| Message ID | 20170708025030.15845-4-rth@twiddle.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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 >
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
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> --- target/sh4/cpu.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)