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cpu-exec: don't overwrite exception_index 

This patch adds a condition before overwriting exception_index fiels.
It is needed when exception_index is already set to some meaningful value.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

Message-Id: <20171114081812.27640.26372.stgit@pasha-VirtualBox>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Pavel Dovgalyuk 2017-11-14 11:18:12 +03:00 committed by Paolo Bonzini
parent 9200361060
commit e01cecabf3
1 changed files with 3 additions and 1 deletions
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4
accel/tcg/cpu-exec.c
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@ -594,7 +594,9 @@ static inline bool cpu_handle_interrupt(CPUState *cpu,
if (unlikely(atomic_read(&cpu->exit_request)
|| (use_icount && cpu->icount_decr.u16.low + cpu->icount_extra == 0))) {
atomic_set(&cpu->exit_request, 0);
cpu->exception_index = EXCP_INTERRUPT;
if (cpu->exception_index == -1) {
cpu->exception_index = EXCP_INTERRUPT;
}
return true;
}