Re: [PATCH 0/8] unwind, arm64: add sframe unwinder for kernel

Song Liu
2025-01-30T19:18:21Z

Hi Roman,

On Thu, Jan 30, 2025 at 11:01 AM Roman Gushchin
<roman.gushchin@linux.dev> wrote:
>
> On Thu, Jan 30, 2025 at 10:34:09AM -0800, Song Liu wrote:
> > On Thu, Jan 30, 2025 at 9:59 AM Song Liu <song@kernel.org> wrote:
> > >
> > > I missed this set before sending my RFC set. If this set works well, we
> > > won't need the other set. I will give this one a try.
> >
> > I just realized that llvm doesn't support sframe yet. So we (Meta) still
> > need some sframe-less approach before llvm supports sframe.
> >
> > IIRC, Google also uses llvm to compile the kernel. Weinan, would
> > you mind share your thoughts on how we can adopt this before
> > llvm supports sframe? (compile arm64 kernel with gcc?)
>
> Hi Song,
>
> the plan is to start the work on adding sframe support to llvm
> in parallel to landing these changes upstream. From the initial
> assessment it shouldn't be too hard.

Thanks for the information!

Song