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From: Christian Schoenebeck <linux_oss@crudebyte.com>
To: Dominique Martinet <asmadeus@codewreck.org>,
	Eric Van Hensbergen <ericvh@gmail.com>
Cc: Greg Kurz <groug@kaod.org>, Latchesar Ionkov <lucho@ionkov.net>,
	Nikolay Kichukov <nikolay@oldum.net>,
	netdev@vger.kernel.org, v9fs-developer@lists.sourceforge.net
Subject: Re: [PATCH v4 00/12] remove msize limit in virtio transport
Date: Fri, 08 Jul 2022 13:18:40 +0200	[thread overview]
Message-ID: <1690835.L3irNgtgWz@silver> (raw)
In-Reply-To: <CAFkjPTngeFh=0mPVW-Yf1Sxkxp_HDNUeANndoYN3-eU9_rGLuQ@mail.gmail.com>

On Freitag, 8. Juli 2022 04:26:40 CEST Eric Van Hensbergen wrote:
> kvmtool might be the easiest I guess - I’m traveling right now but I can
> try and find some others.  The arm fast models have free versions that are
> downloadable as well.  I know I’ve seem some other less-traditional uses of
> virtio particularly in libos deployments but will take some time to rattle
> those from my memory.

Some examples would indeed be useful, thanks!

> On Fri, Jul 8, 2022 at 11:16 AM Dominique Martinet <asmadeus@codewreck.org>
> 
> wrote:
> > Eric Van Hensbergen wrote on Fri, Jul 08, 2022 at 10:44:45AM +1000:
> > > there are other 9p virtio servers - several emulation platforms support
> > 
> > it
> > 
> > > sans qemu.
> > 
> > Would you happen to have any concrete example?
> > I'd be curious if there are some that'd be easy to setup for test for
> > example; my current validation setup lacks a bit of diversity...
> > 
> > I found https://github.com/moby/hyperkit for OSX but that doesn't really
> > help me, and can't see much else relevant in a quick search

So that appears to be a 9p (@virtio-PCI) client for xhyve, with max. 256kB 
buffers <=> max. 68 virtio descriptors (memory segments) [1]:

/* XXX issues with larger buffers elsewhere in stack */
#define BUFSIZE (1 << 18)
#define MAXDESC (BUFSIZE / 4096 + 4)
#define VT9P_RINGSZ (BUFSIZE / 4096 * 4)

[1] https://github.com/moby/hyperkit/blob/master/src/lib/pci_virtio_9p.c#L27

But on xhyve side I don't see any 9p server implementation:
https://github.com/machyve/xhyve/search?q=9p
Maybe a 9p server is already implemented by Apple's Hypervisor framework. I 
don't find this documented anywhere though.

Best regards,
Christian Schoenebeck



  parent reply	other threads:[~2022-07-08 11:18 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-30 13:23 [PATCH v4 00/12] remove msize limit in virtio transport Christian Schoenebeck
2021-12-30 13:23 ` [PATCH v4 12/12] net/9p: allocate appropriate reduced message buffers Christian Schoenebeck
2022-04-02 14:05   ` Dominique Martinet
2022-04-03 11:29     ` Christian Schoenebeck
2022-04-03 12:37       ` Dominique Martinet
2022-04-03 14:00         ` Christian Schoenebeck
2021-12-30 13:23 ` [PATCH v4 08/12] net/9p: limit 'msize' to KMALLOC_MAX_SIZE for all transports Christian Schoenebeck
2021-12-30 13:23 ` [PATCH v4 04/12] 9p/trans_virtio: introduce struct virtqueue_sg Christian Schoenebeck
2021-12-30 13:23 ` [PATCH v4 01/12] net/9p: show error message if user 'msize' cannot be satisfied Christian Schoenebeck
2021-12-30 13:23 ` [PATCH v4 10/12] 9p: add P9_ERRMAX for 9p2000 and 9p2000.u Christian Schoenebeck
2021-12-30 13:23 ` [PATCH v4 11/12] net/9p: add p9_msg_buf_size() Christian Schoenebeck
2021-12-30 13:23 ` [PATCH v4 06/12] 9p/trans_virtio: support larger msize values Christian Schoenebeck
2021-12-30 13:23 ` [PATCH v4 02/12] 9p/trans_virtio: separate allocation of scatter gather list Christian Schoenebeck
2021-12-30 13:23 ` [PATCH v4 09/12] net/9p: split message size argument into 't_size' and 'r_size' pair Christian Schoenebeck
2021-12-30 13:23 ` [PATCH v4 07/12] 9p/trans_virtio: resize sg lists to whatever is possible Christian Schoenebeck
2021-12-30 13:23 ` [PATCH v4 05/12] net/9p: add trans_maxsize to struct p9_client Christian Schoenebeck
2021-12-30 13:23 ` [PATCH v4 03/12] 9p/trans_virtio: turn amount of sg lists into runtime info Christian Schoenebeck
2022-01-20 22:43 ` [PATCH v4 00/12] remove msize limit in virtio transport Nikolay Kichukov
2022-01-22 13:34   ` Christian Schoenebeck
2022-01-24 10:21     ` Nikolay Kichukov
2022-01-24 11:07       ` Dominique Martinet
2022-01-24 11:57         ` Christian Schoenebeck
2022-01-24 12:56           ` Dominique Martinet
2022-01-24 13:55             ` Christian Schoenebeck
2022-01-25  8:45           ` Nikolay Kichukov
2022-05-24  8:10         ` Nikolay Kichukov
2022-05-24 11:29           ` Christian Schoenebeck
2022-07-07 14:30 ` Christian Schoenebeck
     [not found]   ` <CAFkjPT=GAoViYd0E7CZQDq3ZjhmYT0DsBytfZXnE10JL0P8O-Q@mail.gmail.com>
2022-07-08  1:15     ` Dominique Martinet
     [not found]       ` <CAFkjPTngeFh=0mPVW-Yf1Sxkxp_HDNUeANndoYN3-eU9_rGLuQ@mail.gmail.com>
2022-07-08 11:18         ` Christian Schoenebeck [this message]
2022-07-08 11:40           ` Dominique Martinet
2022-07-08 13:00             ` Christian Schoenebeck

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