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[PATCH v3 0/7] Xen transport for 9pfs frontend driver

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Hi all,

This patch series implements a new transport for 9pfs, aimed at Xen
systems.

The transport is based on a traditional Xen frontend and backend drivers
pair. This patch series implements the frontend, which typically runs in
a regular unprivileged guest.

I also sent a series that implements the backend in userspace in QEMU,
which typically runs in Dom0 (but could also run in a another guest).

The frontend complies to the Xen transport for 9pfs specification
version 1, available here:

http://xenbits.xen.org/gitweb/?p=xen.git;a=blob_plain;f=docs/misc/9pfs.markdown;hb=HEAD


Changes in v3:
- add full copyright header to trans_xen.c
- rename ring->ring to ring->data
- handle gnttab_grant_foreign_access errors
- remove ring->bytes
- wrap long lines
- add reviewed-by

Changes in v2:
- use XEN_PAGE_SHIFT instead of PAGE_SHIFT
- remove unnecessary initializations
- fix error paths
- fix memory allocations for 64K kernels
- simplify p9_xen_create and p9_xen_close
- use virt_XXX barriers
- set status = REQ_STATUS_ERROR inside the p9_xen_response loop
- add in-code comments


Stefano Stabellini (7):
      xen: import new ring macros in ring.h
      xen: introduce the header file for the Xen 9pfs transport protocol
      xen/9pfs: introduce Xen 9pfs transport driver
      xen/9pfs: connect to the backend
      xen/9pfs: send requests to the backend
      xen/9pfs: receive responses
      xen/9pfs: build 9pfs Xen transport driver

 include/xen/interface/io/9pfs.h |  40 ++++
 include/xen/interface/io/ring.h | 131 +++++++++++
 net/9p/Kconfig                  |   8 +
 net/9p/Makefile                 |   4 +
 net/9p/trans_xen.c              | 497 ++++++++++++++++++++++++++++++++++++++++
 5 files changed, 680 insertions(+)
 create mode 100644 include/xen/interface/io/9pfs.h
 create mode 100644 net/9p/trans_xen.c


Cheers,

Stefano

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[PATCH v3 0/7] Xen transport for 9pfs frontend driver Stefano Stabellini <sstabellini@kernel.org> - 2017-03-14 01:00 +0100
  [PATCH v3 5/7] xen/9pfs: send requests to the backend Stefano Stabellini <sstabellini@kernel.org> - 2017-03-14 01:00 +0100
  [PATCH v3 3/7] xen/9pfs: introduce Xen 9pfs transport driver Stefano Stabellini <sstabellini@kernel.org> - 2017-03-14 01:00 +0100
    Re: [PATCH v3 3/7] xen/9pfs: introduce Xen 9pfs transport driver Juergen Gross <jgross@suse.com> - 2017-03-14 07:30 +0100
      Re: [PATCH v3 3/7] xen/9pfs: introduce Xen 9pfs transport driver Stefano Stabellini <sstabellini@kernel.org> - 2017-03-14 21:30 +0100
  [PATCH v3 7/7] xen/9pfs: build 9pfs Xen transport driver Stefano Stabellini <sstabellini@kernel.org> - 2017-03-14 01:00 +0100
    Re: [PATCH v3 7/7] xen/9pfs: build 9pfs Xen transport driver Juergen Gross <jgross@suse.com> - 2017-03-14 08:10 +0100
  [PATCH v3 4/7] xen/9pfs: connect to the backend Stefano Stabellini <sstabellini@kernel.org> - 2017-03-14 01:00 +0100
    Re: [PATCH v3 4/7] xen/9pfs: connect to the backend Juergen Gross <jgross@suse.com> - 2017-03-14 07:50 +0100
      Re: [PATCH v3 4/7] xen/9pfs: connect to the backend Stefano Stabellini <sstabellini@kernel.org> - 2017-03-14 22:30 +0100
        Re: [PATCH v3 4/7] xen/9pfs: connect to the backend Juergen Gross <jgross@suse.com> - 2017-03-15 06:10 +0100
          Re: [PATCH v3 4/7] xen/9pfs: connect to the backend Stefano Stabellini <sstabellini@kernel.org> - 2017-03-15 19:50 +0100
            Re: [PATCH v3 4/7] xen/9pfs: connect to the backend Juergen Gross <jgross@suse.com> - 2017-03-16 07:00 +0100
              Re: [PATCH v3 4/7] xen/9pfs: connect to the backend Stefano Stabellini <sstabellini@kernel.org> - 2017-03-16 19:10 +0100
                Re: [PATCH v3 4/7] xen/9pfs: connect to the backend Juergen Gross <jgross@suse.com> - 2017-03-17 06:00 +0100
                Re: [Xen-devel] [PATCH v3 4/7] xen/9pfs: connect to the backend Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> - 2017-03-17 16:20 +0100
                Re: [Xen-devel] [PATCH v3 4/7] xen/9pfs: connect to the backend Stefano Stabellini <sstabellini@kernel.org> - 2017-03-17 22:10 +0100
  [PATCH v3 1/7] xen: import new ring macros in ring.h Stefano Stabellini <sstabellini@kernel.org> - 2017-03-14 01:00 +0100
  Re: [PATCH v3 0/7] Xen transport for 9pfs frontend driver Greg Kurz <groug@kaod.org> - 2017-03-15 19:30 +0100
    Re: [PATCH v3 0/7] Xen transport for 9pfs frontend driver Stefano Stabellini <sstabellini@kernel.org> - 2017-03-15 20:30 +0100

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