Re: git: ce5a210997da - main - openzfs: arm64: implement kfpu_begin/kfpu_end

From: Toomas Soome <tsoome_at_me.com>
Date: Sat, 10 Jun 2023 06:01:40 UTC 

> On 10. Jun 2023, at 07:52, Alexey Dokuchaev <danfe@freebsd.org> wrote:
> 
> On Wed, Apr 26, 2023 at 12:02:19PM -0600, Warner Losh wrote:
>> On Wed, Apr 26, 2023 at 11:24???AM Kyle Evans wrote:
>>> commit ce5a210997da3c4064cfe162e760379f1fa8b587
>>> 
>>>  openzfs: arm64: implement kfpu_begin/kfpu_end
>>> 
>>>  This is part one of a fix for booting with ZFS on arm64 using
>>>  accelerated checksum implementations.  Checksum benchmarking will
>>>  attempt to use the FPU, so we currently panic quickly on boot.
>>> 
>>>  Note that _STANDALONE is special-cased here, but ideally we
>>>  wouldn't be building the code that uses kfpu_begin()/kfpu_end()
>>>  at all in the loader environment.
>> 
>> Yes. As noted elsewhere, the upstream is a mess. There's no way to
>> say "I only want the generic implementation" for these functions.
>> So we went through some crazy hoops to try to disable that... only
>> to run into a buzz-saw of upstream changes that broke the crazy hoops
> 
> Sorry for not replying earlier, but given the situation with ZoL and
> how they keep breaking stuff for us, how feasible would it be to switch
> back to normal (illumos) ZFS?
> 
> ./danfe


The normal (illumos) ZFS is struggling to get updates [from OpenZFS]. I know, because I’m one who is trying to get them done:D

Situation is not encouraging, but I think the only way to make this situation better is to try to work with OpenZFS team to improve how the things are done… 

rgds,
toomas