Hi Jean,
On 3/18/20 12:40 PM, Jean-Philippe Brucker wrote:
> We don't currently support IOMMUs with a page granule larger than the
> system page size. The IOVA allocator has a BUG_ON() in this case, and
> VFIO has a WARN_ON().
>
> It might be possible to remove these obstacles if necessary. If
On 2020/3/25 下午8:34, Jason Gunthorpe wrote:
On Wed, Mar 25, 2020 at 04:27:11PM +0800, Jason Wang wrote:
+static int ifcvf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct device *dev = >dev;
+ struct ifcvf_adapter *adapter;
+ struct ifcvf_hw *vf;
+
On 2020/3/25 下午8:29, Jason Gunthorpe wrote:
On Wed, Mar 25, 2020 at 04:27:07PM +0800, Jason Wang wrote:
+struct vdpa_device *__vdpa_alloc_device(struct device *parent,
+ const struct vdpa_config_ops *config,
+ size_t
On Wed, Mar 25, 2020 at 04:27:07PM +0800, Jason Wang wrote:
> +struct vdpa_device *__vdpa_alloc_device(struct device *parent,
> + const struct vdpa_config_ops *config,
> + size_t size);
> +
> +#define
On Wed, Mar 25, 2020 at 04:27:11PM +0800, Jason Wang wrote:
> +static int ifcvf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
> +{
> + struct device *dev = >dev;
> + struct ifcvf_adapter *adapter;
> + struct ifcvf_hw *vf;
> + int ret, i;
> +
> + ret =
+ Masami.
On Thu, Mar 19, 2020 at 10:13:02AM +0100, Joerg Roedel wrote:
> From: Joerg Roedel
>
> The inat-tables.c file has some arrays in it that contain pointers to
> other arrays. These pointers need to be relocated when the kernel
> image is moved to a different location.
>
> The
On 2020/3/25 上午10:25, kbuild test robot wrote:
I love your patch! Yet something to improve:
[auto build test ERROR on vhost/linux-next]
[also build test ERROR on linux/master linus/master v5.6-rc7 next-20200324]
[if your patch is applied to the wrong git tree, please drop us a note to help
vDPA device is a device that uses a datapath which complies with the
virtio specifications with vendor specific control path. vDPA devices
can be both physically located on the hardware or emulated by
software. vDPA hardware devices are usually implemented through PCIE
with the following types:
-
From: Zhu Lingshan
This commit introduced two layers to drive IFC VF:
(1) ifcvf_base layer, which handles IFC VF NIC hardware operations and
configurations.
(2) ifcvf_main layer, which complies to VDPA bus framework,
implemented device operations for VDPA bus, handles device probe,
Hi all:
This is an update version of vDPA support in kernel.
vDPA device is a device that uses a datapath which complies with the
virtio specifications with vendor specific control path. vDPA devices
can be both physically located on the hardware or emulated by
software. vDPA hardware devices
Currently, CONFIG_VHOST depends on CONFIG_VIRTUALIZATION. But vhost is
not necessarily for VM since it's a generic userspace and kernel
communication protocol. Such dependency may prevent archs without
virtualization support from using vhost.
To solve this, a dedicated vhost menu is created under
This patch allow device to register its own message handler during
vhost_dev_init(). vDPA device will use it to implement its own DMA
mapping logic.
Signed-off-by: Jason Wang
---
drivers/vhost/net.c | 3 ++-
drivers/vhost/scsi.c | 2 +-
drivers/vhost/vhost.c | 12 ++--
This patch factors out IOTLB into a dedicated module in order to be
reused by other modules like vringh. User may choose to enable the
automatic retiring by specifying VHOST_IOTLB_FLAG_RETIRE flag to fit
for the case of vhost device IOTLB implementation.
Signed-off-by: Jason Wang
---
This patch implements the third memory accessor for vringh besides
current kernel and userspace accessors. This idea is to allow vringh
to do the address translation through an IOTLB which is implemented
via vhost_map interval tree. Users should setup and IOVA to PA mapping
in this IOTLB.
This
This patch introduces a vDPA transport for virtio. This is used to
use kernel virtio driver to drive the vDPA device that is capable
of populating virtqueue directly.
A new virtio-vdpa driver will be registered to the vDPA bus, when a
new virtio-vdpa device is probed, it will register the device
From: Tiwei Bie
This patch introduces a vDPA-based vhost backend. This backend is
built on top of the same interface defined in virtio-vDPA and provides
a generic vhost interface for userspace to accelerate the virtio
devices in guest.
This backend is implemented as a vDPA device driver on top
This patch implements a software vDPA networking device. The datapath
is implemented through vringh and workqueue. The device has an on-chip
IOMMU which translates IOVA to PA. For kernel virtio drivers, vDPA
simulator driver provides dma_ops. For vhost driers, set_map() methods
of vdpa_config_ops
On Sat, Feb 15, 2020 at 01:11:45PM +0100, Juerg Haefliger wrote:
> The QEMU default edid=off results in a kernel crash [1] on arm64 due
> to commit [2]. To reproduce:
Should be fixed in qemu 5.0-rc0
cheers,
Gerd
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