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Make cpu_single_env thread-local 

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 <pbonzini@redhat.com>
[Peter Maydell: rename tls_cpu_single_env to cpu_single_env]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Paolo Bonzini 2011-10-28 10:52:42 +01:00 committed by Anthony Liguori
parent 8a5f7b03a0
commit b3c4bbe56d
2 changed files with 4 additions and 2 deletions
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4
cpu-all.h
View File

@ -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.

2
exec.c
View File

@ -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. */