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[Qemu-devel] [PATCH 3/9] linux-user: Reset copied CPUs in cpu_copy() alw
From: |
Alexander Graf |
Subject: |
[Qemu-devel] [PATCH 3/9] linux-user: Reset copied CPUs in cpu_copy() always |
Date: |
Sat, 6 Jul 2013 14:17:51 +0200 |
When a new thread gets created, we need to reset non arch specific state to
get the new CPU into clean state.
However this reset should happen before the arch specific CPU contents get
copied over. Otherwise we end up having clean reset state in our newly created
thread.
Signed-off-by: Alexander Graf <address@hidden>
---
exec.c | 4 ++++
linux-user/syscall.c | 3 ---
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/exec.c b/exec.c
index 4e20143..7eaa3a0 100644
--- a/exec.c
+++ b/exec.c
@@ -638,6 +638,10 @@ CPUArchState *cpu_copy(CPUArchState *env)
CPUWatchpoint *wp;
#endif
+ /* Reset non arch specific state */
+ cpu_reset(ENV_GET_CPU(new_env));
+
+ /* Copy arch specific state into the new CPU */
memcpy(new_env, env, sizeof(CPUArchState));
/* Clone all break/watchpoints.
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 433d3ba..89b7698 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4234,9 +4234,6 @@ static int do_fork(CPUArchState *env, unsigned int flags,
abi_ulong newsp,
init_task_state(ts);
/* we create a new CPU instance. */
new_env = cpu_copy(env);
-#if defined(TARGET_I386) || defined(TARGET_SPARC) || defined(TARGET_PPC)
- cpu_reset(ENV_GET_CPU(new_env));
-#endif
/* Init regs that differ from the parent. */
cpu_clone_regs(new_env, newsp);
new_env->opaque = ts;
--
1.6.0.2
- [Qemu-devel] [PATCH 0/9] Wine enablement patch set v2, Alexander Graf, 2013/07/06
- [Qemu-devel] [PATCH 7/9] linux-user: Enable NPTL for i386, Alexander Graf, 2013/07/06
- [Qemu-devel] [PATCH 6/9] linux-user: Add i386 TLS setter, Alexander Graf, 2013/07/06
- [Qemu-devel] [PATCH 3/9] linux-user: Reset copied CPUs in cpu_copy() always,
Alexander Graf <=
- [Qemu-devel] [PATCH 2/9] user-exec.c: Set is_write correctly in the ARM cpu_signal_handler(), Alexander Graf, 2013/07/06
- [Qemu-devel] [PATCH 8/9] linux-user: Default to 64k guest base, Alexander Graf, 2013/07/06
- [Qemu-devel] [PATCH 1/9] linux-user: fix segmentation fault passing with h2g(x) != x, Alexander Graf, 2013/07/06
- [Qemu-devel] [PATCH 5/9] linux-user: Fix epoll on ARM hosts, Alexander Graf, 2013/07/06
- [Qemu-devel] [PATCH 9/9] linux-user: Unlock mmap_lock when resuming guest from page_unprotect, Alexander Graf, 2013/07/06
- [Qemu-devel] [PATCH 4/9] linux-user: Clean up sendrecvmsg message parsing, Alexander Graf, 2013/07/06