On Thu, Jul 17, 2025 at 6:18 AM Lorenz Bauer <l...@isovalent.com> wrote: > > Hi Breno, > > Thanks for reaching out. > > On Thu, Jul 17, 2025 at 1:39 PM Breno Leitao <lei...@debian.org> wrote: > > > Should __pa_symbol() be used instead of virt_to_phys()? > > I'm not really well versed with mm in general. Looking around a bit I > found some explanation in [1]. Your suggested fix does make sense to > me based on that. > > Let me run the patch against bpf-ci and see what happens. > > 1: > https://lore.kernel.org/all/90667b2b7f773308318261f96ebefd1a67133c4c.1732464395.git.lu...@wunner.de/
Thanks for the link. Key quote: "arm64 maps the kernel in the vmalloc space." I think the map shouldn't be destroying linearity of kernel rodata. __pa_symbol() should work for start_BTF, but would be good to double check with Ard that the rest stays linear.
