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Wed, 27 Oct 2021 07:31:54 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Dan Cross Date: Wed, 27 Oct 2021 10:31:18 -0400 Message-ID: Subject: Re: [9fans] v9fs vs mmap (not quite SOLVED) To: 9fans <9fans@9fans.net> Content-Type: multipart/alternative; boundary="000000000000a6e9a105cf5674a5" Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: a6424dae-3732-11ec-996d-bfe79262ac05 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UYjA2NWY0ZGY2N2E4YmFiOS1NMTk0N2E0NDk2MmRjYWRhYzM0YjAz?= =?UTF-8?B?YmFjPg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> Content-Transfer-Encoding: 7bit List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M1947a44962dcadac34b03bac:1:O-_E1kehSSpzMrJO0jMSGTykmekw2DH7d9Xsi97W6TY --000000000000a6e9a105cf5674a5 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, Oct 27, 2021 at 10:11 AM Richard Miller <9fans@hamnavoe.com> wrote: > > But is it not possible that the FPGA tools don't > > have the same issues with mmap that e.g. Go does? > > 1. Some of the fpga tools are closed-source so I can't check with > confidence that they will never try to use mmap. > Or even more confusing, it may use mmap() in a way that is irrelevant to what filesystem it or the data lives on. 2. The go compiler is open-source so it was a simple matter to make > an experimental variant on linux which uses read/write instead of > mmap (as it does on plan 9). I still get the bus error code=3D0x2 > when running this over v9fs. Hence the remaining v9fs problem is > not mmap related. Well, good luck getting it all going! - Dan C. ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Tb065f4df67a8bab9-M1947a= 44962dcadac34b03bac Delivery options: https://9fans.topicbox.com/groups/9fans/subscription --000000000000a6e9a105cf5674a5 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
On Wed, Oct 27, 2021 at 10:11= AM Richard Miller <9fans@hamnavoe= .com> wrote:
> But is it not possible that the FPGA = tools don't
> have the same issues with mmap that e.g. Go does?

1. Some of the fpga tools are closed-source so I can't check with
confidence that they will never try to use mmap.
Or even more confusing, it may use mmap() in a way that is ir= relevant to what filesystem it or the data lives on.

=
2. The go compiler is open-source so it was a simple matter to make
an experimental variant on linux which uses read/write instead of
mmap (as it does on plan 9). I still get the bus error code=3D0x2
when running this over v9fs. Hence the remaining v9fs problem is
not mmap related.

Well, good luck getting= it all going!

        - Dan= C.

= --000000000000a6e9a105cf5674a5--