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Date:      Sat, 10 Jun 2023 09:01:40 +0300
From:      Toomas Soome <tsoome@me.com>
To:        Alexey Dokuchaev <danfe@freebsd.org>
Cc:        Warner Losh <imp@bsdimp.com>, Kyle Evans <kevans@freebsd.org>, src-committers <src-committers@freebsd.org>, "<dev-commits-src-all@freebsd.org>" <dev-commits-src-all@freebsd.org>, dev-commits-src-main@freebsd.org
Subject:   Re: git: ce5a210997da - main - openzfs: arm64: implement kfpu_begin/kfpu_end
Message-ID:  <C8856004-472C-4945-BA6E-5CA2568343B2@me.com>
In-Reply-To: <ZIQBk91TcdqlbtLf@FreeBSD.org>
References:  <202304261724.33QHOl6x001199@gitrepo.freebsd.org> <CANCZdfoY-ZnHp%2BH3J=iB7VS%2B1tO0ViZKWeexr0bicgTeckQCZg@mail.gmail.com> <ZIQBk91TcdqlbtLf@FreeBSD.org>

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> On 10. Jun 2023, at 07:52, Alexey Dokuchaev <danfe@freebsd.org> wrote:
>=20
> 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
>>>=20
>>>  openzfs: arm64: implement kfpu_begin/kfpu_end
>>>=20
>>>  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.
>>>=20
>>>  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.
>>=20
>> 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
>=20
> 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?
>=20
> ./danfe


The normal (illumos) ZFS is struggling to get updates [from OpenZFS]. I =
know, because I=E2=80=99m 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=E2=80=A6=20

rgds,
toomas




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