Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
MIME-Version: 1.0
References: <20190827085302.5197-1-jiaxun.yang@flygoat.com>
In-Reply-To: <20190827085302.5197-1-jiaxun.yang@flygoat.com>
From:   Matt Turner <mattst88@gmail.com>
Date:   Wed, 11 Sep 2019 23:30:38 -0700
Message-ID: <CAEdQ38EbtBsmAU0D8VtNkp=AMLo9XN43v3-OaEN-2n6zfGDMkw@mail.gmail.com>
Subject: Re: [PATCH 00/13] Modernize Loongson64 Machine
To:     Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc:     linux-mips@vger.kernel.org, Huacai Chen <chenhc@lemote.com>,
        Paul Burton <paul.burton@mips.com>,
        LKML <linux-kernel@vger.kernel.org>,
        =?UTF-8?B?57O757ufLeeOi+a0quiZjg==?= <wanghonghu@loongson.cn>,
        Paul Hua <paul.hua.gm@gmail.com>
Content-Type: text/plain; charset="UTF-8"
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Tue, Aug 27, 2019 at 1:53 AM Jiaxun Yang <jiaxun.yang@flygoat.com> wrote:
> Loongson have a long history of contributing their code to mainline kernel.
> However, it seems like recent years, they are focusing on maintain a kernel by themselves
> rather than contribute there code to the community.

Do you know more about this? I have a Loongson 3A3000 system that I
have never been able to make stable. I tried pulling patches out of
the glibc, binutils, gcc, and Linux repos I found at
https://github.com/loongson-community but my system still hardlocks,
preventing me from doing much of anything with it.

Do we know why critical looking toolchain patches like "Added misses
sync in mips_process_sync_loop for add sync before ll sc" [0] and "Fix
loads for Loongson3 to promoting stability" [1] have not been
submitted upstream?

I'm interested in supporting Loongson 3 in Gentoo, and the hardware
that has been given to me would be extremely useful for Gentoo's MIPS
port in general, but it's just not usable at all currently.

[0] https://github.com/loongson-community/gcc/commit/e7e3b0f956929f022caa01ed25a482495b11d575
[1] https://github.com/loongson-community/binutils-gdb/commit/2f0e91d2af6093097202fae3adab624ffa86a156