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replay: do not build if TCG is not available

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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>
This commit is contained in:
Claudio Fontana 2020-10-13 21:21:23 +02:00 • committed by Paolo Bonzini
parent c51a5a23d8
commit 9b1c911654
10 changed files with 191 additions and 97 deletions
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3
net/meson.build
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@ -7,7 +7,6 @@ softmmu_ss.add(files(
'eth.c',
'filter-buffer.c',
'filter-mirror.c',
'filter-replay.c',
'filter-rewriter.c',
'filter.c',
'hub.c',
@ -17,6 +16,8 @@ softmmu_ss.add(files(
'util.c',
))
softmmu_ss.add(when: 'CONFIG_TCG', if_true: files('filter-replay.c'))
softmmu_ss.add(when: 'CONFIG_L2TPV3', if_true: files('l2tpv3.c'))
softmmu_ss.add(when: slirp, if_true: files('slirp.c'))
softmmu_ss.add(when: ['CONFIG_VDE', vde], if_true: files('vde.c'))