> -Original Message-
> From: Kevin Wolf [mailto:kw...@redhat.com]
> Sent: 16 October 2015 16:02
> To: Paul Durrant
> Cc: Fabio Fantoni; Stefano Stabellini; John Snow; Anthony Perard; qemu-
> de...@nongnu.org; xen-de...@lists.xen.org; qemu-block@nongnu.org
> Sub
> -Original Message-
> From: Kevin Wolf [mailto:kw...@redhat.com]
> Sent: 16 October 2015 15:04
> To: Paul Durrant
> Cc: Fabio Fantoni; Stefano Stabellini; John Snow; Anthony Perard; qemu-
> de...@nongnu.org; xen-de...@lists.xen.org; qemu-block@nongnu.org
> Sub
> -Original Message-
> From: Kevin Wolf [mailto:kw...@redhat.com]
> Sent: 16 October 2015 17:12
> To: Paul Durrant
> Cc: Fabio Fantoni; Stefano Stabellini; John Snow; Anthony Perard; qemu-
> de...@nongnu.org; xen-de...@lists.xen.org; qemu-block@nongnu.org
> Sub
> -Original Message-
> From: Kevin Wolf [mailto:kw...@redhat.com]
> Sent: 16 October 2015 17:43
> To: Paul Durrant
> Cc: Fabio Fantoni; Stefano Stabellini; John Snow; Anthony Perard; qemu-
> de...@nongnu.org; xen-de...@lists.xen.org; qemu-block@nongnu.org
> Sub
> -Original Message-
> From: Fabio Fantoni [mailto:fabio.fant...@m2r.biz]
> Sent: 14 October 2015 12:12
> To: Kevin Wolf; Stefano Stabellini
> Cc: John Snow; Anthony Perard; qemu-de...@nongnu.org; xen-
> de...@lists.xen.org; qemu-block@nongnu.org; Paul Durrant
> Sub
> -Original Message-
> From: Stefano Stabellini [mailto:sstabell...@kernel.org]
> Sent: 22 June 2017 23:15
> To: Paul Durrant <paul.durr...@citrix.com>
> Cc: xen-de...@lists.xenproject.org; qemu-de...@nongnu.org; qemu-
> bl...@nongnu.org; Stefano Stabellini
> -Original Message-
[snip]
> > > > +object_unparent(OBJECT(blkdev->iothread));
> > >
> > > Shouldn't this be object_unref?
> > >
> >
> > I don't think so. I think this is required to undo what was done by calling
> object_property_add_child() on the root object.
>
> Right, so if
> -Original Message-
> From: Stefano Stabellini [mailto:sstabell...@kernel.org]
> Sent: 27 June 2017 23:07
> To: Paul Durrant <paul.durr...@citrix.com>
> Cc: xen-de...@lists.xenproject.org; qemu-de...@nongnu.org; qemu-
> bl...@nongnu.org
> Subject: Re: [Xen-dev
> -Original Message-
> From: Roger Pau Monne
> Sent: 21 June 2017 10:18
> To: Stefano Stabellini <sstabell...@kernel.org>
> Cc: Paul Durrant <paul.durr...@citrix.com>; xen-de...@lists.xenproject.org;
> qemu-de...@nongnu.org; qemu-block@nongnu.org;
> -Original Message-
> From: Qemu-devel [mailto:qemu-devel-
> bounces+paul.durrant=citrix@nongnu.org] On Behalf Of Paul Durrant
> Sent: 21 June 2017 10:36
> To: Roger Pau Monne <roger@citrix.com>; Stefano Stabellini
> <sstabell...@kernel.org>
>
> -Original Message-
> From: Roger Pau Monne
> Sent: 21 June 2017 11:51
> To: Paul Durrant <paul.durr...@citrix.com>
> Cc: Stefano Stabellini <sstabell...@kernel.org>; Kevin Wolf
> <kw...@redhat.com>; qemu-block@nongnu.org; qemu-de...@nongnu.org;
>
> -Original Message-
> From: Stefano Stabellini [mailto:sstabell...@kernel.org]
> Sent: 20 June 2017 23:51
> To: Paul Durrant <paul.durr...@citrix.com>
> Cc: xen-de...@lists.xenproject.org; qemu-de...@nongnu.org; qemu-
> bl...@nongnu.org; Stefano Stabellini
If grant copy is available then it will always be used in preference to
persistent maps. In this case feature-persistent should not be advertized
to the frontend, otherwise it may needlessly copy data into persistently
granted buffers.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
The blkif protocol has had provision for negotiation of multi-page shared
rings for some time now and many guest OS have support in their frontend
drivers.
This patch makes the necessary modifications to xen-disk support a shared
ring up to order 4 (i.e. 16 pages).
Signed-off-by: Paul Durrant
Paul Durrant (3):
xen-disk: only advertize feature-persistent if grant copy is not
available
xen-disk: add support for multi-page shared rings
xen-disk: use an IOThread per instance
hw/block/trace-events | 7 ++
hw/block/xen_disk.c | 200
.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Anthony Perard <anthony.per...@citrix.com>
Cc: Kevin Wolf <kw...@redhat.com>
Cc: Max Reitz <mre...@redhat.com>
---
hw/block/trace-events | 7 +
Paul Durrant (3):
xen-disk: only advertize feature-persistent if grant copy is not
available
xen-disk: add support for multi-page shared rings
xen-disk: use an IOThread per instance
hw/block/trace-events | 7 ++
hw/block/xen_disk.c | 228
.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Anthony Perard <anthony.per...@citrix.com>
Cc: Kevin Wolf <kw...@redhat.com>
Cc: Max Reitz <mre...@redhat.com>
v2:
- explicitly acquire and release AI
The blkif protocol has had provision for negotiation of multi-page shared
rings for some time now and many guest OS have support in their frontend
drivers.
This patch makes the necessary modifications to xen-disk support a shared
ring up to order 4 (i.e. 16 pages).
Signed-off-by: Paul Durrant
> -Original Message-
> From: Paolo Bonzini [mailto:paolo.bonz...@gmail.com] On Behalf Of Paolo
> Bonzini
> Sent: 20 June 2017 17:08
> To: Paul Durrant <paul.durr...@citrix.com>; xen-de...@lists.xenproject.org;
> qemu-de...@nongnu.org; qemu-block@nongnu.org
> Cc:
> -Original Message-
> From: Paul Durrant [mailto:paul.durr...@citrix.com]
> Sent: 04 May 2018 14:56
> To: xen-de...@lists.xenproject.org; qemu-block@nongnu.org; qemu-
> de...@nongnu.org
> Cc: Paul Durrant <paul.durr...@citrix.com>; Stefano Stabellini
> <ss
Not all Xen environments support the xengnttab_grant_copy() operation.
E.g. where the OS is FreeBSD or Xen is older than 4.8.0.
This patch introduces an emulation of that operation using
xengnttab_map_domain_grant_refs() and memcpy() for those environments.
Signed-off-by: Paul Durrant <paul.d
Now that helpers are present in xen_backend, this patch removes open-coded
calls to libxengnttab from the xen_disk code.
This patch also fixes one whitspace error in the assignment of the
XenDevOps initialise method.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: S
Now that the (native or emulated) xen_be_copy_grant_refs() helper is
always available, the xen_disk code can be significantly simplified by
removing direct use of grant map and unmap operations.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini <
ent.
This patch is a purely cosmetic patch which makes sure there is a xendev
pointer on stack for any function where the pointer is need on multiple
occasions modified those functions to use it consistently.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini
be simplified without
regressing support for any environment. This series also performs
general cleanup of the code by introducing and consistently using
helper functions for calling into libxenttab.
Paul Durrant (8):
xen_backend: add grant table helpers
xen_disk: remove open-coded use of libxengnttab
There is no longer any use of this flag outside of the xen_backend code.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Anthony Perard <anthony.per...@citrix.com>
v2:
- New in v2
---
hw/xen/xen_backend.c
. No prior method requires access to the grant table.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Anthony Perard <anthony.per...@citrix.com>
v2:
- New in v2
---
hw/xen/xen_backe
Now that helpers are available in xen_backend, use them throughout all
Xen PV backends.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Anthony Perard <anthony.per...@citrix.com>
Cc: Greg Kurz <gr...@kaod.org>
Since xen_disk now always copies data to and from a guest there is no need
to maintain a vector entry corresponding to every page of a request.
This means there is less per-request state to maintain so the ioreq
structure can shrink significantly.
Signed-off-by: Paul Durrant <paul.d
Now that helpers are present in xen_backend, this patch removes open-coded
calls to libxengnttab from the xen_disk code.
This patch also fixes one whitspace error in the assignment of the
XenDevOps initialise method.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: S
Since xen_disk now always copies data to and from a guest there is no need
to maintain a vector entry corresponding to every page of a request.
This means there is less per-request state to maintain so the ioreq
structure can shrink significantly.
Signed-off-by: Paul Durrant <paul.d
. No prior method requires access to the grant table.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Anthony Perard <anthony.per...@citrix.com>
v2:
- New in v2
---
hw/xen/xen_backe
Not all Xen environments support the xengnttab_grant_copy() operation.
E.g. where the OS is FreeBSD or Xen is older than 4.8.0.
This patch introduces an emulation of that operation using
xengnttab_map_domain_grant_refs() and memcpy() for those environments.
Signed-off-by: Paul Durrant <paul.d
Now that the (native or emulated) xen_be_copy_grant_refs() helper is
always available, the xen_disk code can be significantly simplified by
removing direct use of grant map and unmap operations.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini <
ent.
This patch is a purely cosmetic patch which makes sure there is a xendev
pointer on stack for any function where the pointer is need on multiple
occasions modified those functions to use it consistently.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini
be simplified without
regressing support for any environment. This version also performs
general cleanup of the code by introducing and consistently using
helper functions for calling into libxenttab.
Paul Durrant (8):
xen_backend: add grant table helpers
xen_disk: remove open-coded use
Now that helpers are available in xen_backend, use them throughout all
Xen PV backends.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Anthony Perard <anthony.per...@citrix.com>
Cc: Greg Kurz <gr...@kaod.org>
There is no longer any use of this flag outside of the xen_backend code.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Anthony Perard <anthony.per...@citrix.com>
v2:
- New in v2
---
hw/xen/xen_backend.c
ent.
This patch is a purely cosmetic patch which makes sure there is a xendev
pointer on stack for any function where the pointer is need on multiple
occasions modified those functions to use it consistently.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini
There is no longer any use of this flag outside of the xen_backend code.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
Acked-by: Anthony Perard <anthony.per...@citrix.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
v2:
- New in v2
---
hw/xen/xen_bac
. No prior method requires access to the grant table.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Anthony Perard <anthony.per...@citrix.com>
v2:
- New in v2
---
hw/xen/xen_backe
Now that the (native or emulated) xen_be_copy_grant_refs() helper is
always available, the xen_disk code can be significantly simplified by
removing direct use of grant map and unmap operations.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
Acked-by: Anthony Perard <an
Not all Xen environments support the xengnttab_grant_copy() operation.
E.g. where the OS is FreeBSD or Xen is older than 4.8.0.
This patch introduces an emulation of that operation using
xengnttab_map_domain_grant_refs() and memcpy() for those environments.
Signed-off-by: Paul Durrant <paul.d
(previous patch #1) to remain unmodified
from v3 but still compile against Xen 4.7.
Paul Durrant (9):
xen: add a meaningful declaration of grant_copy_segment into
xen_common.h
xen_backend: add grant table helpers
xen_disk: remove open-coded use of libxengnttab
xen: remove other open
Now that helpers are available in xen_backend, use them throughout all
Xen PV backends.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
Acked-by: Anthony Perard <anthony.per...@citrix.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Greg Kurz <gr...@kaod.o
.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Anthony Perard <anthony.per...@citrix.com>
v4:
- New in v4
---
hw/block/xen_disk.c | 18 --
include/hw/xen/xen_common.h | 17 +++--
2
Now that helpers are present in xen_backend, this patch removes open-coded
calls to libxengnttab from the xen_disk code.
This patch also fixes one whitspace error in the assignment of the
XenDevOps initialise method.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
Acked-by: Anthony
> -Original Message-
> From: Paul Durrant [mailto:paul.durr...@citrix.com]
> Sent: 17 May 2018 16:36
> To: xen-de...@lists.xenproject.org; qemu-block@nongnu.org; qemu-
> de...@nongnu.org
> Cc: Paul Durrant <paul.durr...@citrix.com>; Stefano Stabellini
> <ss
Since xen_disk now always copies data to and from a guest there is no need
to maintain a vector entry corresponding to every page of a request.
This means there is less per-request state to maintain so the ioreq
structure can shrink significantly.
Signed-off-by: Paul Durrant <paul.d
> -Original Message-
> From: Anthony PERARD [mailto:anthony.per...@citrix.com]
> Sent: 16 May 2018 15:31
> To: Paul Durrant <paul.durr...@citrix.com>
> Cc: xen-de...@lists.xenproject.org; qemu-block@nongnu.org; qemu-
> de...@nongnu.org; Stefano Stabellini <sstabe
> -Original Message-
> From: Anthony PERARD [mailto:anthony.per...@citrix.com]
> Sent: 16 May 2018 15:14
> To: Paul Durrant <paul.durr...@citrix.com>
> Cc: xen-de...@lists.xenproject.org; qemu-block@nongnu.org; qemu-
> de...@nongnu.org; Stefano Stabellini <ss
> -Original Message-
> From: Anthony PERARD [mailto:anthony.per...@citrix.com]
> Sent: 02 May 2018 16:58
> To: Paul Durrant <paul.durr...@citrix.com>
> Cc: xen-de...@lists.xenproject.org; qemu-block@nongnu.org; qemu-
> de...@nongnu.org; Stefano Stabellini <sst
> -Original Message-
> From: Wei Liu [mailto:wei.l...@citrix.com]
> Sent: 01 May 2018 11:30
> To: Paul Durrant <paul.durr...@citrix.com>
> Cc: Roger Pau Monne <roger@citrix.com>; Kevin Wolf
> <kw...@redhat.com>; Stefano Stabellini <sstabell..
> -Original Message-
> From: Roger Pau Monne
> Sent: 30 April 2018 16:12
> To: Paul Durrant <paul.durr...@citrix.com>
> Cc: xen-de...@lists.xenproject.org; qemu-block@nongnu.org; qemu-
> de...@nongnu.org; Anthony Perard <anthony.per...@citrix.com>; Kevin
>
> -Original Message-
> From: Roger Pau Monne
> Sent: 30 April 2018 16:28
> To: Paul Durrant <paul.durr...@citrix.com>
> Cc: xen-de...@lists.xenproject.org; qemu-block@nongnu.org; qemu-
> de...@nongnu.org; Anthony Perard <anthony.per...@citrix.com>; Kevin
>
The grant copy operation was added to libxengnttab in Xen 4.8.0. If grant
copy is available then persistent grants will not be used.
The xen_disk source can be siginificantly simplified by removing this now
redundant code.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
---
Cc: S
this support for
older versions of Xen from QEMU reduces the size of the xen_disk source by
more than 350 lines (~25%). The majority of this is done in patches #1
and #2. Further simplifications are made in patch #3 and then some cosmetic
work is done in patch #4.
Paul Durrant (4):
block/xen_disk: remove
Since xen_disk now always copies data to and from a guest there is no need
to maintain a vector entry corresponding to every page of a request.
This means there is less per-request state to maintain so the ioreq
structure can shrink significantly.
Signed-off-by: Paul Durrant <paul.d
The grant copy operation was added to libxengnttab in Xen 4.8.0. If grant
copy is available then data from the guest will be copied rather than
mapped.
The xen_disk source can be significantly simplified by removing this now
redundant code.
Signed-off-by: Paul Durrant <paul.durr...@citrix.
> -Original Message-
> From: Kevin Wolf [mailto:kw...@redhat.com]
> Sent: 02 November 2018 11:04
> To: Tim Smith
> Cc: xen-de...@lists.xenproject.org; qemu-de...@nongnu.org; qemu-
> bl...@nongnu.org; Anthony Perard ; Paul Durrant
> ; Stefano Stabellini ;
> Max R
> -Original Message-
> From: Tim Smith [mailto:tim.sm...@citrix.com]
> Sent: 02 November 2018 10:01
> To: xen-de...@lists.xenproject.org; qemu-de...@nongnu.org; qemu-
> bl...@nongnu.org
> Cc: Anthony Perard ; Kevin Wolf
> ; Paul Durrant ; Stefano
> Stabellini ; Max
> -Original Message-
> From: Tim Smith [mailto:tim.sm...@citrix.com]
> Sent: 02 November 2018 10:01
> To: xen-de...@lists.xenproject.org; qemu-de...@nongnu.org; qemu-
> bl...@nongnu.org
> Cc: Anthony Perard ; Kevin Wolf
> ; Paul Durrant ; Stefano
> Stabellin
> -Original Message-
> From: Tim Smith [mailto:tim.sm...@citrix.com]
> Sent: 02 November 2018 10:01
> To: xen-de...@lists.xenproject.org; qemu-de...@nongnu.org; qemu-
> bl...@nongnu.org
> Cc: Anthony Perard ; Kevin Wolf
> ; Paul Durrant ; Stefano
> Stabellini ; Max
> -Original Message-
> From: Markus Armbruster [mailto:arm...@redhat.com]
> Sent: 05 November 2018 15:58
> To: Paul Durrant
> Cc: 'Kevin Wolf' ; Tim Smith ;
> Stefano Stabellini ; qemu-block@nongnu.org; qemu-
> de...@nongnu.org; Max Reitz ; Anth
> -Original Message-
> From: Markus Armbruster [mailto:arm...@redhat.com]
> Sent: 05 November 2018 15:58
> To: Paul Durrant
> Cc: 'Kevin Wolf' ; Tim Smith ;
> Stefano Stabellini ; qemu-block@nongnu.org; qemu-
> de...@nongnu.org; Max Reitz ; Anth
> -Original Message-
> From: Kevin Wolf [mailto:kw...@redhat.com]
> Sent: 08 November 2018 15:21
> To: Paul Durrant
> Cc: 'Markus Armbruster' ; Anthony Perard
> ; Tim Smith ; Stefano
> Stabellini ; qemu-block@nongnu.org; qemu-
> de...@nongnu.or
> -Original Message-
> From: Paul Durrant
> Sent: 08 November 2018 16:44
> To: Paul Durrant ; 'Kevin Wolf'
>
> Cc: Stefano Stabellini ; qemu-block@nongnu.org;
> Tim Smith ; qemu-de...@nongnu.org; 'Markus
> Armbruster' ; Anthony Perard
> ; xen-de...@list
> -Original Message-
> From: Xen-devel [mailto:xen-devel-boun...@lists.xenproject.org] On Behalf
> Of Paul Durrant
> Sent: 08 November 2018 15:44
> To: 'Kevin Wolf'
> Cc: Stefano Stabellini ; qemu-block@nongnu.org;
> Tim Smith ; qemu-de...@nongnu.org; 'Markus
&g
> -Original Message-
> From: Alex Bennée [mailto:alex.ben...@linaro.org]
> Sent: 16 January 2019 12:14
> To: peter.mayd...@linaro.org
> Cc: qemu-de...@nongnu.org; Alex Bennée ; Stefano
> Stabellini ; Anthony Perard
> ; Paul Durrant ; Kevin
> Wolf ; Max Reitz
> -Original Message-
> From: Xen-devel [mailto:xen-devel-boun...@lists.xenproject.org] On Behalf
> Of Paul Durrant
> Sent: 16 January 2019 12:04
> To: 'Philippe Mathieu-Daudé' ; qemu-de...@nongnu.org
> Cc: Kevin Wolf ; Stefano Stabellini
> ; qemu-block@nongnu.org;
> -Original Message-
> From: Philippe Mathieu-Daudé [mailto:phi...@redhat.com]
> Sent: 16 January 2019 12:01
> To: qemu-de...@nongnu.org
> Cc: Paul Durrant ; Anthony Perard
> ; Max Reitz ; qemu-
> bl...@nongnu.org; Stefano Stabellini ; xen-
> de...@lists.xe
> -Original Message-
> From: Alex Bennée [mailto:alex.ben...@linaro.org]
> Sent: 17 January 2019 08:21
> To: Andrew Cooper
> Cc: peter.mayd...@linaro.org; Kevin Wolf ; Stefano
> Stabellini ; open list:Block layer core bl...@nongnu.org>; qemu-de...@nongnu.org; Max R
Some frontend drivers will handle dynamic resizing of PV disks, so set up
the BlockDevOps resize_cb() method during xen_block_realize() to allow
this to be done.
Signed-off-by: Paul Durrant
---
Cc: Stefan Hajnoczi
Cc: Stefano Stabellini
Cc: Anthony Perard
Cc: Kevin Wolf
Cc: Max Reitz
xen_be_init() function.
Subsequent patches will flesh-out the functionality of these objects.
Signed-off-by: Paul Durrant
Reviewed-by: Anthony Perard
---
Cc: Stefano Stabellini
Cc: "Michael S. Tsirkin"
Cc: Marcel Apfelbaum
Cc: Paolo Bonzini
Cc: Richard Henderson
Cc: Eduardo Ha
is destroyed.
Correspondingly the legacy backend scan for 'qdisk' is removed.
After this patch is applied the legacy 'xen_disk' code is redundant. It
will be removed by a subsequent patch.
Signed-off-by: Paul Durrant
Reviewed-by: Anthony Perard
---
Cc: Kevin Wolf
Cc: Max Reitz
Cc: Stefano
The legacy PV backend infrastructure provides functions to bind, unbind
and send notifications to event channnels. Similar functionality will be
required by XenDevice implementations so this patch adds the necessary
support.
Signed-off-by: Paul Durrant
Reviewed-by: Anthony Perard
---
Cc
' field/variable names with 'request', and then does necessary
fix-up to adhere to coding style.
Function names are not modified by this patch. They will be dealt with in
a subsequent patch.
No functional change.
Signed-off-by: Paul Durrant
Acked-by: Anthony Perard
---
Cc: Stefan Hajnoczi
Cc
are
mapped/bound and used to set up the dataplane.
Signed-off-by: Paul Durrant
---
Cc: Stefano Stabellini
Cc: Anthony Perard
Cc: Kevin Wolf
Cc: Max Reitz
v3:
- Add missing return statement to xen_block_realize()
- Set device name to 'vbd' now the backend is functional
- Add an unplug handler
This backend has now been replaced by the 'xen-qdisk' XenDevice.
Signed-off-by: Paul Durrant
Acked-by: Anthony Perard
---
Cc: Kevin Wolf
Cc: Max Reitz
Cc: Stefano Stabellini
---
hw/block/Makefile.objs |1 -
hw/block/xen_disk.c| 1011
> -Original Message-
> From: Anthony PERARD [mailto:anthony.per...@citrix.com]
> Sent: 11 December 2018 15:17
> To: Paul Durrant
> Cc: qemu-de...@nongnu.org; qemu-block@nongnu.org; xen-
> de...@lists.xenproject.org; Kevin Wolf ; Max Reitz
> ; Stefano Stabellini
>
This is a purely cosmetic patch that substitutes the old 'struct XenBlkDev'
name with 'XenBlockDataPlane' and 'blkdev' field/variable names with
'dataplane', and then does necessary fix-up to adhere to coding style.
No functional change.
Signed-off-by: Paul Durrant
Acked-by: Anthony Perard
-by: Paul Durrant
Reviewed-by: Anthony Perard
---
Cc: Kevin Wolf
Cc: Max Reitz
Cc: Stefano Stabellini
v3:
- Remove unnecessary instances of local_err
v2:
- Don't crash when xen_block_disconnect() fails
- Check xs_unwatch() for error
- Add new_watch() and free_watch() utility functions
- Use
is also added to make sure the xenstore areas are
cleaned up if QEMU terminates without devices being unrealized.
[1] The 'scanf' functions are actually not yet needed, but they will be
needed by code delivered in subsequent patches.
Signed-off-by: Paul Durrant
Reviewed-by: Anthony Perard
harder.
Signed-off-by: Paul Durrant
Acked-by: Anthony Perard
---
Cc: Stefano Stabellini
Cc: Stefan Hajnoczi
Cc: Kevin Wolf
Cc: Max Reitz
---
MAINTAINERS|1 +
hw/block/dataplane/xen-block.c | 1019
2 files changed, 1020 insertions
. These will
be modified by subsequent patches. A typedef for XenBlockDataPlane
has been added to the header (based on the old struct XenBlkDev name
for the moment) so that the old names don't need to leak out of the
dataplane code.
Signed-off-by: Paul Durrant
Reviewed-by: Anthony Perard
---
Cc
. It therefore seems reasonable that I become a maintainer of
the Xen code.
Signed-off-by: Paul Durrant
Acked-by: Anthony Perard
Acked-by: Stefano Stabellini
---
Cc: Paolo Bonzini
v2:
- Fix typo
---
MAINTAINERS | 1 +
1 file changed, 1 insertion(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index
> -Original Message-
> From: Anthony PERARD [mailto:anthony.per...@citrix.com]
> Sent: 11 December 2018 15:25
> To: Paul Durrant
> Cc: qemu-de...@nongnu.org; qemu-block@nongnu.org; xen-
> de...@lists.xenproject.org
> Subject: Re: [PATCH v3 07/18] xen: add ev
-devel/2018-11/msg00259.html
[2]
http://xenbits.xen.org/gitweb/?p=people/pauldu/qemu.git;a=shortlog;h=refs/heads/qom29
Paul Durrant (18):
xen: re-name XenDevice to XenLegacyDevice...
xen: introduce new 'XenBus' and 'XenDevice' object hierarchy
xen: introduce 'xen-block', 'xen-disk' and 'xen-cdrom
to re-name parts of existing code to avoid
name clashes. The re-named 'legacy' infrastructure will be removed once all
backends have been ported to the new framework.
This patch is purely cosmetic. No functional change.
Signed-off-by: Paul Durrant
Acked-by: Anthony Perard
---
Cc: Stefano Stabellini
the backend 'online' key to 0.
NOTE: This patch only adds the framework. A subsequent patch will add a
creator function for xen-block devices.
Signed-off-by: Paul Durrant
---
Cc: Anthony Perard
Cc: Stefano Stabellini
Cc: Anthony Perard
v3:
- Use a xenstore transaction in enumeration code
> -Original Message-
> From: Anthony PERARD [mailto:anthony.per...@citrix.com]
> Sent: 11 December 2018 15:30
> To: Paul Durrant
> Cc: qemu-de...@nongnu.org; qemu-block@nongnu.org; xen-
> de...@lists.xenproject.org; Kevin Wolf ; Stefano
> Stabellini ; Stefan H
The legacy PV backend infrastructure provides functions to map, unmap and
copy pages granted by frontends. Similar functionality will be required
by XenDevice implementations so this patch adds the necessary support.
Signed-off-by: Paul Durrant
Reviewed-by: Anthony Perard
---
Cc: Stefano
This is a purely cosmetic patch that purges remaining use of 'blk' and
'ioreq' in local function names, and then makes sure all functions are
prefixed with 'xen_block_'.
No functional change.
Signed-off-by: Paul Durrant
Acked-by: Anthony Perard
---
Cc: Stefano Stabellini
Cc: Stefan Hajnoczi
().
NOTE: The code is still not yet built. Further transformations will be
required to make it correctly interface to the new XenBus/XenDevice
framework. They will be delivered in a subsequent patch.
Signed-off-by: Paul Durrant
Acked-by: Anthony Perard
---
Cc: Stefano Stabellini
Cc: Stefan
] https://xenbits.xen.org/docs/unstable/man/xen-vbd-interface.7.html
Signed-off-by: Paul Durrant
Reviewed-by: Anthony Perard
---
Cc: Kevin Wolf
Cc: Max Reitz
Cc: Stefano Stabellini
v3:
- Fix vdev parsing again, and vdev formatting this time
- Remove an unnecessary local_err
v2:
- Fix
> -Original Message-
> From: Xen-devel [mailto:xen-devel-boun...@lists.xenproject.org] On Behalf
> Of Anthony PERARD
> Sent: 13 December 2018 11:34
> To: Olaf Hering
> Cc: Kevin Wolf ; Stefano Stabellini
> ; open list:Block layer core bl...@nongnu.org>; qemu-de...@nongnu.org; Max Reitz ;
> -Original Message-
> From: Kevin Wolf [mailto:kw...@redhat.com]
> Sent: 13 December 2018 11:52
> To: Paul Durrant
> Cc: qemu-de...@nongnu.org; qemu-block@nongnu.org; xen-
> de...@lists.xenproject.org; Max Reitz ; Stefano
> Stabellini
> Subject: Re: [PATCH v4 1
()/
blk_io_unplug() in an amount proportional to the number which were
already in flight at the time we started reading the ring.
Signed-off-by: Tim Smith
Re-based and commit comment adjusted.
Signed-off-by: Paul Durrant
---
Cc: Stefan Hajnoczi
Cc: Stefano Stabellini
Cc: Anthony Perard
Cc: Kevin Wolf
-based and commit comment adjusted.
Signed-off-by: Paul Durrant
---
Cc: Stefan Hajnoczi
Cc: Stefano Stabellini
Cc: Anthony Perard
Cc: Kevin Wolf
Cc: Max Reitz
---
hw/block/dataplane/xen-block.c | 56 ++
1 file changed, 18 insertions(+), 38 deletions
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