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-rw-r--r--meta/recipes-devtools/qemu/files/3f08ffb4a4741d147634761dc053ed386243a0de.patch42
1 files changed, 42 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/files/3f08ffb4a4741d147634761dc053ed386243a0de.patch b/meta/recipes-devtools/qemu/files/3f08ffb4a4741d147634761dc053ed386243a0de.patch
new file mode 100644
index 0000000000..6bcf3d1552
--- /dev/null
+++ b/meta/recipes-devtools/qemu/files/3f08ffb4a4741d147634761dc053ed386243a0de.patch
@@ -0,0 +1,42 @@
1Upsteream-Status: Backport
2
3[Appears to fix the random segfaults we were seeing in a variety of architectures:
4https://bugzilla.yoctoproject.org/show_bug.cgi?id=4216 ]
5
6
7From: Yeongkyoon Lee <yeongkyoon.lee@samsung.com>
8Date: Fri, 22 Mar 2013 12:50:17 +0000 (+0900)
9Subject: tcg: Fix occasional TCG broken problem when ldst optimization enabled
10X-Git-Url: http://git.qemu.org/?p=qemu.git;a=commitdiff_plain;h=52ae646d4a3ebdcdcc973492c6a56f2c49b6578f;hp=3f08ffb4a4741d147634761dc053ed386243a0de
11
12tcg: Fix occasional TCG broken problem when ldst optimization enabled
13
14is_tcg_gen_code() checks the upper limit of TCG generated code range wrong, so
15that TCG could get broken occasionally only when CONFIG_QEMU_LDST_OPTIMIZATION
16enabled. The reason is code_gen_buffer_max_size does not cover the upper range
17up to (TCG_MAX_OP_SIZE * OPC_BUF_SIZE), thus code_gen_buffer_max_size should be
18modified to code_gen_buffer_size.
19
20CC: qemu-stable@nongnu.org
21Signed-off-by: Yeongkyoon Lee <yeongkyoon.lee@samsung.com>
22Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
23Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
24---
25
26Index: qemu-1.4.0/translate-all.c
27===================================================================
28--- qemu-1.4.0.orig/translate-all.c 2013-04-09 10:58:19.000000000 +0000
29+++ qemu-1.4.0/translate-all.c 2013-04-09 10:58:34.783203406 +0000
30@@ -1310,10 +1310,10 @@
31 /* check whether the given addr is in TCG generated code buffer or not */
32 bool is_tcg_gen_code(uintptr_t tc_ptr)
33 {
34- /* This can be called during code generation, code_gen_buffer_max_size
35+ /* This can be called during code generation, code_gen_buffer_size
36 is used instead of code_gen_ptr for upper boundary checking */
37 return (tc_ptr >= (uintptr_t)code_gen_buffer &&
38- tc_ptr < (uintptr_t)(code_gen_buffer + code_gen_buffer_max_size));
39+ tc_ptr < (uintptr_t)(code_gen_buffer + code_gen_buffer_size));
40 }
41 #endif
42