Re: QEMU Sashiko

["Philippe Mathieu-Daudé" <philmd@oss.qualcomm.com>]

On 29/10/26 00:32, Alistair wrote:
> Hey,
> 
> Sashiko just merged initial support for QEMU [1].
> 
> For those who don't know, Sashiko is a LLM powered review bot used for
> the Linux kernel. When people send patches to LKML Sashiko reviews the
> patches and responds to the mailing list with any issue that it finds.
> 
> Like all LLM tools, it is both useful, but also verbose, prone to
> hallucinations and misses things (like humans do to though). The
> general consensus in the kernel community is that it's a useful and
> valuable tool.
> 
> Sashiko is just a Rust application and prompts, it doesn't include a
> LLM and you can use a range of different LLM backends.
> 
> Google sponsors the development and runs a Linux instance. So you can
> see the hosted Linux instance here: https://sashiko.dev/ and it uses
> Gemini for the LLM which Google pays for. It seems like there is also a
> GCC one starting up.
> 
> The cool thing about Sashiko though is you can run it locally as well,
> so you can use it to test your patches before sending them to LKML, as
> long as you have a LLM backend you can use.
> 
> So, now that Sashiko also supports QEMU there are two exciting use
> cases:
> 
> 1. Developers can run it locally to review their patches before sending
> them to the list. This can catch issues before sending patches
> 
> 2. Maintainers can run an instance to review patches. How you set this
> up depends on the maintainer and how many tokens you have. Pointing it
> at the list directly and running it for all patches might be too much,
> but some combination of manually triggering it for certain patches
> seems to work well. The Settings.toml file can be setup based on what
> you want to do.
> 
> The hope with this is to save maintainers time as Sashiko can catch
> issues without requiring much time from a maintainer.
> 
> QEMU support in Sashiko is very new, so it will take some tweaking to
> improve things, but it is at least a good starting place.
> 
> 1:
> https://github.com/sashiko-dev/sashiko/commit/e432036bba7ab10d4517385916e6c834d8176f70

I'm glad you added projects/qemu/ directory there; some time ago
Zhao and myself tried to leverage LLM to review QEMU and reduce
maintenance burden but there was little community interest and
some negative feedback so we didn't pursued on the list.
https://lore.kernel.org/qemu-devel/afxbDjQEWJZ6P9oe@redhat.com/
https://lore.kernel.org/qemu-devel/arpINtziWCbjENeo@intel.com/