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2020-10-22replay: do not build if TCG is not availableClaudio Fontana
this fixes non-TCG builds broken recently by replay reverse debugging. Stub the needed functions in stub/, splitting roughly between functions needed only by system emulation, by system emulation and tools, and by everyone. This includes duplicating some code in replay/, and puts the logic for non-replay related events in the replay/ module (+ the stubs), so this should be revisited in the future. Surprisingly, only _one_ qtest was affected by this, ide-test.c, which resulted in a buzz as the bh events were never delivered, and the bh never executed. Many other subsystems _should_ have been affected. This fixes the immediate issue, however a better way to group replay functionality to TCG-only code could be developed in the long term. Signed-off-by: Claudio Fontana <cfontana@suse.de> Message-Id: <20201013192123.22632-4-cfontana@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>