From 766e00bd570f54c8d08023a46cd3386e96ecd39f Mon Sep 17 00:00:00 2001 From: Rowan Hart Date: Fri, 27 Jun 2025 12:25:03 +0100 Subject: plugins: Add enforcement of QEMU_PLUGIN_CB flags in register R/W callbacks MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch adds functionality to enforce the requested QEMU_PLUGIN_CB_ flags level passed when registering a callback function using the plugins API. Each time a callback is about to be invoked, a thread-local variable will be updated with the level that callback requested. Then, called API functions (in particular, the register read and write API) will call qemu_plugin_get_cb_flags() to check the level is at least the level they require. Reviewed-by: Pierrick Bouvier Signed-off-by: Rowan Hart Message-ID: <20250624175351.440780-4-rowanbhart@gmail.com> Signed-off-by: Alex Bennée Message-ID: <20250627112512.1880708-8-alex.bennee@linaro.org> --- include/qemu/plugin.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/qemu/plugin.h') diff --git a/include/qemu/plugin.h b/include/qemu/plugin.h index 9726a9ebf3..f355c7cb8a 100644 --- a/include/qemu/plugin.h +++ b/include/qemu/plugin.h @@ -209,6 +209,21 @@ void qemu_plugin_user_prefork_lock(void); */ void qemu_plugin_user_postfork(bool is_child); +enum qemu_plugin_cb_flags tcg_call_to_qemu_plugin_cb_flags(int flags); + +static inline void qemu_plugin_set_cb_flags(CPUState *cpu, + enum qemu_plugin_cb_flags flags) +{ + assert(cpu); + cpu->neg.plugin_cb_flags = flags; +} + +static inline enum qemu_plugin_cb_flags qemu_plugin_get_cb_flags(void) +{ + assert(current_cpu); + return current_cpu->neg.plugin_cb_flags; +} + #else /* !CONFIG_PLUGIN */ static inline void qemu_plugin_add_opts(void) -- cgit 1.4.1