platform/kernel/linux-starfive.git
4 years agovdpa/mlx5: Fix uninitialised variable in core/mr.c
Alex Dewar [Thu, 6 Aug 2020 18:56:15 +0000 (19:56 +0100)]
vdpa/mlx5: Fix uninitialised variable in core/mr.c

If the kernel is unable to allocate memory for the variable dmr then
err will be returned without being set. Set err to -ENOMEM in this
case.

Fixes: 94abbccdf291 ("vdpa/mlx5: Add shared memory registration code")
Addresses-Coverity: ("Uninitialized variables")
Signed-off-by: Alex Dewar <alex.dewar@gmx.co.uk>
Link: https://lore.kernel.org/r/20200806185625.67344-1-alex.dewar@gmx.co.uk
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Eli Cohen <eli@mellanox.com>
4 years agovdpa_sim: init iommu lock
Michael S. Tsirkin [Mon, 10 Aug 2020 12:44:43 +0000 (08:44 -0400)]
vdpa_sim: init iommu lock

The patch adding the iommu lock did not initialize it.
The struct is zero-initialized so this is mostly a problem
when using lockdep.

Reported-by: kernel test robot <rong.a.chen@intel.com>
Cc: Max Gurtovoy <maxg@mellanox.com>
Fixes: 0ea9ee430e74 ("vdpasim: protect concurrent access to iommu iotlb")
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_config: fix up warnings on parisc
Michael S. Tsirkin [Wed, 5 Aug 2020 23:55:50 +0000 (19:55 -0400)]
virtio_config: fix up warnings on parisc

Apparently, on parisc le16_to_cpu returns an int. virtio_cread_le
is very strict about type sizes so it causes a warning.
Fix it up by casting to the correct type.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/20200805235550.1451637-1-mst@redhat.com
4 years agovdpa/mlx5: Add VDPA driver for supported mlx5 devices
Eli Cohen [Tue, 4 Aug 2020 16:20:48 +0000 (19:20 +0300)]
vdpa/mlx5: Add VDPA driver for supported mlx5 devices

Add a front end VDPA driver that registers in the VDPA bus and provides
networking to a guest. The VDPA driver creates the necessary resources
on the VF it is driving such that data path will be offloaded.

Notifications are being communicated through the driver.

Currently, only VFs are supported. In subsequent patches we will have
devlink support to control which VF is used for VDPA and which function
is used for regular networking.

Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Link: https://lore.kernel.org/r/20200804162048.22587-13-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
4 years agovdpa/mlx5: Add shared memory registration code
Eli Cohen [Tue, 4 Aug 2020 16:20:47 +0000 (19:20 +0300)]
vdpa/mlx5: Add shared memory registration code

Add code to support registering address space region for the device. The
virtio driver can run as either:
1. Guest virtio driver
2. Userspace virtio driver on the host
3. Kernel virtio driver on the host

In any case a memory key object is required to provide access to memory
for the device.

This code will be shared by network or block driver implementations.

Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Link: https://lore.kernel.org/r/20200804162048.22587-12-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovdpa/mlx5: Add support library for mlx5 VDPA implementation
Eli Cohen [Tue, 4 Aug 2020 16:20:46 +0000 (19:20 +0300)]
vdpa/mlx5: Add support library for mlx5 VDPA implementation

Following patches introduce VDPA network driver for Mellanox Connectx6
devices. This patch provides functionality that will be used by those
patches.

Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Link: https://lore.kernel.org/r/20200804162048.22587-11-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovdpa/mlx5: Add hardware descriptive header file
Eli Cohen [Tue, 4 Aug 2020 16:20:45 +0000 (19:20 +0300)]
vdpa/mlx5: Add hardware descriptive header file

Keep all vdpa related hardware definitions in this file.

Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Link: https://lore.kernel.org/r/20200804162048.22587-10-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovdpa: Modify get_vq_state() to return error code
Eli Cohen [Tue, 4 Aug 2020 16:20:44 +0000 (19:20 +0300)]
vdpa: Modify get_vq_state() to return error code

Modify get_vq_state() so it returns an error code. In case of hardware
acceleration, the available index may be retrieved from the device, an
operation that can possibly fail.

Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Link: https://lore.kernel.org/r/20200804162048.22587-9-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
4 years agonet/vdpa: Use struct for set/get vq state
Eli Cohen [Tue, 4 Aug 2020 16:20:43 +0000 (19:20 +0300)]
net/vdpa: Use struct for set/get vq state

For now VQ state involves 16 bit available index value encoded in u64
variable. In the future it will be extended to contain more fields. Use
struct to contain the state, now containing only a single u16 for the
available index. In the future we can add fields to this struct.

Reviewed-by: Parav Pandit <parav@mellanox.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Link: https://lore.kernel.org/r/20200804162048.22587-8-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovdpa: remove hard coded virtq num
Max Gurtovoy [Tue, 4 Aug 2020 16:20:42 +0000 (19:20 +0300)]
vdpa: remove hard coded virtq num

This will enable vdpa providers to add support for multi queue feature
and publish it to upper layers (vhost and virtio).

Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200804162048.22587-7-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovdpasim: support batch updating
Jason Wang [Tue, 4 Aug 2020 16:20:41 +0000 (19:20 +0300)]
vdpasim: support batch updating

The vDPA simulator support both set_map() and dma_map()/dma_unmap()
operations. But vhost-vdpa can only use one of them. So this patch
introduce a module parameter (batch_mapping) that let vpda_sim to
support only one of those dma operations. The batched mapping via
set_map() is enabled by default.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200804162048.22587-6-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovhost-vdpa: support IOTLB batching hints
Jason Wang [Tue, 4 Aug 2020 16:20:40 +0000 (19:20 +0300)]
vhost-vdpa: support IOTLB batching hints

This patches extend the vhost IOTLB API to accept batch updating hints
form userspace. When userspace wants update the device IOTLB in a
batch, it may do:

1) Write vhost_iotlb_msg with VHOST_IOTLB_BATCH_BEGIN flag
2) Perform a batch of IOTLB updating via VHOST_IOTLB_UPDATE/INVALIDATE
3) Write vhost_iotlb_msg with VHOST_IOTLB_BATCH_END flag

Vhost-vdpa may decide to batch the IOMMU/IOTLB updating in step 3 when
vDPA device support set_map() ops. This is useful for the vDPA device
that want to know all the mappings to tweak their own DMA translation
logic.

For vDPA device that doesn't require set_map(), no behavior changes.

This capability is advertised via VHOST_BACKEND_F_IOTLB_BATCH capability.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200804162048.22587-5-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovhost-vdpa: support get/set backend features
Jason Wang [Tue, 4 Aug 2020 16:20:39 +0000 (19:20 +0300)]
vhost-vdpa: support get/set backend features

This patch makes userspace can get and set backend features to
vhost-vdpa.

Signed-off-by: Cindy Lu <lulu@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200804162048.22587-4-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovhost: generialize backend features setting/getting
Jason Wang [Tue, 4 Aug 2020 16:20:38 +0000 (19:20 +0300)]
vhost: generialize backend features setting/getting

Move the backend features setting/getting from net.c to vhost.c to be
reused by vhost-vdpa.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200804162048.22587-3-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovhost-vdpa: refine ioctl pre-processing
Jason Wang [Tue, 4 Aug 2020 16:20:37 +0000 (19:20 +0300)]
vhost-vdpa: refine ioctl pre-processing

Switch to use 'switch' to make the codes more easier to be extended.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200804162048.22587-2-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agoMerge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox...
Michael S. Tsirkin [Wed, 5 Aug 2020 22:32:05 +0000 (18:32 -0400)]
Merge branch 'mlx5-next' of git://git./linux/kernel/git/mellanox/linux into HEAD

Merge shared code that's necessary for mlx5 vdpa bits to build.

The branch itself includes a small number of patches and is also
independently merged by a couple of other trees.
That shouldn't cause any conflicts by itself.

Saeed Mahameed <saeedm@mellanox.com> says:

---

mlx5-next is a very small branch based on a very early rc that includes
mlx5 shared stuff between rdma and net-next, and now virtio as well.

---

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovDPA: dont change vq irq after DRIVER_OK
Zhu Lingshan [Tue, 4 Aug 2020 10:21:23 +0000 (18:21 +0800)]
vDPA: dont change vq irq after DRIVER_OK

IRQ of a vq is not expected to be changed in a DRIVER_OK ~ !DRIVER_OK
period for irq offloading purposes. Place this comment at the side of
bus ops get_vq_irq than in set_status in vhost_vdpa.

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Link: https://lore.kernel.org/r/20200804102123.69978-1-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_pci_modern: Fix the comment of virtio_pci_find_capability()
Liao Pingfang [Mon, 3 Aug 2020 11:52:24 +0000 (19:52 +0800)]
virtio_pci_modern: Fix the comment of virtio_pci_find_capability()

Fix the comment of virtio_pci_find_capability() by adding missing comment
for the last parameter: bars.

Fixes: 59a5b0f7bf74 ("virtio-pci: alloc only resources actually used.")
Signed-off-by: Liao Pingfang <liao.pingfang@zte.com.cn>
Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Link: https://lore.kernel.org/r/1596455545-43556-1-git-send-email-wang.yi59@zte.com.cn
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
4 years agoirqbypass: do not start cons/prod when failed connect
Zhu Lingshan [Fri, 31 Jul 2020 06:55:33 +0000 (14:55 +0800)]
irqbypass: do not start cons/prod when failed connect

If failed to connect, there is no need to start consumer nor
producer.

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Suggested-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200731065533.4144-7-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agoifcvf: implement vdpa_config_ops.get_vq_irq()
Zhu Lingshan [Fri, 31 Jul 2020 06:55:32 +0000 (14:55 +0800)]
ifcvf: implement vdpa_config_ops.get_vq_irq()

This commit implemented vdpa_config_ops.get_vq_irq() in ifcvf,
and initialized vq irq to -EINVAL. So that ifcvf can report
irq number of a vq, or -EINVAL if the vq is not assigned an
irq number.

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Suggested-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200731065533.4144-6-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovhost_vdpa: implement IRQ offloading in vhost_vdpa
Zhu Lingshan [Fri, 31 Jul 2020 06:55:31 +0000 (14:55 +0800)]
vhost_vdpa: implement IRQ offloading in vhost_vdpa

This patch introduce a set of functions for setup/unsetup
and update irq offloading respectively by register/unregister
and re-register the irq_bypass_producer.

With these functions, this commit can setup/unsetup
irq offloading through setting DRIVER_OK/!DRIVER_OK, and
update irq offloading through SET_VRING_CALL.

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Suggested-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200731065533.4144-5-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovDPA: add get_vq_irq() in vdpa_config_ops
Zhu Lingshan [Fri, 31 Jul 2020 06:55:30 +0000 (14:55 +0800)]
vDPA: add get_vq_irq() in vdpa_config_ops

This commit adds a new function get_vq_irq() in struct
vdpa_config_ops, which will return the irq number of a
virtqueue.

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Suggested-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200731065533.4144-4-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agokvm: detect assigned device via irqbypass manager
Zhu Lingshan [Fri, 31 Jul 2020 06:55:29 +0000 (14:55 +0800)]
kvm: detect assigned device via irqbypass manager

vDPA devices has dedicated backed hardware like
passthrough-ed devices. Then it is possible to setup irq
offloading to vCPU for vDPA devices. Thus this patch tries to
manipulated assigned device counters by
kvm_arch_start/end_assignment() in irqbypass manager, so that
assigned devices could be detected in update_pi_irte()

We will increase/decrease the assigned device counter in kvm/x86.
Both vDPA and VFIO would go through this code path.

Only X86 uses these counters and kvm_arch_start/end_assignment(),
so this code path only affect x86 for now.

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Suggested-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200731065533.4144-3-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovhost: introduce vhost_vring_call
Zhu Lingshan [Fri, 31 Jul 2020 06:55:28 +0000 (14:55 +0800)]
vhost: introduce vhost_vring_call

This commit introduces struct vhost_vring_call which replaced
raw struct eventfd_ctx *call_ctx in struct vhost_virtqueue.
Besides eventfd_ctx, it contains a spin lock and an
irq_bypass_producer in its structure.

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Suggested-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200731065533.4144-2-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovhost: Use flex_array_size() helper in copy_from_user()
Gustavo A. R. Silva [Fri, 31 Jul 2020 13:09:56 +0000 (08:09 -0500)]
vhost: Use flex_array_size() helper in copy_from_user()

Make use of the flex_array_size() helper to calculate the size of a
flexible array member within an enclosing structure.

This helper offers defense-in-depth against potential integer
overflows, while at the same time makes it explicitly clear that
we are dealing with a flexible array member.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20200731130956.GA30525@embeddedor
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovdpasim: protect concurrent access to iommu iotlb
Max Gurtovoy [Fri, 31 Jul 2020 07:38:22 +0000 (15:38 +0800)]
vdpasim: protect concurrent access to iommu iotlb

Iommu iotlb can be accessed by different cores for performing IO using
multiple virt queues. Add a spinlock to synchronize iotlb accesses.

This could be easily reproduced when using more than 1 pktgen threads
to inject traffic to vdpa simulator.

Fixes: 2c53d0f64c06f("vdpasim: vDPA device simulator")
Cc: stable@vger.kernel.org
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200731073822.13326-1-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovhost: vdpa: remove per device feature whitelist
Jason Wang [Mon, 20 Jul 2020 08:50:43 +0000 (16:50 +0800)]
vhost: vdpa: remove per device feature whitelist

We used to have a per device feature whitelist to filter out the
unsupported virtio features. But this seems unnecessary since:

- the main idea behind feature whitelist is to block control vq
  feature until we finalize the control virtqueue API. But the current
  vhost-vDPA uAPI is sufficient to support control virtqueue. For
  device that has hardware control virtqueue, the vDPA device driver
  can just setup the hardware virtqueue and let userspace to use
  hardware virtqueue directly. For device that doesn't have a control
  virtqueue, the vDPA device driver need to use e.g vringh to emulate
  a software control virtqueue.
- we don't do it in virtio-vDPA driver

So remove this limitation.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200720085043.16485-1-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_ring: Avoid loop when vq is broken in virtqueue_poll
Mao Wenan [Sun, 2 Aug 2020 07:44:09 +0000 (15:44 +0800)]
virtio_ring: Avoid loop when vq is broken in virtqueue_poll

The loop may exist if vq->broken is true,
virtqueue_get_buf_ctx_packed or virtqueue_get_buf_ctx_split
will return NULL, so virtnet_poll will reschedule napi to
receive packet, it will lead cpu usage(si) to 100%.

call trace as below:
virtnet_poll
virtnet_receive
virtqueue_get_buf_ctx
virtqueue_get_buf_ctx_packed
virtqueue_get_buf_ctx_split
virtqueue_napi_complete
virtqueue_poll           //return true
virtqueue_napi_schedule //it will reschedule napi

to fix this, return false if vq is broken in virtqueue_poll.

Signed-off-by: Mao Wenan <wenan.mao@linux.alibaba.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/1596354249-96204-1-git-send-email-wenan.mao@linux.alibaba.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
4 years agovirtio_net: use LE accessors for speed/duplex
Michael S. Tsirkin [Wed, 5 Aug 2020 09:39:36 +0000 (05:39 -0400)]
virtio_net: use LE accessors for speed/duplex

Speed and duplex config fields depend on VIRTIO_NET_F_SPEED_DUPLEX
which being 63>31 depends on VIRTIO_F_VERSION_1.

Accordingly, use LE accessors for these fields.

Reported-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_config: drop LE option from config space
Michael S. Tsirkin [Wed, 5 Aug 2020 11:29:12 +0000 (07:29 -0400)]
virtio_config: drop LE option from config space

All drivers now use virtio_cread/write_le for LE config
space fields. Drop LE option from virtio_cread/write, only leaving
the option to access transitional fields.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio-iommu: convert to LE accessors
Michael S. Tsirkin [Wed, 5 Aug 2020 09:39:36 +0000 (05:39 -0400)]
virtio-iommu: convert to LE accessors

Virtio iommu is modern-only. Use LE accessors for config space.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_mem: convert to LE accessors
Michael S. Tsirkin [Wed, 5 Aug 2020 09:39:36 +0000 (05:39 -0400)]
virtio_mem: convert to LE accessors

Virtio mem is modern-only. Use LE accessors for config space.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agodrm/virtio: convert to LE accessors
Michael S. Tsirkin [Wed, 5 Aug 2020 09:39:36 +0000 (05:39 -0400)]
drm/virtio: convert to LE accessors

Virtgpu is modern-only. Use LE accessors for config space.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_pmem: convert to LE accessors
Michael S. Tsirkin [Wed, 5 Aug 2020 09:39:36 +0000 (05:39 -0400)]
virtio_pmem: convert to LE accessors

Virtio pmem is modern-only. Use LE accessors for config space.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_crypto: convert to LE accessors
Michael S. Tsirkin [Wed, 5 Aug 2020 09:39:36 +0000 (05:39 -0400)]
virtio_crypto: convert to LE accessors

Virtio crypto is modern-only. Use LE accessors for config space.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_fs: convert to LE accessors
Michael S. Tsirkin [Wed, 5 Aug 2020 09:39:36 +0000 (05:39 -0400)]
virtio_fs: convert to LE accessors

Virtio fs is modern-only. Use LE accessors for config space.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_input: convert to LE accessors
Michael S. Tsirkin [Wed, 5 Aug 2020 09:39:36 +0000 (05:39 -0400)]
virtio_input: convert to LE accessors

Virtio input is modern-only. Use LE accessors for config space.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_balloon: use LE config space accesses
Michael S. Tsirkin [Tue, 4 Aug 2020 21:51:35 +0000 (17:51 -0400)]
virtio_balloon: use LE config space accesses

Balloon is LE, it's cleaner to access it as such directly.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_config: add virtio_cread_le_feature
Michael S. Tsirkin [Wed, 5 Aug 2020 13:17:38 +0000 (09:17 -0400)]
virtio_config: add virtio_cread_le_feature

Mirrors virtio_cread_feature but for LE fields.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_caif: correct tags for config space fields
Michael S. Tsirkin [Tue, 4 Aug 2020 22:02:39 +0000 (18:02 -0400)]
virtio_caif: correct tags for config space fields

Tag config space fields as having virtio endian-ness.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_config: LE config space accessors
Michael S. Tsirkin [Tue, 4 Aug 2020 21:33:08 +0000 (17:33 -0400)]
virtio_config: LE config space accessors

To be used by modern code, as well as to handle LE only fields such as
balloon.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_config: disallow native type fields (again)
Michael S. Tsirkin [Fri, 10 Jul 2020 11:55:52 +0000 (07:55 -0400)]
virtio_config: disallow native type fields (again)

_Generic version allowed __uXX types but that is no longer necessary:

Transitional devices should all use __virtioXX types (and __leXX for
fields not present in the legacy devices).
Modern ones should use __leXX.
_uXX type would be a bug.
Let's prevent that.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_config: rewrite using _Generic
Michael S. Tsirkin [Mon, 3 Aug 2020 20:08:11 +0000 (16:08 -0400)]
virtio_config: rewrite using _Generic

Min compiler version has been raised, so that's ok now.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_config: cread/write cleanup
Michael S. Tsirkin [Thu, 30 Jul 2020 20:12:40 +0000 (16:12 -0400)]
virtio_config: cread/write cleanup

Use vars of the correct type instead of casting.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovdpa_sim: fix endian-ness of config space
Michael S. Tsirkin [Sun, 12 Jul 2020 14:57:02 +0000 (10:57 -0400)]
vdpa_sim: fix endian-ness of config space

VDPA sim accesses config space as native endian - this is
wrong since it's a modern device and actually uses LE.

It only supports modern guests so we could punt and
just force LE, but let's use the full virtio APIs since people
tend to copy/paste code, and this is not data path anyway.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_vdpa: legacy features handling
Michael S. Tsirkin [Mon, 27 Jul 2020 14:59:02 +0000 (10:59 -0400)]
virtio_vdpa: legacy features handling

We normally expect vdpa to use the modern interface.
However for consistency, let's use same APIs as vhost
for legacy guests.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovhost/vdpa: switch to new helpers
Michael S. Tsirkin [Mon, 27 Jul 2020 14:58:18 +0000 (10:58 -0400)]
vhost/vdpa: switch to new helpers

For new helpers handling legacy features to be effective,
vhost needs to invoke them. Tie them in.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovdpa: make sure set_features is invoked for legacy
Michael S. Tsirkin [Mon, 27 Jul 2020 14:51:55 +0000 (10:51 -0400)]
vdpa: make sure set_features is invoked for legacy

Some legacy guests just assume features are 0 after reset.
We detect that config space is accessed before features are
set and set features to 0 automatically.
Note: some legacy guests might not even access config space, if this is
reported in the field we might need to catch a kick to handle these.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agomlxbf-tmfifo: sparse tags for config access
Michael S. Tsirkin [Sun, 12 Jul 2020 14:56:34 +0000 (10:56 -0400)]
mlxbf-tmfifo: sparse tags for config access

mlxbf-tmfifo accesses config space using native types -
which works for it since the legacy virtio native types.

This will break if it ever needs to support modern virtio,
so with new tags previously introduced for virtio net config,
sparse now warns for this in drivers.

Since this is a legacy only device, fix it up using
virtio_legacy_is_little_endian for now.

No functional changes.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
4 years agovirtio_config: disallow native type fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:55:52 +0000 (07:55 -0400)]
virtio_config: disallow native type fields

Transitional devices should all use __virtioXX types (and __leXX for
fields not present in legacy devices).
Modern ones should use __leXX.
_uXX type would be a bug.
Let's prevent that.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_scsi: correct tags for config space fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:17:13 +0000 (07:17 -0400)]
virtio_scsi: correct tags for config space fields

Tag config space fields as having virtio endian-ness.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio_pmem: correct tags for config space fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:17:13 +0000 (07:17 -0400)]
virtio_pmem: correct tags for config space fields

Since this is a modern-only device,
tag config space fields as having little endian-ness.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio_net: correct tags for config space fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:17:13 +0000 (07:17 -0400)]
virtio_net: correct tags for config space fields

Tag config space fields as having virtio endian-ness.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio_mem: correct tags for config space fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:17:13 +0000 (07:17 -0400)]
virtio_mem: correct tags for config space fields

Since this is a modern-only device,
tag config space fields as having little endian-ness.

TODO: check other uses of __virtioXX types in this header,
should probably be __leXX.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio_iommu: correct tags for config space fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:17:13 +0000 (07:17 -0400)]
virtio_iommu: correct tags for config space fields

Since this is a modern-only device,
tag config space fields as having little endian-ness.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio_input: correct tags for config space fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:17:13 +0000 (07:17 -0400)]
virtio_input: correct tags for config space fields

Since this is a modern-only device,
tag config space fields as having little endian-ness.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio_gpu: correct tags for config space fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:17:13 +0000 (07:17 -0400)]
virtio_gpu: correct tags for config space fields

Since gpu is a modern-only device,
tag config space fields as having little endian-ness.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio_fs: correct tags for config space fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:17:13 +0000 (07:17 -0400)]
virtio_fs: correct tags for config space fields

Since fs is a modern-only device,
tag config space fields as having little endian-ness.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio_crypto: correct tags for config space fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:17:13 +0000 (07:17 -0400)]
virtio_crypto: correct tags for config space fields

Since crypto is a modern-only device,
tag config space fields as having little endian-ness.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio_console: correct tags for config space fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:17:13 +0000 (07:17 -0400)]
virtio_console: correct tags for config space fields

Tag config space fields as having virtio endian-ness.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio_blk: correct tags for config space fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:17:13 +0000 (07:17 -0400)]
virtio_blk: correct tags for config space fields

Tag config space fields as having virtio endian-ness.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
4 years agovirtio_balloon: correct tags for config space fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:17:13 +0000 (07:17 -0400)]
virtio_balloon: correct tags for config space fields

Tag config space fields as having little endian-ness.
Note that balloon is special: LE even when using
the legacy interface.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio_9p: correct tags for config space fields
Michael S. Tsirkin [Fri, 10 Jul 2020 11:17:13 +0000 (07:17 -0400)]
virtio_9p: correct tags for config space fields

Tag config space fields as having virtio endian-ness.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio: allow __virtioXX, __leXX in config space
Michael S. Tsirkin [Fri, 10 Jul 2020 07:20:21 +0000 (03:20 -0400)]
virtio: allow __virtioXX, __leXX in config space

Currently all config space fields are of the type __uXX.
This confuses people and some drivers (notably vdpa)
access them using CPU endian-ness - which only
works well for legacy or LE platforms.

Update virtio_cread/virtio_cwrite macros to allow __virtioXX
and __leXX field types. Follow-up patches will convert
config space to use these types.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio_ring: sparse warning fixup
Michael S. Tsirkin [Fri, 10 Jul 2020 10:46:04 +0000 (06:46 -0400)]
virtio_ring: sparse warning fixup

virtio_store_mb was built with split ring in mind so it accepts
__virtio16 arguments. Packed ring uses __le16 values, so sparse
complains.  It's just a store with some barriers so let's convert it to
a macro, we don't loose too much type safety by doing that.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio_balloon: fix sparse warning
Michael S. Tsirkin [Fri, 10 Jul 2020 10:34:49 +0000 (06:34 -0400)]
virtio_balloon: fix sparse warning

balloon uses virtio32_to_cpu instead of cpu_to_virtio32
to convert a native endian number to virtio.
No practical difference but makes sparse warn.
Fix it up.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
4 years agovirtio: virtio_has_iommu_quirk -> virtio_has_dma_quirk
Michael S. Tsirkin [Wed, 24 Jun 2020 23:17:04 +0000 (19:17 -0400)]
virtio: virtio_has_iommu_quirk -> virtio_has_dma_quirk

Now that the corresponding feature bit has been renamed,
rename the quirk too - it's about special ways to
do DMA, not necessarily about the IOMMU.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
4 years agovirtio: VIRTIO_F_IOMMU_PLATFORM -> VIRTIO_F_ACCESS_PLATFORM
Michael S. Tsirkin [Wed, 24 Jun 2020 22:24:33 +0000 (18:24 -0400)]
virtio: VIRTIO_F_IOMMU_PLATFORM -> VIRTIO_F_ACCESS_PLATFORM

Rename the bit to match latest virtio spec.
Add a compat macro to avoid breaking existing userspace.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
4 years agoLinux 5.8
Linus Torvalds [Sun, 2 Aug 2020 21:21:45 +0000 (14:21 -0700)]
Linux 5.8

4 years agoMerge tag 'x86-urgent-2020-08-02' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 2 Aug 2020 20:10:42 +0000 (13:10 -0700)]
Merge tag 'x86-urgent-2020-08-02' of git://git./linux/kernel/git/tip/tip

Pull x86 fix from Ingo Molnar:
 "A single fix for a potential deadlock when printing a message about
  spurious interrupts"

* tag 'x86-urgent-2020-08-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/i8259: Use printk_deferred() to prevent deadlock

4 years agoMerge tag 'kbuild-fixes-v5.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 2 Aug 2020 18:23:51 +0000 (11:23 -0700)]
Merge tag 'kbuild-fixes-v5.8-4' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - clean the generated moc file for xconfig

 - fix xconfig bugs, and revert some bad commits

* tag 'kbuild-fixes-v5.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: remove redundant FORCE definition in scripts/Makefile.modpost
  kconfig: qconf: remove wrong ConfigList::firstChild()
  Revert "kconfig: qconf: don't show goback button on splitMode"
  Revert "kconfig: qconf: Change title for the item window"
  kconfig: qconf: remove "goBack" debug message
  kconfig: qconf: use delete[] instead of delete to free array
  kconfig: qconf: compile moc object separately
  kconfig: qconf: use if_changed for qconf.moc rule
  modpost: explain why we can't use strsep

4 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sun, 2 Aug 2020 17:41:00 +0000 (10:41 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "Bugfixes and strengthening the validity checks on inputs from new
  userspace APIs.

  Now I know why I shouldn't prepare pull requests on the weekend, it's
  hard to concentrate if your son is shouting about his latest Minecraft
  builds in your ear. Fortunately all the patches were ready and I just
  had to check the test results..."

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: SVM: Fix disable pause loop exit/pause filtering capability on SVM
  KVM: LAPIC: Prevent setting the tscdeadline timer if the lapic is hw disabled
  KVM: arm64: Don't inherit exec permission across page-table levels
  KVM: arm64: Prevent vcpu_has_ptrauth from generating OOL functions
  KVM: nVMX: check for invalid hdr.vmx.flags
  KVM: nVMX: check for required but missing VMCS12 in KVM_SET_NESTED_STATE
  selftests: kvm: do not set guest mode flag

4 years agokbuild: remove redundant FORCE definition in scripts/Makefile.modpost
Masahiro Yamada [Sun, 2 Aug 2020 13:54:40 +0000 (22:54 +0900)]
kbuild: remove redundant FORCE definition in scripts/Makefile.modpost

The same code exists a few lines above.

Fixes: 436b2ac603d5 ("modpost: invoke modpost only when input files are updated")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
4 years agokconfig: qconf: remove wrong ConfigList::firstChild()
Masahiro Yamada [Sat, 1 Aug 2020 07:08:50 +0000 (16:08 +0900)]
kconfig: qconf: remove wrong ConfigList::firstChild()

This function returns the first child object, but the returned pointer
is not compatible with (ConfigItem *).

Commit cc1c08edccaf ("kconfig: qconf: don't show goback button on
splitMode") uncovered this issue because using the pointer from this
function would make qconf crash. (https://lkml.org/lkml/2020/7/18/411)

This function does not work. Remove.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
4 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Sat, 1 Aug 2020 23:47:24 +0000 (16:47 -0700)]
Merge git://git./linux/kernel/git/netdev/net

Pull networking fixes from David Miller:

 1) Encap offset calculation is incorrect in esp6, from Sabrina Dubroca.

 2) Better parameter validation in pfkey_dump(), from Mark Salyzyn.

 3) Fix several clang issues on powerpc in selftests, from Tanner Love.

 4) cmsghdr_from_user_compat_to_kern() uses the wrong length, from Al
    Viro.

 5) Out of bounds access in mlx5e driver, from Raed Salem.

 6) Fix transfer buffer memleak in lan78xx, from Johan Havold.

 7) RCU fixups in rhashtable, from Herbert Xu.

 8) Fix ipv6 nexthop refcnt leak, from Xiyu Yang.

 9) vxlan FDB dump must be done under RCU, from Ido Schimmel.

10) Fix use after free in mlxsw, from Ido Schimmel.

11) Fix map leak in HASH_OF_MAPS bpf code, from Andrii Nakryiko.

12) Fix bug in mac80211 Tx ack status reporting, from Vasanthakumar
    Thiagarajan.

13) Fix memory leaks in IPV6_ADDRFORM code, from Cong Wang.

14) Fix bpf program reference count leaks in mlx5 during
    mlx5e_alloc_rq(), from Xin Xiong.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (86 commits)
  vxlan: fix memleak of fdb
  rds: Prevent kernel-infoleak in rds_notify_queue_get()
  net/sched: The error lable position is corrected in ct_init_module
  net/mlx5e: fix bpf_prog reference count leaks in mlx5e_alloc_rq
  net/mlx5e: E-Switch, Specify flow_source for rule with no in_port
  net/mlx5e: E-Switch, Add misc bit when misc fields changed for mirroring
  net/mlx5e: CT: Support restore ipv6 tunnel
  net: gemini: Fix missing clk_disable_unprepare() in error path of gemini_ethernet_port_probe()
  ionic: unlock queue mutex in error path
  atm: fix atm_dev refcnt leaks in atmtcp_remove_persistent
  net: ethernet: mtk_eth_soc: fix MTU warnings
  net: nixge: fix potential memory leak in nixge_probe()
  devlink: ignore -EOPNOTSUPP errors on dumpit
  rxrpc: Fix race between recvmsg and sendmsg on immediate call failure
  MAINTAINERS: Replace Thor Thayer as Altera Triple Speed Ethernet maintainer
  selftests/bpf: fix netdevsim trap_flow_action_cookie read
  ipv6: fix memory leaks on IPV6_ADDRFORM path
  net/bpfilter: Initialize pos in __bpfilter_process_sockopt
  igb: reinit_locked() should be called with rtnl_lock
  e1000e: continue to init PHY even when failed to disable ULP
  ...

4 years agoMerge tag 'for-linus-2020-08-01' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 1 Aug 2020 23:40:59 +0000 (16:40 -0700)]
Merge tag 'for-linus-2020-08-01' of git://git./linux/kernel/git/brauner/linux

Pull thread fix from Christian Brauner:
 "A simple spelling fix for dequeue_synchronous_signal()"

* tag 'for-linus-2020-08-01' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
  signal: fix typo in dequeue_synchronous_signal()

4 years agoMerge tag 'perf-tools-fixes-2020-08-01' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 1 Aug 2020 20:08:50 +0000 (13:08 -0700)]
Merge tag 'perf-tools-fixes-2020-08-01' of git://git./linux/kernel/git/acme/linux

Pull perf tooling fixes from Arnaldo Carvalho de Melo:

 - Fix libtraceevent build with binutils 2.35

 - Fix memory leak in process_dynamic_array_len in libtraceevent

 - Fix 'perf test 68' zstd compression for s390

 - Fix record failure when mixed with ARM SPE event

* tag 'perf-tools-fixes-2020-08-01' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  libtraceevent: Fix build with binutils 2.35
  perf tools: Fix record failure when mixed with ARM SPE event
  perf tests: Fix test 68 zstd compression for s390
  tools lib traceevent: Fix memory leak in process_dynamic_array_len

4 years agovxlan: fix memleak of fdb
Taehee Yoo [Sat, 1 Aug 2020 07:07:50 +0000 (07:07 +0000)]
vxlan: fix memleak of fdb

When vxlan interface is deleted, all fdbs are deleted by vxlan_flush().
vxlan_flush() flushes fdbs but it doesn't delete fdb, which contains
all-zeros-mac because it is deleted by vxlan_uninit().
But vxlan_uninit() deletes only the fdb, which contains both all-zeros-mac
and default vni.
So, the fdb, which contains both all-zeros-mac and non-default vni
will not be deleted.

Test commands:
    ip link add vxlan0 type vxlan dstport 4789 external
    ip link set vxlan0 up
    bridge fdb add to 00:00:00:00:00:00 dst 172.0.0.1 dev vxlan0 via lo \
    src_vni 10000 self permanent
    ip link del vxlan0

kmemleak reports as follows:
unreferenced object 0xffff9486b25ced88 (size 96):
  comm "bridge", pid 2151, jiffies 4294701712 (age 35506.901s)
  hex dump (first 32 bytes):
    02 00 00 00 ac 00 00 01 40 00 09 b1 86 94 ff ff  ........@.......
    46 02 00 00 00 00 00 00 a7 03 00 00 12 b5 6a 6b  F.............jk
  backtrace:
    [<00000000c10cf651>] vxlan_fdb_append.part.51+0x3c/0xf0 [vxlan]
    [<000000006b31a8d9>] vxlan_fdb_create+0x184/0x1a0 [vxlan]
    [<0000000049399045>] vxlan_fdb_update+0x12f/0x220 [vxlan]
    [<0000000090b1ef00>] vxlan_fdb_add+0x12a/0x1b0 [vxlan]
    [<0000000056633c2c>] rtnl_fdb_add+0x187/0x270
    [<00000000dd5dfb6b>] rtnetlink_rcv_msg+0x264/0x490
    [<00000000fc44dd54>] netlink_rcv_skb+0x4a/0x110
    [<00000000dff433e7>] netlink_unicast+0x18e/0x250
    [<00000000b87fb421>] netlink_sendmsg+0x2e9/0x400
    [<000000002ed55153>] ____sys_sendmsg+0x237/0x260
    [<00000000faa51c66>] ___sys_sendmsg+0x88/0xd0
    [<000000006c3982f1>] __sys_sendmsg+0x4e/0x80
    [<00000000a8f875d2>] do_syscall_64+0x56/0xe0
    [<000000003610eefa>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
unreferenced object 0xffff9486b1c40080 (size 128):
  comm "bridge", pid 2157, jiffies 4294701754 (age 35506.866s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 f8 dc 42 b2 86 94 ff ff  ..........B.....
    6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
  backtrace:
    [<00000000a2981b60>] vxlan_fdb_create+0x67/0x1a0 [vxlan]
    [<0000000049399045>] vxlan_fdb_update+0x12f/0x220 [vxlan]
    [<0000000090b1ef00>] vxlan_fdb_add+0x12a/0x1b0 [vxlan]
    [<0000000056633c2c>] rtnl_fdb_add+0x187/0x270
    [<00000000dd5dfb6b>] rtnetlink_rcv_msg+0x264/0x490
    [<00000000fc44dd54>] netlink_rcv_skb+0x4a/0x110
    [<00000000dff433e7>] netlink_unicast+0x18e/0x250
    [<00000000b87fb421>] netlink_sendmsg+0x2e9/0x400
    [<000000002ed55153>] ____sys_sendmsg+0x237/0x260
    [<00000000faa51c66>] ___sys_sendmsg+0x88/0xd0
    [<000000006c3982f1>] __sys_sendmsg+0x4e/0x80
    [<00000000a8f875d2>] do_syscall_64+0x56/0xe0
    [<000000003610eefa>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 3ad7a4b141eb ("vxlan: support fdb and learning in COLLECT_METADATA mode")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge tag 'pinctrl-v5.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
Linus Torvalds [Sat, 1 Aug 2020 17:11:42 +0000 (10:11 -0700)]
Merge tag 'pinctrl-v5.8-4' of git://git./linux/kernel/git/linusw/linux-pinctrl

Pull pin control fix from Linus Walleij:
 "A single last minute pin control fix to the Qualcomm driver fixing
  missing dual edge PCH interrupts"

* tag 'pinctrl-v5.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: qcom: Handle broken/missing PDC dual edge IRQs on sc7180

4 years agoRevert "kconfig: qconf: don't show goback button on splitMode"
Masahiro Yamada [Sat, 1 Aug 2020 07:08:49 +0000 (16:08 +0900)]
Revert "kconfig: qconf: don't show goback button on splitMode"

This reverts commit cc1c08edccaf5317d99a17a3231fe06381044e83.

Maxim Levitsky reports 'make xconfig' crashes since that commit
(https://lkml.org/lkml/2020/7/18/411)

Or, the following is simple test code that makes it crash:

    menu "Menu"

    config FOO
            bool "foo"
            default y

    menuconfig BAR
            bool "bar"
            depends on FOO

    endmenu

Select the Split View mode, and double-click "bar" in the right
window, then you will see Segmentation fault.

When 'last' is not set for symbolMode, the following code in
ConfigList::updateList() calls firstChild().

  item = last ? last->nextSibling() : firstChild();

However, the pointer returned by ConfigList::firstChild() does not
seem to be compatible with (ConfigItem *), which seems another bug.

I'd rather want to reconsider whether hiding the goback icon is the
right thing to do.

In the following test code, the Split View shows "Menu2" and "Menu3"
in the right window. You can descend into "Menu3", but there is no way
to ascend back to "Menu2" from "Menu3".

    menu "Menu1"

    config FOO
            bool "foo"
            default y

    menu "Menu2"
            depends on FOO

    menu "Menu3"

    config BAZ
            bool "baz"

    endmenu

    endmenu

    endmenu

It is true that the goback button is currently not functional due to
yet another bug, but hiding the problem is not the right way to go.

Anyway, Segmentation fault is fatal. Revert the offending commit for
now, and we should find the right solution.

Reported-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
4 years agoRevert "kconfig: qconf: Change title for the item window"
Masahiro Yamada [Wed, 29 Jul 2020 17:46:17 +0000 (02:46 +0900)]
Revert "kconfig: qconf: Change title for the item window"

This reverts commit 5752ff07fd90d764d96e3c586cc95c09598abfdd.

It added dead code to ConfigList:ConfigList().

The constructor of ConfigList has the initializer, mode(singleMode).

    if (mode == symbolMode)
           setHeaderLabels(QStringList() << "Item" << "Name" << "N" << "M" << "Y" << "Value");
    else
           setHeaderLabels(QStringList() << "Option" << "Name" << "N" << "M" << "Y" << "Value");

... always takes the else part.

The change to ConfigList::updateSelection() is strange too.
When you click the split view icon for the first time, the titles in
both windows show "Option". After you click something in the right
window, the title suddenly changes to "Item".

ConfigList::updateSelection() is not the right place to do this,
at least. It was not a good idea, I think.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
4 years agokconfig: qconf: remove "goBack" debug message
Masahiro Yamada [Wed, 29 Jul 2020 17:12:40 +0000 (02:12 +0900)]
kconfig: qconf: remove "goBack" debug message

Every time the goback icon is clicked, the annoying message "goBack"
is displayed on the console.

I guess this line is the left-over debug code of commit af737b4defe1
("kconfig: qconf: simplify the goBack() logic").

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
4 years agokconfig: qconf: use delete[] instead of delete to free array
Masahiro Yamada [Wed, 29 Jul 2020 17:02:39 +0000 (02:02 +0900)]
kconfig: qconf: use delete[] instead of delete to free array

cppcheck reports "Mismatching allocation and deallocation".

$ cppcheck scripts/kconfig/qconf.cc
Checking scripts/kconfig/qconf.cc ...
scripts/kconfig/qconf.cc:1242:10: error: Mismatching allocation and deallocation: data [mismatchAllocDealloc]
  delete data;
         ^
scripts/kconfig/qconf.cc:1236:15: note: Mismatching allocation and deallocation: data
 char *data = new char[count + 1];
              ^
scripts/kconfig/qconf.cc:1242:10: note: Mismatching allocation and deallocation: data
  delete data;
         ^
scripts/kconfig/qconf.cc:1255:10: error: Mismatching allocation and deallocation: data [mismatchAllocDealloc]
  delete data;
         ^
scripts/kconfig/qconf.cc:1236:15: note: Mismatching allocation and deallocation: data
 char *data = new char[count + 1];
              ^
scripts/kconfig/qconf.cc:1255:10: note: Mismatching allocation and deallocation: data
  delete data;
         ^

Fixes: c4f7398bee9c ("kconfig: qconf: make debug links work again")
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
4 years agokconfig: qconf: compile moc object separately
Masahiro Yamada [Wed, 29 Jul 2020 17:02:38 +0000 (02:02 +0900)]
kconfig: qconf: compile moc object separately

Currently, qconf.moc is included from qconf.cc but they can be compiled
independently.

When you modify qconf.cc, qconf.moc does not need recompiling.

Rename qconf.moc to qconf-moc.cc, and split it out as an independent
compilation unit.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
4 years agokconfig: qconf: use if_changed for qconf.moc rule
Masahiro Yamada [Wed, 29 Jul 2020 17:02:37 +0000 (02:02 +0900)]
kconfig: qconf: use if_changed for qconf.moc rule

Regenerate qconf.moc when the moc command is changed.

This also allows 'make mrproper' to clean it up. Previously, it was
not cleaned up because 'clean-files += qconf.moc' was missing.
Now 'make mrproper' correctly cleans it up because files listed in
'targets' are cleaned.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
4 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
David S. Miller [Sat, 1 Aug 2020 00:19:47 +0000 (17:19 -0700)]
Merge git://git./pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2020-07-31

The following pull-request contains BPF updates for your *net* tree.

We've added 5 non-merge commits during the last 21 day(s) which contain
a total of 5 files changed, 126 insertions(+), 18 deletions(-).

The main changes are:

1) Fix a map element leak in HASH_OF_MAPS map type, from Andrii Nakryiko.

2) Fix a NULL pointer dereference in __btf_resolve_helper_id() when no
   btf_vmlinux is available, from Peilin Ye.

3) Init pos variable in __bpfilter_process_sockopt(), from Christoph Hellwig.

4) Fix a cgroup sockopt verifier test by specifying expected attach type,
   from Jean-Philippe Brucker.

Note that when net gets merged into net-next later on, there is a small
merge conflict in kernel/bpf/btf.c between commit 5b801dfb7feb ("bpf: Fix
NULL pointer dereference in __btf_resolve_helper_id()") from the bpf tree
and commit 138b9a0511c7 ("bpf: Remove btf_id helpers resolving") from the
net-next tree.

Resolve as follows: remove the old hunk with the __btf_resolve_helper_id()
function. Change the btf_resolve_helper_id() so it actually tests for a
NULL btf_vmlinux and bails out:

int btf_resolve_helper_id(struct bpf_verifier_log *log,
                          const struct bpf_func_proto *fn, int arg)
{
        int id;

        if (fn->arg_type[arg] != ARG_PTR_TO_BTF_ID || !btf_vmlinux)
                return -EINVAL;
        id = fn->btf_id[arg];
        if (!id || id > btf_vmlinux->nr_types)
                return -EINVAL;
        return id;
}

Let me know if you run into any others issues (CC'ing Jiri Olsa so he's in
the loop with regards to merge conflict resolution).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
David S. Miller [Sat, 1 Aug 2020 00:10:53 +0000 (17:10 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/klassert/ipsec

Steffen Klassert says:

====================
pull request (net): ipsec 2020-07-31

1) Fix policy matching with mark and mask on userspace interfaces.
   From Xin Long.

2) Several fixes for the new ESP in TCP encapsulation.
   From Sabrina Dubroca.

3) Fix crash when the hold queue is used. The assumption that
   xdst->path and dst->child are not a NULL pointer only if dst->xfrm
   is not a NULL pointer is true with the exception of using the
   hold queue. Fix this by checking for hold queue usage before
   dereferencing xdst->path or dst->child.

4) Validate pfkey_dump parameter before sending them.
   From Mark Salyzyn.

5) Fix the location of the transport header with ESP in UDPv6
   encapsulation. From Sabrina Dubroca.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge tag 'mlx5-fixes-2020-07-30' of git://git.kernel.org/pub/scm/linux/kernel/git...
David S. Miller [Sat, 1 Aug 2020 00:05:54 +0000 (17:05 -0700)]
Merge tag 'mlx5-fixes-2020-07-30' of git://git./linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
Mellanox, mlx5 fixes 2020-07-30

This small patchset introduces some fixes to mlx5 driver.

Please pull and let me know if there is any problem.

For -stable v4.18:
 ('net/mlx5e: fix bpf_prog reference count leaks in mlx5e_alloc_rq')

For -stable v5.7:
 ('net/mlx5e: E-Switch, Add misc bit when misc fields changed for mirroring')
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agords: Prevent kernel-infoleak in rds_notify_queue_get()
Peilin Ye [Thu, 30 Jul 2020 19:20:26 +0000 (15:20 -0400)]
rds: Prevent kernel-infoleak in rds_notify_queue_get()

rds_notify_queue_get() is potentially copying uninitialized kernel stack
memory to userspace since the compiler may leave a 4-byte hole at the end
of `cmsg`.

In 2016 we tried to fix this issue by doing `= { 0 };` on `cmsg`, which
unfortunately does not always initialize that 4-byte hole. Fix it by using
memset() instead.

Cc: stable@vger.kernel.org
Fixes: f037590fff30 ("rds: fix a leak of kernel memory")
Fixes: bdbe6fbc6a2f ("RDS: recv.c")
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net...
David S. Miller [Fri, 31 Jul 2020 23:51:58 +0000 (16:51 -0700)]
Merge branch '1GbE' of git://git./linux/kernel/git/jkirsher/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2020-07-30

This series contains updates to the e1000e and igb drivers.

Aaron Ma allows PHY initialization to continue if ULP disable failed for
e1000e.

Francesco Ruggeri fixes race conditions in igb reset that could cause panics.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/sched: The error lable position is corrected in ct_init_module
liujian [Thu, 30 Jul 2020 08:14:28 +0000 (16:14 +0800)]
net/sched: The error lable position is corrected in ct_init_module

Exchange the positions of the err_tbl_init and err_register labels in
ct_init_module function.

Fixes: c34b961a2492 ("net/sched: act_ct: Create nf flow table per zone")
Signed-off-by: liujian <liujian56@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Fri, 31 Jul 2020 19:50:54 +0000 (12:50 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Some I2C core improvements to prevent NULL pointer usage and a
  MAINTAINERS update"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: slave: add sanity check when unregistering
  i2c: slave: improve sanity check when registering
  MAINTAINERS: Update GENI I2C maintainers list
  i2c: also convert placeholder function to return errno

4 years agoMerge tag 'powerpc-5.8-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Fri, 31 Jul 2020 16:38:39 +0000 (09:38 -0700)]
Merge tag 'powerpc-5.8-8' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fix from Michael Ellerman:
 "Fix a bug introduced by the changes we made to lockless page table
  walking this cycle.

  When using the hash MMU, and perf with callchain recording, we can
  deadlock if the PMI interrupts a hash fault, and the callchain
  recording then takes a hash fault on the same page.

  Thanks to Nicholas Piggin, Aneesh Kumar K.V, Anton Blanchard, and
  Athira Rajeev"

* tag 'powerpc-5.8-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s/hash: Fix hash_preload running with interrupts enabled

4 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 31 Jul 2020 16:36:03 +0000 (09:36 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "The main one is to fix the build after Willy's per-cpu entropy changes
  this week. Although that was already resolved elsewhere, the arm64 fix
  here is useful cleanup anyway.

  Other than that, we've got a fix for building with Clang's integrated
  assembler and a fix to make our IPv4 checksumming robust against
  invalid header lengths (this only seems to be triggerable by injected
  errors).

   - Fix build breakage due to circular headers

   - Fix build regression when using Clang's integrated assembler

   - Fix IPv4 header checksum code to deal with invalid length field

   - Fix broken path for Arm PMU entry in MAINTAINERS"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  MAINTAINERS: Include drivers subdirs for ARM PMU PROFILING AND DEBUGGING entry
  arm64: csum: Fix handling of bad packets
  arm64: Drop unnecessary include from asm/smp.h
  arm64/alternatives: move length validation inside the subsection

4 years agoMerge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Linus Torvalds [Fri, 31 Jul 2020 16:33:45 +0000 (09:33 -0700)]
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:

 - avoid invoking overflow handler for uaccess watchpoints

 - fix incorrect clock_gettime64 availability

 - fix EFI crash in create_mapping_late()

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8988/1: mmu: fix crash in EFI calls due to p4d typo in create_mapping_late()
  ARM: 8987/1: VDSO: Fix incorrect clock_gettime64
  ARM: 8986/1: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints

4 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Linus Torvalds [Fri, 31 Jul 2020 16:22:10 +0000 (09:22 -0700)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "Two more merge window regressions, a corruption bug in hfi1 and a few
  other small fixes.

   - Missing user input validation regression in ucma

   - Disallowing a previously allowed user combination regression in
     mlx5

   - ODP prefetch memory leaking triggerable by userspace

   - Memory corruption in hf1 due to faulty ring buffer logic

   - Missed mutex initialization crash in mlx5

   - Two small defects with RDMA DIM"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/core: Free DIM memory in error unwind
  RDMA/core: Stop DIM before destroying CQ
  RDMA/mlx5: Initialize QP mutex for the debug kernels
  IB/rdmavt: Fix RQ counting issues causing use of an invalid RWQE
  RDMA/mlx5: Allow providing extra scatter CQE QP flag
  RDMA/mlx5: Fix prefetch memory leak if get_prefetchable_mr fails
  RDMA/cm: Add min length checks to user structure copies

4 years agoMerge tag 'sound-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Fri, 31 Jul 2020 16:17:24 +0000 (09:17 -0700)]
Merge tag 'sound-5.8' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A few wrap-up small fixes for the usual HD-audio and USB-audio stuff:

   - A regression fix for S3 suspend on old Intel platforms

   - A fix for possible Oops in ASoC HD-audio binding

   - Trivial quirks for various devices"

* tag 'sound-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/realtek - Fixed HP right speaker no sound
  ALSA: hda: fix NULL pointer dereference during suspend
  ALSA: hda/hdmi: Fix keep_power assignment for non-component devices
  ALSA: hda: Workaround for spurious wakeups on some Intel platforms
  ALSA: hda/realtek: Fix add a "ultra_low_power" function for intel reference board (alc256)
  ALSA: hda/realtek: typo_fix: enable headset mic of ASUS ROG Zephyrus G14(GA401) series with ALC289
  ALSA: hda/realtek: enable headset mic of ASUS ROG Zephyrus G15(GA502) series with ALC289
  ALSA: usb-audio: Add implicit feedback quirk for SSL2

4 years agolibtraceevent: Fix build with binutils 2.35
Ben Hutchings [Sat, 25 Jul 2020 01:06:23 +0000 (02:06 +0100)]
libtraceevent: Fix build with binutils 2.35

In binutils 2.35, 'nm -D' changed to show symbol versions along with
symbol names, with the usual @@ separator.  When generating
libtraceevent-dynamic-list we need just the names, so strip off the
version suffix if present.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Tested-by: Salvatore Bonaccorso <carnil@debian.org>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-trace-devel@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
4 years agoperf tools: Fix record failure when mixed with ARM SPE event
Wei Li [Fri, 24 Jul 2020 07:11:10 +0000 (15:11 +0800)]
perf tools: Fix record failure when mixed with ARM SPE event

When recording with cache-misses and arm_spe_x event, I found that it
will just fail without showing any error info if i put cache-misses
after 'arm_spe_x' event.

  [root@localhost 0620]# perf record -e cache-misses \
-e arm_spe_0/ts_enable=1,pct_enable=1,pa_enable=1,load_filter=1,jitter=1,store_filter=1,min_latency=0/ sleep 1
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.067 MB perf.data ]
  [root@localhost 0620]#
  [root@localhost 0620]# perf record -e arm_spe_0/ts_enable=1,pct_enable=1,pa_enable=1,load_filter=1,jitter=1,store_filter=1,min_latency=0/ \
     -e  cache-misses sleep 1
  [root@localhost 0620]#

The current code can only work if the only event to be traced is an
'arm_spe_x', or if it is the last event to be specified. Otherwise the
last event type will be checked against all the arm_spe_pmus[i]->types,
none will match and an out of bound 'i' index will be used in
arm_spe_recording_init().

We don't support concurrent multiple arm_spe_x events currently, that
is checked in arm_spe_recording_options(), and it will show the relevant
info. So add the check and record of the first found 'arm_spe_pmu' to
fix this issue here.

Fixes: ffd3d18c20b8 ("perf tools: Add ARM Statistical Profiling Extensions (SPE) support")
Signed-off-by: Wei Li <liwei391@huawei.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by-by: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Hanjun Guo <guohanjun@huawei.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kim Phillips <kim.phillips@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lore.kernel.org/lkml/20200724071111.35593-2-liwei391@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
4 years agoperf tests: Fix test 68 zstd compression for s390
Thomas Richter [Wed, 29 Jul 2020 13:53:14 +0000 (15:53 +0200)]
perf tests: Fix test 68 zstd compression for s390

Commit 5aa98879efe7 ("s390/cpum_sf: prohibit callchain data collection")
prohibits call graph sampling for hardware events on s390. The
information recorded is out of context and does not match.

On s390 this commit now breaks test case 68 Zstd perf.data
compression/decompression.

Therefore omit call graph sampling on s390 in this test.

Output before:
  [root@t35lp46 perf]# ./perf test -Fv 68
  68: Zstd perf.data compression/decompression              :
  --- start ---
  Collecting compressed record file:
  Error:
  cycles: PMU Hardware doesn't support sampling/overflow-interrupts.
                                Try 'perf stat'
  ---- end ----
  Zstd perf.data compression/decompression: FAILED!
  [root@t35lp46 perf]#

Output after:
[root@t35lp46 perf]# ./perf test -Fv 68
  68: Zstd perf.data compression/decompression              :
  --- start ---
  Collecting compressed record file:
  500+0 records in
  500+0 records out
  256000 bytes (256 kB, 250 KiB) copied, 0.00615638 s, 41.6 MB/s
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.004 MB /tmp/perf.data.X3M,
                        compressed (original 0.002 MB, ratio is 3.609) ]
  Checking compressed events stats:
  # compressed : Zstd, level = 1, ratio = 4
        COMPRESSED events:          1
  2ELIFREPh---- end ----
  Zstd perf.data compression/decompression: Ok
  [root@t35lp46 perf]#

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Link: http://lore.kernel.org/lkml/20200729135314.91281-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>