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* Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds2020-08-1135-239/+3554
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull virtio updates from Michael Tsirkin: - IRQ bypass support for vdpa and IFC - MLX5 vdpa driver - Endianness fixes for virtio drivers - Misc other fixes * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (71 commits) vdpa/mlx5: fix up endian-ness for mtu vdpa: Fix pointer math bug in vdpasim_get_config() vdpa/mlx5: Fix pointer math in mlx5_vdpa_get_config() vdpa/mlx5: fix memory allocation failure checks vdpa/mlx5: Fix uninitialised variable in core/mr.c vdpa_sim: init iommu lock virtio_config: fix up warnings on parisc vdpa/mlx5: Add VDPA driver for supported mlx5 devices vdpa/mlx5: Add shared memory registration code vdpa/mlx5: Add support library for mlx5 VDPA implementation vdpa/mlx5: Add hardware descriptive header file vdpa: Modify get_vq_state() to return error code net/vdpa: Use struct for set/get vq state vdpa: remove hard coded virtq num vdpasim: support batch updating vhost-vdpa: support IOTLB batching hints vhost-vdpa: support get/set backend features vhost: generialize backend features setting/getting vhost-vdpa: refine ioctl pre-processing vDPA: dont change vq irq after DRIVER_OK ...
| * vdpa/mlx5: fix up endian-ness for mtuMichael S. Tsirkin2020-08-101-1/+11
| | | | | | | | | | | | | | | | | | | | | | VDPA mlx5 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>
| * vdpa: Fix pointer math bug in vdpasim_get_config()Dan Carpenter2020-08-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | If "offset" is non-zero then we end up copying from beyond the end of the config because of pointer math. We can fix this by casting the struct to a u8 pointer. Fixes: 2c53d0f64c06 ("vdpasim: vDPA device simulator") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20200406144552.GF68494@mwanda Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>
| * vdpa/mlx5: Fix pointer math in mlx5_vdpa_get_config()Dan Carpenter2020-08-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a pointer math bug here so if "offset" is non-zero then this will copy memory from beyond the end of the array. Fixes: 1a86b377aa21 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20200808093241.GB115053@mwanda Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Eli Cohen <elic@nvidia.com> Cc: Jason Wang <jasowang@redhat.com>; Parav Pandit <parav@mellanox.com>; virtualization@lists.linux-foundation.org; linux-kernel@vger.kernel.org; kernel-janitors@vger.kernel.org Fixes: 1a86b377aa21 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
| * vdpa/mlx5: fix memory allocation failure checksColin Ian King2020-08-101-7/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The memory allocation failure checking for in and out is currently checking if the pointers are valid rather than the contents of what they point to. Hence the null check on failed memory allocations is incorrect. Fix this by adding the missing indirection in the check. Also for the default case, just set the *in and *out to null as these don't have any thing allocated to kfree. Finally remove the redundant *in and *out check as these have been already done on each allocation in the case statement. Addresses-Coverity: ("Null pointer dereference") Fixes: 1a86b377aa21 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices") Signed-off-by: Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20200806160828.90463-1-colin.king@canonical.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Acked-by: Eli Cohen <eli@mellanox.com>
| * vdpa/mlx5: Fix uninitialised variable in core/mr.cAlex Dewar2020-08-101-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * vdpa_sim: init iommu lockMichael S. Tsirkin2020-08-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | 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>
| * vdpa/mlx5: Add VDPA driver for supported mlx5 devicesEli Cohen2020-08-066-2/+2080
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * vdpa/mlx5: Add shared memory registration codeEli Cohen2020-08-065-2/+522
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * vdpa/mlx5: Add support library for mlx5 VDPA implementationEli Cohen2020-08-066-0/+350
| | | | | | | | | | | | | | | | | | | | | | 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>
| * vdpa/mlx5: Add hardware descriptive header fileEli Cohen2020-08-061-0/+168
| | | | | | | | | | | | | | | | | | 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>
| * vdpa: Modify get_vq_state() to return error codeEli Cohen2020-08-063-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | 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>
| * net/vdpa: Use struct for set/get vq stateEli Cohen2020-08-065-14/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * vdpa: remove hard coded virtq numMax Gurtovoy2020-08-064-9/+10
| | | | | | | | | | | | | | | | | | | | 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>
| * vdpasim: support batch updatingJason Wang2020-08-061-3/+37
| | | | | | | | | | | | | | | | | | | | | | | | 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>
| * vhost-vdpa: support IOTLB batching hintsJason Wang2020-08-061-9/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * vhost-vdpa: support get/set backend featuresJason Wang2020-08-061-0/+18
| | | | | | | | | | | | | | | | | | | | 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>
| * vhost: generialize backend features setting/gettingJason Wang2020-08-063-16/+19
| | | | | | | | | | | | | | | | | | 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>
| * vhost-vdpa: refine ioctl pre-processingJason Wang2020-08-061-4/+5
| | | | | | | | | | | | | | | | 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>
| * Merge branch 'mlx5-next' of ↵Michael S. Tsirkin2020-08-0612-53/+49
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/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>
| * | vDPA: dont change vq irq after DRIVER_OKZhu Lingshan2020-08-051-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | virtio_pci_modern: Fix the comment of virtio_pci_find_capability()Liao Pingfang2020-08-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | ifcvf: implement vdpa_config_ops.get_vq_irq()Zhu Lingshan2020-08-051-2/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | vhost_vdpa: implement IRQ offloading in vhost_vdpaZhu Lingshan2020-08-052-1/+63
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | vhost: introduce vhost_vring_callZhu Lingshan2020-08-053-9/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | vhost: Use flex_array_size() helper in copy_from_user()Gustavo A. R. Silva2020-08-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | vdpasim: protect concurrent access to iommu iotlbMax Gurtovoy2020-08-051-4/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | vhost: vdpa: remove per device feature whitelistJason Wang2020-08-051-37/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | virtio_ring: Avoid loop when vq is broken in virtqueue_pollMao Wenan2020-08-051-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | virtio_net: use LE accessors for speed/duplexMichael S. Tsirkin2020-08-051-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | virtio-iommu: convert to LE accessorsMichael S. Tsirkin2020-08-051-17/+17
| | | | | | | | | | | | | | | | | | Virtio iommu is modern-only. Use LE accessors for config space. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| * | virtio_mem: convert to LE accessorsMichael S. Tsirkin2020-08-051-15/+15
| | | | | | | | | | | | | | | | | | Virtio mem is modern-only. Use LE accessors for config space. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| * | drm/virtio: convert to LE accessorsMichael S. Tsirkin2020-08-051-8/+8
| | | | | | | | | | | | | | | | | | Virtgpu is modern-only. Use LE accessors for config space. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| * | virtio_pmem: convert to LE accessorsMichael S. Tsirkin2020-08-051-2/+2
| | | | | | | | | | | | | | | | | | Virtio pmem is modern-only. Use LE accessors for config space. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| * | virtio_crypto: convert to LE accessorsMichael S. Tsirkin2020-08-051-23/+23
| | | | | | | | | | | | | | | | | | Virtio crypto is modern-only. Use LE accessors for config space. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| * | virtio_input: convert to LE accessorsMichael S. Tsirkin2020-08-051-16/+16
| | | | | | | | | | | | | | | | | | Virtio input is modern-only. Use LE accessors for config space. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| * | virtio_balloon: use LE config space accessesMichael S. Tsirkin2020-08-051-17/+9
| | | | | | | | | | | | | | | | | | Balloon is LE, it's cleaner to access it as such directly. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| * | vdpa_sim: fix endian-ness of config spaceMichael S. Tsirkin2020-08-051-5/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | virtio_vdpa: legacy features handlingMichael S. Tsirkin2020-08-051-6/+3
| | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | vhost/vdpa: switch to new helpersMichael S. Tsirkin2020-08-051-5/+3
| | | | | | | | | | | | | | | | | | | | | 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>
| * | vdpa: make sure set_features is invoked for legacyMichael S. Tsirkin2020-08-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | mlxbf-tmfifo: sparse tags for config accessMichael S. Tsirkin2020-08-051-3/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | virtio_scsi: correct tags for config space fieldsMichael S. Tsirkin2020-08-051-2/+2
| | | | | | | | | | | | | | | | | | | | | 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>
| * | virtio_balloon: fix sparse warningMichael S. Tsirkin2020-08-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | virtio: virtio_has_iommu_quirk -> virtio_has_dma_quirkMichael S. Tsirkin2020-08-033-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | virtio: VIRTIO_F_IOMMU_PLATFORM -> VIRTIO_F_ACCESS_PLATFORMMichael S. Tsirkin2020-08-036-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | 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>
* | | Merge tag 'iommu-updates-v5.9' of ↵Linus Torvalds2020-08-1145-523/+1184
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu updates from Joerg Roedel: - Remove of the dev->archdata.iommu (or similar) pointers from most architectures. Only Sparc is left, but this is private to Sparc as their drivers don't use the IOMMU-API. - ARM-SMMU updates from Will Deacon: - Support for SMMU-500 implementation in Marvell Armada-AP806 SoC - Support for SMMU-500 implementation in NVIDIA Tegra194 SoC - DT compatible string updates - Remove unused IOMMU_SYS_CACHE_ONLY flag - Move ARM-SMMU drivers into their own subdirectory - Intel VT-d updates from Lu Baolu: - Misc tweaks and fixes for vSVA - Report/response page request events - Cleanups - Move the Kconfig and Makefile bits for the AMD and Intel drivers into their respective subdirectory. - MT6779 IOMMU Support - Support for new chipsets in the Renesas IOMMU driver - Other misc cleanups and fixes (e.g. to improve compile test coverage) * tag 'iommu-updates-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (77 commits) iommu/amd: Move Kconfig and Makefile bits down into amd directory iommu/vt-d: Move Kconfig and Makefile bits down into intel directory iommu/arm-smmu: Move Arm SMMU drivers into their own subdirectory iommu/vt-d: Skip TE disabling on quirky gfx dedicated iommu iommu: Add gfp parameter to io_pgtable_ops->map() iommu: Mark __iommu_map_sg() as static iommu/vt-d: Rename intel-pasid.h to pasid.h iommu/vt-d: Add page response ops support iommu/vt-d: Report page request faults for guest SVA iommu/vt-d: Add a helper to get svm and sdev for pasid iommu/vt-d: Refactor device_to_iommu() helper iommu/vt-d: Disable multiple GPASID-dev bind iommu/vt-d: Warn on out-of-range invalidation address iommu/vt-d: Fix devTLB flush for vSVA iommu/vt-d: Handle non-page aligned address iommu/vt-d: Fix PASID devTLB invalidation iommu/vt-d: Remove global page support in devTLB flush iommu/vt-d: Enforce PASID devTLB field mask iommu: Make some functions static iommu/amd: Remove double zero check ...
| * \ \ Merge tag 'arm-smmu-updates' of ↵Joerg Roedel2020-07-2911-5/+9
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into next More Arm SMMU updates for 5.9 - Move Arm SMMU driver files into their own subdirectory
| | * | | iommu/arm-smmu: Move Arm SMMU drivers into their own subdirectoryWill Deacon2020-07-2711-4/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Arm SMMU drivers are getting fat on vendor value-add, so move them to their own subdirectory out of the way of the other IOMMU drivers. Suggested-by: Joerg Roedel <joro@8bytes.org> Signed-off-by: Will Deacon <will@kernel.org>
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| *-----------------. \ \ \ Merge branches 'arm/renesas', 'arm/qcom', 'arm/mediatek', 'arm/omap', ↵Joerg Roedel2020-07-2941-519/+1176
| |\ \ \ \ \ \ \ \ \ \ \ \ \ | | | | | | | | |_|_|_|/ / / | | | | | | | |/| | | | | | | | | | | | | | | | | | | | 'arm/exynos', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next
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