[PATCH riscv-next] riscv: bpf: Fix eBPF's exception tables

Palmer Dabbelt palmer at dabbelt.com
Wed Jan 19 13:46:17 PST 2022


On Wed, 19 Jan 2022 10:04:24 PST (-0800), Palmer Dabbelt wrote:
> On Wed, 19 Jan 2022 07:59:40 PST (-0800), Bjorn Topel wrote:
>> On Wed, 19 Jan 2022 at 16:42, Daniel Borkmann <daniel at iogearbox.net> wrote:
>>>
>> [...]
>>> > AFAIK, Jisheng's extable work is still in Palmer's for-next tree.
>>> >
>>> > Daniel/Alexei: This eBPF must follow commit 1f77ed9422cb ("riscv:
>>> > switch to relative extable and other improvements"), which is in
>>> > Palmer's tree. It cannot go via bpf-next.
>>>
>>> Thanks for letting us know, then lets route this fix via Palmer. Maybe he could
>>> also add Fixes tags when applying, so stable can pick it up later on.
>>>
>>
>> It shouldn't have a fixes-tag, since it's a new feature for RV. This
>> was adapting to that new feature. It hasn't made it upstream yet (I
>> hope!).
>
> That was actually just merged this morning into Linus' tree.  I'm still
> happy to take the fix via my tree, but you're welcome to take it via a
> BPF tree as well.  I'm juggling some other patches right now, just LMK
> what works on your end.
>
> IMO it should have a fixes tag: it's a bit of a grey area, but one
> something's in I generally try and put those tags on it.  That way folks
> who try and backport features at least have a shot at finding the fix
> (or at least, finding the fix without chasing around the bug ;)).
>
> I also tried poking you guys on the BPF Slack, but I don't really use it
> and I'm not sure if anyone else does either.

As per the slack discussion with Daniel, I've put this into the RISC-V 
for-next tree.

Thanks!



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