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[Qemu-devel] [PATCH v2 4/4] linux-user/sh4: Reduce TARGET_VIRT_ADDR_SPAC
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From: |
Richard Henderson |
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Subject: |
[Qemu-devel] [PATCH v2 4/4] linux-user/sh4: Reduce TARGET_VIRT_ADDR_SPACE_BITS to 31 |
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Date: |
Thu, 5 Oct 2017 10:36:01 -0400 |
From: Richard Henderson <address@hidden>
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 <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
Message-Id: <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 79f85d3365..123f34783a 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
--
2.13.6