From: Paolo Bonzini <pbonz...@redhat.com>
Make cpu_single_env thread-local. This fixes a regression
in handling of multi-threaded programs in linux-user mode
(bug 823902).
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
[Peter Maydell: rename tls_cpu_single_env to cpu_single_env]
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
Reviewed-by: Andreas Färber <afaer...@suse.de>
---
cpu-all.h | 4 +++-
exec.c | 2 +-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/cpu-all.h b/cpu-all.h
index 42a5fa0..5f47ab8 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -20,6 +20,7 @@
#define CPU_ALL_H
#include "qemu-common.h"
+#include "qemu-tls.h"
#include "cpu-common.h"
/* some important defines:
@@ -334,7 +335,8 @@ void cpu_dump_statistics(CPUState *env, FILE *f,
fprintf_function cpu_fprintf,
void QEMU_NORETURN cpu_abort(CPUState *env, const char *fmt, ...)
GCC_FMT_ATTR(2, 3);
extern CPUState *first_cpu;
-extern CPUState *cpu_single_env;
+DECLARE_TLS(CPUState *,cpu_single_env);
+#define cpu_single_env get_tls(cpu_single_env)
/* Flags for use in ENV->INTERRUPT_PENDING.
diff --git a/exec.c b/exec.c
index 9dc4edb..18e26cb 100644
--- a/exec.c
+++ b/exec.c
@@ -120,7 +120,7 @@ static MemoryRegion *system_io;
CPUState *first_cpu;
/* current CPU in the current thread. It is only valid inside
cpu_exec() */
-CPUState *cpu_single_env;
+DEFINE_TLS(CPUState *,cpu_single_env);
/* 0 = Do not count executed instructions.
1 = Precise instruction counting.
2 = Adaptive rate instruction counting. */
--
1.7.1
