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2021-02-18accel/tcg: allow plugin instrumentation to be disable via cflagsAlex Bennée1-0/+4
When icount is enabled and we recompile an MMIO access we end up double counting the instruction execution. To avoid this we introduce the CF_MEMI cflag which only allows memory instrumentation for the next TB (which won't yet have been counted). As this is part of the hashed compile flags we will only execute the generated TB while coming out of a cpu_io_recompile. While we are at it delete the old TODO. We might as well keep the translation handy as it's likely you will repeatedly hit it on each MMIO access. Reported-by: Aaron Lindsay <aaron@os.amperecomputing.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Tested-by: Aaron Lindsay <aaron@os.amperecomputing.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210213130325.14781-21-alex.bennee@linaro.org>
2020-12-15plugin: propagate errorsPaolo Bonzini1-2/+2
qemu_finish_machine_init currently can only exit QEMU if it fails. Prepare for giving it proper error propagation, and possibly for adding a plugin_add monitor command that calls an accelerator method. While at it, make all errors from plugin_load look the same. Reviewed-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-05-15qemu/plugin: Move !CONFIG_PLUGIN stubs altogetherPhilippe Mathieu-Daudé1-18/+15
Simplify the ifdef'ry by moving all stubs together. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20200510171119.20827-3-f4bug@amsat.org> Message-Id: <20200513173200.11830-3-alex.bennee@linaro.org>
2020-05-15qemu/plugin: Trivial code movementPhilippe Mathieu-Daudé1-16/+16
Move the qemu_plugin_event enum declaration earlier. This will make the next commit easier to review. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20200510171119.20827-2-f4bug@amsat.org> Message-Id: <20200513173200.11830-2-alex.bennee@linaro.org>
2019-10-28plugin: add core codeEmilio G. Cota1-0/+255
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>
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