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* lockable: add QemuRecMutex supportStefan Hajnoczi2020-03-171-8/+8
| | | | | | | | | | | | The polymorphic locking macros don't support QemuRecMutex yet. Add it so that lock guards can be used with QemuRecMutex. Convert TCG plugins functions that benefit from these macros. Manual qemu_rec_mutex_lock/unlock() callers are left unmodified in cases where clarity would not improve by switching to the macros. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* tcg plugins: expose an API version conceptAlex Bennée2019-11-121-0/+21
| | | | | | | | | | | | This is a very simple versioning API which allows the plugin infrastructure to check the API a plugin was built against. We also expose a min/cur API version to the plugin via the info block in case it wants to avoid using old deprecated APIs in the future. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Robert Foley <robert.foley@linaro.org>
* plugin: expand the plugin_init function to include an info blockAlex Bennée2019-10-281-4/+19
| | | | | | | | This provides a limited amount of info to plugins about the guest system that will allow them to make some additional decisions on setup. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
* plugin: add core codeEmilio G. Cota2019-10-281-0/+362
Signed-off-by: Emilio G. Cota <cota@braap.org> [AJB: moved directory and merged various fixes] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>