Re: [PATCH v3 0/6] fs: Add 9P filesystem support over virtio

[Kuan-Wei Chiu <visitorckw@gmail.com>]

Hi Tom,

On Wed, Oct 07, 2026 at 01:59:51PM -0600, Tom Rini wrote:
> On Wed, Oct 07, 2026 at 12:42:03PM -0600, Tom Rini wrote:
> > On Wed, 23 Sep 2026 21:29:56 +0000, Kuan-Wei Chiu wrote:
> > 
> > > Add 9P network filesystem support to U-Boot.
> > > 
> > > It allows U-Boot to directly mount host directories in virtualization
> > > environments via virtio. This is useful for loading kernel and
> > > initramfs images directly from the host into the VM during development
> > > and testing without having to rebuild disk images or set up a TFTP
> > > server.
> > > 
> > > [...]
> > 
> > Applied to u-boot/main, thanks!
> > 
> > [1/6] net: 9p: Add 9P2000.L protocol support
> >       commit: 48bb83195682d189273bdba813fa67f7f2760d59
> > [2/6] fs: 9p: Add 9P filesystem support
> >       commit: 9e14f904f8f12cd9df07e99a679453c8782e523b
> > [3/6] virtio: 9p: Add 9P transport driver
> >       commit: 09e668e32b4c14ce5c929d6cebfac75d2aefb90d
> > [4/6] doc: 9p: Add 9P filesystem documentation
> >       commit: 7d963df1bc38f5ae070ea8b96e03afc1ef7e23ed
> > [5/6] test: 9p: Add test for 9P filesystem
> >       commit: d446ef40b87d53ef7ac59ac9b1d79a16f0a065b0
> > [6/6] MAINTAINERS: Add entry for 9PFS
> >       commit: f6002d5e8018714ca80dcf1835c230c99c5090b3
> 
> Are there special permissions required for 9p to run? This works in
> Gitlab, but in Azure:
> test/py/tests/test_9p.py:46: in test_fs_9p
>     assert test_file_name in output
> E   assert '9p_test_small.txt' in "9P Error: No matching 9P transport device found for '-'"
> 
That's weird.  In theory, no special permissions should be required.
That error messag indicates that u-boot didn't detect any 9p transport
device. I'll take a look at it.

Regards,
Kuan-Wei