Re: [PATCH v2 16/28] target/ppc/mmu_common.c: Simplify mmubooke206_get_physical_address()

["Nicholas Piggin" <npiggin@gmail.com>]

On Thu May 2, 2024 at 9:43 AM AEST, BALATON Zoltan wrote:
> This function is similar to mmubooke_get_physical_address() and can be
> simplified the same way.
>
> Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
> ---
>  target/ppc/mmu_common.c | 28 ++++++++++------------------
>  1 file changed, 10 insertions(+), 18 deletions(-)
>
> diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c
> index 760e4072b2..ebf18a751c 100644
> --- a/target/ppc/mmu_common.c
> +++ b/target/ppc/mmu_common.c
> @@ -872,15 +872,11 @@ static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
>                                              int mmu_idx)
>  {
>      ppcmas_tlb_t *tlb;
> -    hwaddr raddr;
> -    int i, j, ret;
> -
> -    ret = -1;
> -    raddr = (hwaddr)-1ULL;
> +    hwaddr raddr = (hwaddr)-1ULL;
> +    int i, j, ways, ret = -1;
>  
>      for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
> -        int ways = booke206_tlb_ways(env, i);

Don't need to bring the ways variable into a larger scope I think?
Otherwise,

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>

> -
> +        ways = booke206_tlb_ways(env, i);
>          for (j = 0; j < ways; j++) {
>              tlb = booke206_get_tlbm(env, i, address, j);
>              if (!tlb) {
> @@ -889,6 +885,9 @@ static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
>              ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address,
>                                          access_type, mmu_idx);
>              if (ret != -1) {
> +                if (ret >= 0) {
> +                    ctx->raddr = raddr;
> +                }
>                  goto found_tlb;
>              }
>          }
> @@ -896,17 +895,10 @@ static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
>  
>  found_tlb:
>  
> -    if (ret >= 0) {
> -        ctx->raddr = raddr;
> -         qemu_log_mask(CPU_LOG_MMU, "%s: access granted " TARGET_FMT_lx
> -                       " => " HWADDR_FMT_plx " %d %d\n", __func__, address,
> -                       ctx->raddr, ctx->prot, ret);
> -    } else {
> -         qemu_log_mask(CPU_LOG_MMU, "%s: access refused " TARGET_FMT_lx
> -                       " => " HWADDR_FMT_plx " %d %d\n", __func__, address,
> -                       raddr, ctx->prot, ret);
> -    }
> -
> +    qemu_log_mask(CPU_LOG_MMU, "%s: access %s " TARGET_FMT_lx " => "
> +                  HWADDR_FMT_plx " %d %d\n", __func__,
> +                  ret < 0 ? "refused" : "granted", address, raddr,
> +                  ctx->prot, ret);
>      return ret;
>  }
>