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Re: [PATCH 1/3] target/riscv: Remove the redundant initialization of env
From: |
Bin Meng |
Subject: |
Re: [PATCH 1/3] target/riscv: Remove the redundant initialization of env->misa_mxl |
Date: |
Mon, 13 Jun 2022 20:30:32 +0800 |
On Mon, Jun 13, 2022 at 8:33 AM Alistair Francis <alistair23@gmail.com> wrote:
>
> On Thu, Jun 9, 2022 at 11:08 AM Bin Meng <bmeng.cn@gmail.com> wrote:
> >
> > env->misa_mxl was already set in the RISC-V cpu init routine, and
> > validated at the beginning of riscv_cpu_realize(). There is no need
> > to do a redundant initialization later.
> >
> > Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
> > ---
> >
> > target/riscv/cpu.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> > index a91253d4bd..61d1737741 100644
> > --- a/target/riscv/cpu.c
> > +++ b/target/riscv/cpu.c
> > @@ -752,7 +752,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error
> > **errp)
> > ext |= RVJ;
> > }
> >
> > - set_misa(env, env->misa_mxl, ext);
> > + env->misa_ext_mask = env->misa_ext = ext;
>
> You're right that we don't need to set `misa_mxl`, but isn't it
> cleaner calling the helper function here instead of manually assigning
> it?
>
There is no helper for assigning misa_ext only. Do you want a new
helper for that?
Regards,
Bin