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contrib/plugins: avoid hanging program

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Although we asks for instructions per second we work in quanta and
that cannot be 0. Fail to load the plugin instead and report the
minimum IPS we can handle.

Reported-by: Elisha Hollander <just4now666666@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240916085400.1046925-19-alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée 2024-09-16 09:54:00 +01:00
parent f2505260b3
commit 8148fb56c7
1 changed files with 6 additions and 0 deletions
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6
contrib/plugins/ips.c
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@ -152,6 +152,12 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
vcpus = qemu_plugin_scoreboard_new(sizeof(vCPUTime));
max_insn_per_quantum = max_insn_per_second / NUM_TIME_UPDATE_PER_SEC;
if (max_insn_per_quantum == 0) {
fprintf(stderr, "minimum of %d instructions per second needed\n",
NUM_TIME_UPDATE_PER_SEC);
return -1;
}
time_handle = qemu_plugin_request_time_control();
g_assert(time_handle);