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qom/cpu: atomically clear the tb_jmp_cache 

The ThreadSanitizer rightly complains that something initialised with a
normal access is later updated and read atomically.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20160930213106.20186-8-alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Alex Bennée 2016-09-30 22:30:58 +01:00 committed by Paolo Bonzini
parent b6b3ccfda0
commit ce7cf6a973
1 changed files with 5 additions and 1 deletions
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qom/cpu.c
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@ -253,6 +253,7 @@ void cpu_reset(CPUState *cpu)
static void cpu_common_reset(CPUState *cpu)
{
CPUClass *cc = CPU_GET_CLASS(cpu);
int i;
if (qemu_loglevel_mask(CPU_LOG_RESET)) {
qemu_log("CPU Reset (CPU %d)\n", cpu->cpu_index);
@ -268,7 +269,10 @@ static void cpu_common_reset(CPUState *cpu)
cpu->can_do_io = 1;
cpu->exception_index = -1;
cpu->crash_occurred = false;
memset(cpu->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof(void *));
for (i = 0; i < TB_JMP_CACHE_SIZE; ++i) {
atomic_set(&cpu->tb_jmp_cache[i], NULL);
}
}
static bool cpu_common_has_work(CPUState *cs)