[Qemu-devel] [PATCH v3 30/30] linux-user/sh4: Reduce TARGET_VIRT_ADDR_SPACE_BITS to 31

[Richard Henderson]

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.

Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
 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
-- 
2.9.4