Displaying 20 results from an estimated 900 matches similar to: "[PATCH] vhost-scsi: remove incorrect memory barrier"
2019 Apr 16
2
[PATCH] vhost/scsi: drop unnecessary smp_mb__after_atomic()
The vhost_scsi.ko code used several atomic variables at one point.
Later they were dropped or converted to regular ints protected by a
mutex.
The commit that made these changes left an unused smp_mb__after_atomic()
in vhost_scsi_set_endpoint(). It was previously used after incrementing
vhost_scsi->vhost_ref_cnt but this field has been dropped:
- atomic_inc(&vs->vhost_ref_cnt);
2019 Apr 16
2
[PATCH] vhost/scsi: drop unnecessary smp_mb__after_atomic()
The vhost_scsi.ko code used several atomic variables at one point.
Later they were dropped or converted to regular ints protected by a
mutex.
The commit that made these changes left an unused smp_mb__after_atomic()
in vhost_scsi_set_endpoint(). It was previously used after incrementing
vhost_scsi->vhost_ref_cnt but this field has been dropped:
- atomic_inc(&vs->vhost_ref_cnt);
2019 Apr 17
0
[PATCH] vhost/scsi: drop unnecessary smp_mb__after_atomic()
On 2019/4/16 ??6:47, Stefan Hajnoczi wrote:
> The vhost_scsi.ko code used several atomic variables at one point.
> Later they were dropped or converted to regular ints protected by a
> mutex.
>
> The commit that made these changes left an unused smp_mb__after_atomic()
> in vhost_scsi_set_endpoint(). It was previously used after incrementing
> vhost_scsi->vhost_ref_cnt but
2023 Mar 21
8
[PATCH v2 0/7] vhost-scsi: Fix crashes and management op hangs
The following patches were made over Linus tree. The patches fix 3
issues:
1. If a user performs LIO LUN unmapping before the endpoint has been
cleared then we can end up trying to free a bogus tmf struct if the
TMF is still exucuting when we do the unmap.
2. If vhost_scsi_setup_vq_cmds fails we can leave the tpg->vhost_scsi
pointer set and we can end up trying to access a freed struct.
3.
2023 Feb 23
1
[PATCH 3/5] vhost-scsi: Remove vhost_scsi_mutex from port link/unlink
We don't need the vhost_scsi_mutex in vhost_scsi_port_link and
vhost_scsi_port_unlink because LIO has a refcount on the se_tpg for us,
so it can't be removed while these functions are called. This removes the
vhost_scsi_mutex from those functions to avoid cases where we are adding
or removing LUNs to vhost-deviceA but are stuck waiting on the
vhost_scsi_mutex because we are running
2023 Feb 23
5
[PATCH 0/5] vhost-scsi: Fix management operation hangs
The following patches were made over Linus tree and also apply over
mst tree's vhost branch. The patches fix an issue where management
operations like LUN mapping/unmapping and device addition hang for 30
seconds or up to N minutes depending on the device.
The problem is that we use a global mutex to protect the list of tpgs
but we hold that mutex during those management operations. So if you
2020 Sep 24
0
[PATCH 3/8] vhost scsi: alloc cmds per vq instead of session
On Mon, Sep 21, 2020 at 01:23:03PM -0500, Mike Christie wrote:
> We currently are limited to 256 cmds per session. This leads to problems
> where if the user has increased virtqueue_size to more than 2 or
> cmd_per_lun to more than 256 vhost_scsi_get_tag can fail and the guest
> will get IO errors.
>
> This patch moves the cmd allocation to per vq so we can easily match
>
2013 Mar 05
3
[PATCH] tcm_vhost: Add hotplug/hotunplug support
In commit 365a7150094 ([SCSI] virtio-scsi: hotplug support for
virtio-scsi), hotplug support is added to virtio-scsi.
This patch adds hotplug and hotunplug support to tcm_vhost.
You can create or delate a LUN in targetcli to hotplug or hotplug a LUN
in guest.
Signed-off-by: Asias He <asias at redhat.com>
---
drivers/vhost/tcm_vhost.c | 171 ++++++++++++++++++++++++++++++++++++++++++++--
2013 Mar 05
3
[PATCH] tcm_vhost: Add hotplug/hotunplug support
In commit 365a7150094 ([SCSI] virtio-scsi: hotplug support for
virtio-scsi), hotplug support is added to virtio-scsi.
This patch adds hotplug and hotunplug support to tcm_vhost.
You can create or delate a LUN in targetcli to hotplug or hotplug a LUN
in guest.
Signed-off-by: Asias He <asias at redhat.com>
---
drivers/vhost/tcm_vhost.c | 171 ++++++++++++++++++++++++++++++++++++++++++++--
2012 Jul 30
0
[PATCH] tcm_vhost: Post-merge review changes requested by MST
From: Nicholas Bellinger <nab at linux-iscsi.org>
This patch contains the post RFC-v5 (post-merge) changes, this includes:
- Add locking comment
- Move vhost_scsi_complete_cmd ahead of TFO callbacks in order to
drop forward declarations
- Drop extra '!= NULL' usage in vhost_scsi_complete_cmd_work()
- Change vhost_scsi_*_handle_kick() to use pr_debug
- Fix possible race in
2012 Jul 30
0
[PATCH] tcm_vhost: Post-merge review changes requested by MST
From: Nicholas Bellinger <nab at linux-iscsi.org>
This patch contains the post RFC-v5 (post-merge) changes, this includes:
- Add locking comment
- Move vhost_scsi_complete_cmd ahead of TFO callbacks in order to
drop forward declarations
- Drop extra '!= NULL' usage in vhost_scsi_complete_cmd_work()
- Change vhost_scsi_*_handle_kick() to use pr_debug
- Fix possible race in
2012 Jul 26
2
[RFC-v5] tcm_vhost: Initial merge for vhost level target fabric driver
From: Nicholas Bellinger <nab at linux-iscsi.org>
Hello KVM + QEMU folks,
This is -v5 of the in-flight tcm_vhost fabric driver for KVM host virtualized
target support using the in-kernel storage stack with for-3.6 code.
The changes since -v4 have been pretty minimal. A new GET_ABI_VERSION ioctl
has been added as requested by Anthony & Co, and after some back <-> forth on
the
2012 Jul 26
2
[RFC-v5] tcm_vhost: Initial merge for vhost level target fabric driver
From: Nicholas Bellinger <nab at linux-iscsi.org>
Hello KVM + QEMU folks,
This is -v5 of the in-flight tcm_vhost fabric driver for KVM host virtualized
target support using the in-kernel storage stack with for-3.6 code.
The changes since -v4 have been pretty minimal. A new GET_ABI_VERSION ioctl
has been added as requested by Anthony & Co, and after some back <-> forth on
the
2013 May 03
5
[PATCH 0/5] vhost-scsi cleanup
Asias He (5):
vhost-scsi: Remove unnecessary forward struct vhost_scsi declaration
vhost-scsi: Rename struct vhost_scsi *s to *vs
vhost-scsi: Make func indention more consistent
vhost-scsi: Rename struct tcm_vhost_tpg *tv_tpg to *tpg
vhost-scsi: Rename struct tcm_vhost_cmd *tv_cmd to *cmd
drivers/vhost/scsi.c | 469 +++++++++++++++++++++++++++------------------------
1 file changed,
2013 May 03
5
[PATCH 0/5] vhost-scsi cleanup
Asias He (5):
vhost-scsi: Remove unnecessary forward struct vhost_scsi declaration
vhost-scsi: Rename struct vhost_scsi *s to *vs
vhost-scsi: Make func indention more consistent
vhost-scsi: Rename struct tcm_vhost_tpg *tv_tpg to *tpg
vhost-scsi: Rename struct tcm_vhost_cmd *tv_cmd to *cmd
drivers/vhost/scsi.c | 469 +++++++++++++++++++++++++++------------------------
1 file changed,
2013 Apr 25
9
[PATCH v11 0/4] tcm_vhost hotplug
Changes in v11
- Drop change log histroy in commit log
Changes in v10
- Drop comments about lun
- Add Enable VIRTIO_SCSI_F_HOTPLUG to this series
Changes in v9
- Drop tcm_vhost_check_feature
- Add Refactor the lock nesting rule to this sereis
Asias He (4):
tcm_vhost: Refactor the lock nesting rule
tcm_vhost: Add hotplug/hotunplug support
tcm_vhost: Add ioctl to get and set events missed
2013 Apr 25
9
[PATCH v11 0/4] tcm_vhost hotplug
Changes in v11
- Drop change log histroy in commit log
Changes in v10
- Drop comments about lun
- Add Enable VIRTIO_SCSI_F_HOTPLUG to this series
Changes in v9
- Drop tcm_vhost_check_feature
- Add Refactor the lock nesting rule to this sereis
Asias He (4):
tcm_vhost: Refactor the lock nesting rule
tcm_vhost: Add hotplug/hotunplug support
tcm_vhost: Add ioctl to get and set events missed
2013 Apr 25
6
[PATCH v10 0/4] tcm_vhost hotplug
Asias He (4):
tcm_vhost: Refactor the lock nesting rule
tcm_vhost: Add hotplug/hotunplug support
tcm_vhost: Add ioctl to get and set events missed flag
tcm_vhost: Enable VIRTIO_SCSI_F_HOTPLUG
drivers/vhost/tcm_vhost.c | 262 +++++++++++++++++++++++++++++++++++++++++++---
drivers/vhost/tcm_vhost.h | 13 +++
2 files changed, 259 insertions(+), 16 deletions(-)
--
1.8.1.4
2013 Apr 25
6
[PATCH v10 0/4] tcm_vhost hotplug
Asias He (4):
tcm_vhost: Refactor the lock nesting rule
tcm_vhost: Add hotplug/hotunplug support
tcm_vhost: Add ioctl to get and set events missed flag
tcm_vhost: Enable VIRTIO_SCSI_F_HOTPLUG
drivers/vhost/tcm_vhost.c | 262 +++++++++++++++++++++++++++++++++++++++++++---
drivers/vhost/tcm_vhost.h | 13 +++
2 files changed, 259 insertions(+), 16 deletions(-)
--
1.8.1.4
2013 Feb 05
0
[PATCH v3] tcm_vhost: Multi-target support
In order to take advantages of Paolo's multi-queue virito-scsi, we need
multi-target support in tcm_vhost first. Otherwise all the requests go
to one queue and other queues are idle.
This patch makes:
1. All the targets under the wwpn is seen and can be used by guest.
2. No need to pass the tpgt number in struct vhost_scsi_target to
tcm_vhost.ko. Only wwpn is needed.
3. We can always pass