[PULL] virtio: fixes

[PULL] virtio: fixes

[Michael S. Tsirkin]

The following changes since commit 15ade5d2e7775667cf191cf2f94327a4889f8b9d:

  Linux 5.1-rc4 (2019-04-07 14:09:59 -1000)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus

for you to fetch changes up to cf94db21905333e610e479688add629397a4b384:

  virtio: Honour 'may_reduce_num' in vring_create_virtqueue (2019-04-08 17:05:52 -0400)

----------------------------------------------------------------
virtio: fixes, reviewers

Several fixes, add more reviewers to the list

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

----------------------------------------------------------------
Cornelia Huck (1):
      virtio: Honour 'may_reduce_num' in vring_create_virtqueue

Longpeng (1):
      virtio_pci: fix a NULL pointer reference in vp_del_vqs

Michael S. Tsirkin (1):
      MAiNTAINERS: add Paolo, Stefan for virtio blk/scsi

 MAINTAINERS                        | 15 ++++++++++++++-
 drivers/virtio/virtio_pci_common.c |  8 +++++---
 drivers/virtio/virtio_ring.c       |  2 ++
 include/linux/virtio_ring.h        |  2 +-
 4 files changed, 22 insertions(+), 5 deletions(-)

Re: [PULL] virtio: fixes

[pr-tracker-bot]

The pull request you sent on Wed, 10 Apr 2019 09:18:58 -0400:

> git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/ed79cc87302bf7fbc87f05d655b998f866b4fed8

Thank you!

-- 
Deet-doot-dot, I am a bot.
https://korg.wiki.kernel.org/userdoc/prtracker

Re: [PULL] virtio: fixes

[pr-tracker-bot]

The pull request you sent on Wed, 6 Feb 2019 14:32:56 -0500:

> git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/b0314565da2b95e73feab484467ad171fcce6dff

Thank you!

-- 
Deet-doot-dot, I am a bot.
https://korg.wiki.kernel.org/userdoc/prtracker

[PULL] virtio: fixes

[Michael S. Tsirkin]

The following changes since commit 49a57857aeea06ca831043acbb0fa5e0f50602fd:

  Linux 5.0-rc3 (2019-01-21 13:14:44 +1300)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus

for you to fetch changes up to 9c0644ee4aa8792f1e60a2b014b4710faaddafeb:

  virtio: drop internal struct from UAPI (2019-02-05 15:29:48 -0500)

----------------------------------------------------------------
virtio: fixes

A small fix for a uapi header, and a fix for VDPA for non-x86 guests.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

----------------------------------------------------------------
Michael S. Tsirkin (1):
      virtio: drop internal struct from UAPI

Tiwei Bie (1):
      virtio: support VIRTIO_F_ORDER_PLATFORM

 drivers/virtio/virtio_ring.c       | 15 ++++++++++++++-
 include/uapi/linux/virtio_config.h |  6 ++++++
 include/uapi/linux/virtio_ring.h   | 10 ----------
 3 files changed, 20 insertions(+), 11 deletions(-)

[PULL] virtio fixes

[Rusty Russell]

The following changes since commit 7ec62d421bdf29cb31101ae2689f7f3a9906289a:

  Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs (2014-09-10 14:04:17 -0700)

are available in the git repository at:


  git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux.git tags/fixes-for-linus

for you to fetch changes up to f49819560f53b7f3a596a8ea2e6764dc86695b62:

  virtio-rng: skip reading when we start to remove the device (2014-09-11 22:28:38 +0930)

----------------------------------------------------------------
virtio-rng corner case fixes, with cc:stable.
Survived a few days in linux-next.

----------------------------------------------------------------
Amos Kong (2):
      virtio-rng: fix stuck of hot-unplugging busy device
      virtio-rng: skip reading when we start to remove the device

 drivers/char/hw_random/virtio-rng.c | 7 +++++++
 1 file changed, 7 insertions(+)

[PULL] virtio fixes

[Rusty Russell]

The following changes since commit d5fe85af85367d5892e4308f596de4e2a5fb9017:

  Merge tag 'pm+acpi-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm (2013-05-16 15:12:34 -0700)

are available in the git repository at:


  git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux.git tags/fixes-for-linus

for you to fetch changes up to 6407d75afd08545f2252bb39806ffd3f10c7faac:

  virtio_console: fix uapi header (2013-05-20 10:25:28 +0930)

----------------------------------------------------------------
A build fix and a uapi exposure fix.  The build fix is later than
I liked, but my first version broke linux-next due to overzealous
header clean.

Thanks,
Rusty.

----------------------------------------------------------------
Michael S. Tsirkin (1):
      virtio_console: fix uapi header

Rusty Russell (1):
      Hoist memcpy_fromiovec/memcpy_toiovec into lib/

 drivers/misc/vmw_vmci/Kconfig           |  2 +-
 drivers/misc/vmw_vmci/vmci_queue_pair.c |  2 +-
 include/linux/socket.h                  |  2 --
 include/linux/uio.h                     |  3 ++
 include/uapi/linux/virtio_console.h     |  2 +-
 lib/Makefile                            |  2 +-
 lib/iovec.c                             | 53 +++++++++++++++++++++++++++++++++
 net/core/iovec.c                        | 50 -------------------------------
 8 files changed, 60 insertions(+), 56 deletions(-)
 create mode 100644 lib/iovec.c

[PULL] virtio fixes

[Rusty Russell]

The following changes since commit e84e7a56a3aa2963db506299e29a5f3f09377f9b:

  virtio: rng: disallow multiple device registrations, fixes crashes (2013-03-08 11:30:43 +1100)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux.git tags/fixes-for-linus

for you to fetch changes up to 9ba5c80b1aea8648a3efe5f22dc1f7cacdfbeeb8:

  virtio: console: add locking around c_ovq operations (2013-03-30 14:25:46 +1030)

----------------------------------------------------------------
One reversion, a tiny leak fix, and a cc:stable locking fix, in two parts.

Thanks,
Rusty.

----------------------------------------------------------------
Amit Shah (2):
      virtio: console: rename cvq_lock to c_ivq_lock
      virtio: console: add locking around c_ovq operations

Satoru Takeuchi (1):
      hw_random: free rng_buffer at module exit

Sjur Brændeland (1):
      Revert "virtio_console: Initialize guest_connected=true for rproc_serial"

 drivers/char/hw_random/core.c |    9 +++++++++
 drivers/char/virtio_console.c |   44 ++++++++++++++++++++++++++++-------------
 2 files changed, 39 insertions(+), 14 deletions(-)

[PULL] virtio fixes

[Rusty Russell]

The following changes since commit 584f79046780e10cb24367a691f8c28398a00e84:

  Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging (2011-04-20 18:18:19 -0700)

are available in the git repository at:

  ssh://master.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus.git master

Amit Shah (3):
      virtio: Decrement avail idx on buffer detach
      virtio_pci: Prevent double-free of pci regions after device hot-unplug
      virtio: console: Enable call to hvc_remove() on console port remove

 drivers/char/virtio_console.c |   11 -----------
 drivers/virtio/virtio_pci.c   |   15 ++++++++-------
 drivers/virtio/virtio_ring.c  |    1 +
 3 files changed, 9 insertions(+), 18 deletions(-)

[PULL] virtio fixes

[Rusty Russell]

The following changes since commit afe8a887550f7cc24eb16449670b93f6b43c32d8:

  Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze (2011-02-02 10:23:58 +1100)

are available in the git repository at:

  ssh://master.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus.git master

Amit Shah (2):
      virtio: console: Wake up outvq on host notifications
      virtio: console: Update Copyright

 drivers/tty/hvc/virtio_console.c |   18 +++++++++++++++---
 include/linux/virtio_console.h   |    3 ++-
 2 files changed, 17 insertions(+), 4 deletions(-)

[PULL] virtio fixes

[Rusty Russell]

(There are two net fixes which depend on this which will go via DaveM, so
 please pull soon).

The following changes since commit 7e27d6e778cd87b6f2415515d7127eba53fe5d02:
  Linus Torvalds (1):
        Linux 2.6.35-rc3

are available in the git repository at:

  ssh://master.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6.git virtio

Michael S. Tsirkin (2):
      virtio: return ENOMEM on out of memory
      virtio-pci: disable msi at startup

 drivers/pci/pci.c            |    1 +
 drivers/virtio/virtio_pci.c  |    3 +++
 drivers/virtio/virtio_ring.c |    2 +-
 3 files changed, 5 insertions(+), 1 deletions(-)

commit 686d363786a53ed28ee875b84ef24e6d5126ef6f
Author: Michael S. Tsirkin <mst@redhat.com>
Date:   Thu Jun 10 18:16:11 2010 +0300

    virtio: return ENOMEM on out of memory
    
    add_buf returns ring size on out of memory,
    this is not what devices expect.
    
    Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
    Acked-by: Amit Shah <amit.shah@redhat.com>
    Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
    Cc: stable@kernel.org # .34.x

 drivers/virtio/virtio_ring.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

commit b03214d559471359e2a85ae256686381d0672f29
Author: Michael S. Tsirkin <mst@redhat.com>
Date:   Wed Jun 23 22:49:06 2010 -0600

    virtio-pci: disable msi at startup
    
    virtio-pci resets the device at startup by writing to the status
    register, but this does not clear the pci config space,
    specifically msi enable status which affects register
    layout.
    
    This breaks things like kdump when they try to use e.g. virtio-blk.
    
    Fix by forcing msi off at startup. Since pci.c already has
    a routine to do this, we export and use it instead of duplicating code.
    
    Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
    Tested-by: Vivek Goyal <vgoyal@redhat.com>
    Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
    Cc: linux-pci@vger.kernel.org
    Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
    Cc: stable@kernel.org

 drivers/pci/pci.c           |    1 +
 drivers/virtio/virtio_pci.c |    3 +++
 2 files changed, 4 insertions(+), 0 deletions(-)

Re: [PULL] virtio fixes

[Rusty Russell]

On Thu, 22 Oct 2009 10:01:43 am Linus Torvalds wrote:
> 
> On Mon, 19 Oct 2009, Rusty Russell wrote:
> > 
> >   ssh://master.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus.git master
> 
> "Already up-to-date.".
> 
> Forgot to push?

Oops, overzealous master.kernel.org space reclamation from me :

This time for sure!
Rusty/

The following changes since commit 2fdc246aaf9a7fa088451ad2a72e9119b5f7f029:
  Linus Torvalds (1):
        Merge branch 'for-linus' of git://git.kernel.org/.../bp/bp

are available in the git repository at:

  ssh://master.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus.git master

Christian Borntraeger (1):
      virtio: let header files include virtio_ids.h

Christoph Hellwig (1):
      virtio_blk: revert QUEUE_FLAG_VIRT addition

Rusty Russell (1):
      virtio_blk: Revert serial number support

Uwe Kleine-König (2):
      move virtballoon_remove to .devexit.text
      move virtrng_remove to .devexit.text

 Documentation/lguest/lguest.c       |    1 -
 drivers/block/virtio_blk.c          |   39 ++--------------------------------
 drivers/char/hw_random/virtio-rng.c |    3 +-
 drivers/char/virtio_console.c       |    1 -
 drivers/net/virtio_net.c            |    1 -
 drivers/virtio/virtio_balloon.c     |    3 +-
 include/linux/Kbuild                |    1 +
 include/linux/virtio_9p.h           |    1 +
 include/linux/virtio_balloon.h      |    1 +
 include/linux/virtio_blk.h          |    5 +---
 include/linux/virtio_console.h      |    1 +
 include/linux/virtio_net.h          |    1 +
 include/linux/virtio_rng.h          |    1 +
 net/9p/trans_virtio.c               |    1 -
 14 files changed, 12 insertions(+), 48 deletions(-)

Re: [PULL] virtio fixes

[Linus Torvalds]

On Mon, 19 Oct 2009, Rusty Russell wrote:
> 
>   ssh://master.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus.git master

"Already up-to-date.".

Forgot to push?

		Linus

[PULL] virtio fixes

[Rusty Russell]

(Sorry for delay, recent absences, but all been in linux-next a week now)

The following changes since commit 2fdc246aaf9a7fa088451ad2a72e9119b5f7f029:
  Linus Torvalds (1):
        Merge branch 'for-linus' of git://git.kernel.org/.../bp/bp

are available in the git repository at:

  ssh://master.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus.git master

Christian Borntraeger (1):
      virtio: let header files include virtio_ids.h

Christoph Hellwig (1):
      virtio_blk: revert QUEUE_FLAG_VIRT addition

Rusty Russell (1):
      virtio_blk: Revert serial number support

Uwe Kleine-König (2):
      move virtballoon_remove to .devexit.text
      move virtrng_remove to .devexit.text

 Documentation/lguest/lguest.c       |    1 -
 drivers/block/virtio_blk.c          |   39 ++--------------------------------
 drivers/char/hw_random/virtio-rng.c |    3 +-
 drivers/char/virtio_console.c       |    1 -
 drivers/net/virtio_net.c            |    1 -
 drivers/virtio/virtio_balloon.c     |    3 +-
 include/linux/Kbuild                |    1 +
 include/linux/virtio_9p.h           |    1 +
 include/linux/virtio_balloon.h      |    1 +
 include/linux/virtio_blk.h          |    5 +---
 include/linux/virtio_console.h      |    1 +
 include/linux/virtio_net.h          |    1 +
 include/linux/virtio_rng.h          |    1 +
 net/9p/trans_virtio.c               |    1 -
 14 files changed, 12 insertions(+), 48 deletions(-)


commit d5a01175aa25ef30a99545f09e0a2828a226d3cd
Author: Christoph Hellwig <hch@lst.de>
Date:   Fri Sep 4 22:44:42 2009 +0200

    virtio_blk: revert QUEUE_FLAG_VIRT addition
    
    It seems like the addition of QUEUE_FLAG_VIRT caueses major performance
    regressions for Fedora users:
    
    	https://bugzilla.redhat.com/show_bug.cgi?id=509383
    	https://bugzilla.redhat.com/show_bug.cgi?id=505695
    
    while I can't reproduce those extreme regressions myself I think the flag
    is wrong.
    
    Rationale:
    
      QUEUE_FLAG_VIRT expands to QUEUE_FLAG_NONROT which casus the queue
      unplugged immediately.  This is not a good behaviour for at least
      qemu and kvm where we do have significant overhead for every
      I/O operations.  Even with all the latested speeups (native AIO,
      MSI support, zero copy) we can only get native speed for up to 128kb
      I/O requests we already are down to 66% of native performance for 4kb
      requests even on my laptop running the Intel X25-M SSD for which the
      QUEUE_FLAG_NONROT was designed.
      If we ever get virtio-blk overhead low enough that this flag makes
      sense it should only be set based on a feature flag set by the host.
    
    Signed-off-by: Christoph Hellwig <hch@lst.de>
    Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

 drivers/block/virtio_blk.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

commit 6ff87d1f188f65a51c28595e9ad16183cbd58d94
Author: Christian Borntraeger <borntraeger@de.ibm.com>
Date:   Wed Sep 30 11:17:21 2009 +0200

    virtio: let header files include virtio_ids.h
    
    Rusty,
    
    commit 3ca4f5ca73057a617f9444a91022d7127041970a
        virtio: add virtio IDs file
    moved all device IDs into a single file. While the change itself is
    a very good one, it can break userspace applications. For example
    if a userspace tool wanted to get the ID of virtio_net it used to
    include virtio_net.h. This does no longer work, since virtio_net.h
    does not include virtio_ids.h.
    This patch moves all "#include <linux/virtio_ids.h>" from the C
    files into the header files, making the header files compatible with
    the old ones.
    
    In addition, this patch exports virtio_ids.h to userspace.
    
    CC: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
    Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
    Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

 Documentation/lguest/lguest.c       |    1 -
 drivers/block/virtio_blk.c          |    1 -
 drivers/char/hw_random/virtio-rng.c |    1 -
 drivers/char/virtio_console.c       |    1 -
 drivers/net/virtio_net.c            |    1 -
 drivers/virtio/virtio_balloon.c     |    1 -
 include/linux/Kbuild                |    1 +
 include/linux/virtio_9p.h           |    1 +
 include/linux/virtio_balloon.h      |    1 +
 include/linux/virtio_blk.h          |    1 +
 include/linux/virtio_console.h      |    1 +
 include/linux/virtio_net.h          |    1 +
 include/linux/virtio_rng.h          |    1 +
 net/9p/trans_virtio.c               |    1 -
 14 files changed, 7 insertions(+), 7 deletions(-)

commit ef728ac6296b8ae36791c7644e92b7bc75c0fd88
Author: Rusty Russell <rusty@rustcorp.com.au>
Date:   Mon Oct 19 12:58:28 2009 -0600

    virtio_blk: Revert serial number support
    
    This reverts "Add serial number support for virtio_blk, V4a".
    
    Turns out that virtio_pci, lguest and s/390 all have an 8 bit limit
    on virtio config space, so noone could ever use this.
    
    This is coming back later in a cleaner form.
    
    Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
    Cc: john cooper <john.cooper@redhat.com>
    Cc: Jens Axboe <jens.axboe@oracle.com>

 drivers/block/virtio_blk.c |   37 +++----------------------------------
 include/linux/virtio_blk.h |    4 ----
 2 files changed, 3 insertions(+), 38 deletions(-)

commit 22b4b8fe00398cb66cb9a95d3f0c21b0155e5421
Author: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Date:   Thu Oct 1 10:28:33 2009 +0200

    move virtballoon_remove to .devexit.text
    
    The function virtballoon_remove is used only wrapped by __devexit_p so
    define it using __devexit.
    
    Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
    Acked-by: Sam Ravnborg <sam@ravnborg.org>
    Acked-by: Michael S. Tsirkin <mst@redhat.com>
    Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

 drivers/virtio/virtio_balloon.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

commit 360390725dce2961ac35be5f59640f9d44f03d25
Author: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Date:   Thu Oct 1 10:28:35 2009 +0200

    move virtrng_remove to .devexit.text
    
    The function virtrng_remove is used only wrapped by __devexit_p so define
    it using __devexit.
    
    Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
    Acked-by: Sam Ravnborg <sam@ravnborg.org>
    Cc: Rusty Russell <rusty@rustcorp.com.au>
    Cc: Michael S. Tsirkin <mst@redhat.com>
    Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
    Cc: linux-kernel@vger.kernel.org
    Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

 drivers/char/hw_random/virtio-rng.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)