Re: Help wanted improving Rust support for RISC-V

I can loan you my VisionFive 2 SBC for an extended period if that would help. Just send me a good mailing address, and I can ship it on Monday.

-Nate


-------- Original Message --------
On 11/16/24 9:44 AM,  <tuexen@freebsd.org> wrote:

>  > On 16. Nov 2024, at 15:26, Alan Somers <asomers@freebsd.org> wrote:
>  >
>  >
>  >
>  > On Sat, Nov 16, 2024, 2:21 AM Tom Jones <thj@freebsd.org> wrote:
>  >
>  >
>  > On Fri, Nov 15, 2024, at 23:47, Alan Somers wrote:
>  >> I want to improve the state of Rust on FreeBSD in general, and RISC-V
>  >> in particular.  My plan is:
>  >>
>  >> * Assemble a corpus of crates heavy on OS stuff (like Nix and Tokio)
>  >> and ensure that their tests pass on Riscv FreeBSD.
>  >> * Update libc's ABI to FreeBSD 12, finally eliminating the need for
>  >> COMPAT_11 on riscv to run Rust programs.
>  >> * Ensure that the corpus of crates still passes their tests.
>  >> * Convince the libc maintainers to use the FreeBSD 12 ABI, for riscv only.
>  >> * After a full Rust release cycle (at least 6 weeks), and maybe two,
>  >> if there are no reports of breakage, and if Poudriere looks good, use
>  >> that as justification to raise libc's ABI for all architectures.
>  >>
>  >> But in order to do any of this, I need access to riscv hardware.  A
>  >> virtual instance at Scaleway[^1][^2] would be ideal, but I don't know
>  >> if FreeBSD can run there.  Has anybody tried it?  Failing that, I
>  >> would need to either acquire some hardware myself, or borrow access to
>  >> somebody else's.  Or, convince some other developer to do the work
>  >> himself.  But I won't be able to help very much if I don't have direct
>  >> access.
>  >>
>  >> Can anybody on this list help me get some access?
>  >
>  > I can’t help with scaleway, it sounds like an interesting choice.
>  Hi Alan,
>  neither can I... Depending on the resources you are willing to spend,
>  https://eu.mouser.com/ProductDetail/SiFive/HF105-001?qs=Imq1NPwxi75JBw6ulD0quQ%3D%3D
>  might be an option.
>  
>  Best regards
>  Michael
>  >
>  > I have no idea of the current state of easily and affordable available hardware. The visonfive 2 might be a good choice, there has been a lot of work in the year since I last tried it.
>  >
>  > https://adventurist.me/posts/00315
>  >
>  > It’s probably still the easiest to get hold of if a little underwhelming.
>  >
>  > You don’t mention qemu, is there some reason you can’t start there?
>  >
>  > - Tom
>  >
>  > I haven't had good luck with using qemu-user-static to emulate armv7.
>  
>  
>