Re: [Qemu-devel] [RFC][PATCH v3 1/3] configure: Add CONFIG_QEMU_LDST_OPTIMIZATION for TCG qemu_ld/st optimization

[Blue Swirl]

On Sat, Jul 14, 2012 at 10:23 AM, Yeongkyoon Lee
<address@hidden> wrote:
> Enable CONFIG_QEMU_LDST_OPTIMIZATION for TCG qemu_ld/st optimization only when
> a target uses softmmu and a host is i386 or x86_64.
> ---
>  configure |    8 ++++++++
>  1 files changed, 8 insertions(+), 0 deletions(-)
>
> diff --git a/configure b/configure
> index 500fe24..5b39c80 100755
> --- a/configure
> +++ b/configure
> @@ -3700,6 +3700,14 @@ case "$target_arch2" in
>    ;;
>  esac
>
> +case "$cpu" in
> +  i386|x86_64)
> +    if [ "$target_softmmu" = "yes" ] ; then

I suppose this check is not needed, user emulators will not use the
memory access helpers or TLB.

> +      echo "CONFIG_QEMU_LDST_OPTIMIZATION=y" >> $config_target_mak
> +    fi
> +  ;;
> +esac
> +
>  echo "TARGET_SHORT_ALIGNMENT=$target_short_alignment" >> $config_target_mak
>  echo "TARGET_INT_ALIGNMENT=$target_int_alignment" >> $config_target_mak
>  echo "TARGET_LONG_ALIGNMENT=$target_long_alignment" >> $config_target_mak
> --
> 1.7.4.1
>