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Re: [PATCH v2 0/3] plugins: add tb convenience functions


From: Luke Craig
Subject: Re: [PATCH v2 0/3] plugins: add tb convenience functions
Date: Fri, 31 Jan 2025 16:09:03 -0500

Hi Pierrick,

Thank you for your reply.

I have submitted a new patch series with commits signed off.

Thanks!
-Luke

On Fri, Jan 31, 2025, 2:53 PM Pierrick Bouvier <pierrick.bouvier@linaro.org> wrote:
Hi Luke,

On 1/31/25 09:57, Luke Craig wrote:
> This PR extends the plugin API with two functions which allow convenient access around tbs.
>
> The first, qemu_plugin_tb_size, provides a mechanism for determining the total size of a translation block.
>
> The second, qemu_plugin_tb_get_insn_by_vaddr, allows users to get a reference to an instruction by its virtual address rather than just its index.
>
> In response to feedback from Pierrick I have updated the implementation of qemu_plugin_tb_size.
>
> Additionally, I have added these functions to the insn.c test plugin in response to Alex's feedback.
>
> Lastly, I'll provide a reply to Alex's feeback (repeated below):
>
>> But the general comment is this is an example of tying the plugin API
>> too deeply with the internals of the translator. Why does a plugin need
>> to know what is an implementation detail?
>
> Finding the line between implementation detail and relevant to plugins is challenging, but I submitted this change because I found myself implementing these functions in plugins. If you'd like for me to enumerate examples where knowing the tb_size is relevant to analysis I'd be happy to submit some.
>
> Luke Craig (3):
>    plugin: extend API with qemu_plugin_tb_get_insn_by_vaddr
>    plugin: extend API with qemu_plugin_tb_size
>    plugins: extend insn test for new convenience functions
>

For all the series,
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>

>   include/qemu/qemu-plugin.h | 21 +++++++++++++++++++++
>   plugins/api.c              | 20 ++++++++++++++++++++
>   tests/tcg/plugins/insn.c   | 10 ++++++++++
>   3 files changed, 51 insertions(+)
>

To accept this series, commits should be signed off [1].
https://www.qemu.org/docs/master/devel/submitting-a-patch.html#patch-emails-must-include-a-signed-off-by-line

Thanks,
Pierrick

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