif
>      }
>  #endif
>  
> diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c
> index 1ecb36e85a..803b66f2b0 100644
> --- a/target/ppc/mmu_helper.c
> +++ b/target/ppc/mmu_helper.c
> @@ -825,6 +825,7 @@ static int mmubooke_get_physical_address(CPUPPCState 
> *env, mmu_ctx_t *ctx,
>      return ret;
>  }
>  
> +#ifdef CONFIG_TCG
>  static void booke206_flush_tlb(CPUPPCState *env, int flags,
>                                 const int check_iprot)
>  {
> @@ -846,6 +847,7 @@ static void booke206_flush_tlb(CPUPPCState *env, int 
> flags,
>  
>      tlb_flush(env_cpu(env));
>  }
> +#endif
>  
>  static hwaddr booke206_tlb_to_page_size(CPUPPCState *env,
>                                          ppcmas_tlb_t *tlb)
> @@ -1952,6 +1954,7 @@ void helper_store_601_batl(CPUPPCState *env, uint32_t 
> nr, target_ulong value)
>  }
>  #endif
>  
> +#ifdef CONFIG_TCG
>  
> /*****************************************************************************/
>  /* TLB management */
>  void ppc_tlb_invalidate_all(CPUPPCState *env)
> @@ -1995,6 +1998,7 @@ void ppc_tlb_invalidate_all(CPUPPCState *env)
>          break;
>      }
>  }
> +#endif
>  
>  #ifdef CONFIG_TCG
>  void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr)

-- 
David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!
http://www.ozlabs.org/~dgibson

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