From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: riku.voipio@iki.fi, peter.maydell@linaro.org,
Richard Henderson <rth@twiddle.net>
Subject: [Qemu-devel] [PATCH v2 4/4] linux-user/sh4: Reduce TARGET_VIRT_ADDR_SPACE_BITS to 31
Date: Thu, 5 Oct 2017 10:36:01 -0400 [thread overview]
Message-ID: <20171005143601.21584-5-richard.henderson@linaro.org> (raw)
In-Reply-To: <20171005143601.21584-1-richard.henderson@linaro.org>
From: Richard Henderson <rth@twiddle.net>
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>
Message-Id: <20170708025030.15845-4-rth@twiddle.net>
---
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
next prev parent reply other threads:[~2017-10-05 14:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-05 14:35 [Qemu-devel] [PATCH v2 0/4] linux-user fixes for va mapping Richard Henderson
2017-10-05 14:35 ` [Qemu-devel] [PATCH v2 1/4] linux-user: Allow -R values up to 0xffff0000 for 32-bit ARM guests Richard Henderson
2017-10-05 14:35 ` [Qemu-devel] [PATCH v2 2/4] tcg: Fix off-by-one in assert in page_set_flags Richard Henderson
2017-10-05 14:36 ` [Qemu-devel] [PATCH v2 3/4] linux-user: Tidy and enforce reserved_va initialization Richard Henderson
2018-01-12 20:37 ` Alistair Francis
2018-01-12 22:12 ` Alistair Francis
2017-10-05 14:36 ` Richard Henderson [this message]
2017-10-16 12:41 ` [Qemu-devel] [PATCH v2 0/4] linux-user fixes for va mapping Riku Voipio
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