On Fri, Dec 14, 2018 at 12:08:22 -0500, Emilio G. Cota wrote:
> On Fri, Dec 14, 2018 at 15:57:32 +0000, Aaron Lindsay wrote:
(snip)
> > I added a function to the user-facing plugin API in my own version of
> > Pavel's plugin patchset to clear all existing plugin instrumentation,
(snip)
> I think the following API call would do what you need:
>
> typedef int (*qemu_plugin_reset_cb_t)(qemu_plugin_id_t id);
> void qemu_plugin_reset(qemu_plugin_id_t id, qemu_plugin_reset_cb_t cb);
>
> (or maybe qemu_plugin_reinstall?)
An alternative is to track the TBs that a plugin has inserted
instrumentation into, and only flush those. This would require
us to do an additional hash table insert when adding a
direct callback, but it allow us to avoid exporting tb_flush indirectly
to plugins, which could be abused by malicious plugins to perform
a DoS attack.
I'll look into this.
E.
