On 07/07/2017 11:50 PM, Richard Henderson wrote:
> The real kernel has TASK_SIZE as 0x7c000000, due to quirks with
> a couple of SH parts. But nominally user-space is limited to 2GB.
>
> Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
> target/sh4/cpu.h | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/target/sh4/cpu.h b/target/sh4/cpu.h
> index e3abb6a..3121d1e 100644
> --- a/target/sh4/cpu.h
> +++ b/target/sh4/cpu.h
> @@ -45,7 +45,11 @@
> #define TARGET_PAGE_BITS 12 /* 4k XXXXX */
>
> #define TARGET_PHYS_ADDR_SPACE_BITS 32
> -#define TARGET_VIRT_ADDR_SPACE_BITS 32
> +#ifdef CONFIG_USER_ONLY
> +# define TARGET_VIRT_ADDR_SPACE_BITS 31
> +#else
> +# define TARGET_VIRT_ADDR_SPACE_BITS 32
> +#endif
>
> #define SR_MD 30
> #define SR_RB 29
>