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tcg: Make tb_flush() thread safe

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Use async_safe_run_on_cpu() to make tb_flush() thread safe.  This is
possible now that code generation does not happen in the middle of
execution.

It can happen that multiple threads schedule a safe work to flush the
translation buffer. To keep statistics and debugging output sane, always
check if the translation buffer has already been flushed.

Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org>
[AJB: minor re-base fixes]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <1470158864-17651-13-git-send-email-alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sergey Fedorov 2016-08-02 18:27:43 +01:00 • committed by Paolo Bonzini
parent 53f5ed9506
commit 3359baad36
4 changed files with 31 additions and 23 deletions
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2
include/exec/tb-context.h
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@ -38,7 +38,7 @@ struct TBContext {
QemuMutex tb_lock;
/* statistics */
int tb_flush_count;
unsigned tb_flush_count;
int tb_phys_invalidate_count;
};