On 2020/10/19 下午5:06, Zhenzhong Duan wrote:
In case failure to setup Post interrupt for an IRQ, it make no sense
to assign irqfd->producer to the producer.
This change makes code more robust.
It's better to describe what issue we will get without this patch.
Thanks
Signed-off-by: Zhenzh
On 2020/10/19 下午5:06, Zhenzhong Duan wrote:
If Post interrupt is disabled due to hardware limit or forcely disabled
by "intremap=nopost" parameter, return -EINVAL so that the legacy mode IRQ
isn't registered as IRQ bypass producer.
Is there any side effect if it was still registered?
With
On 2020/10/20 上午1:32, Michael S. Tsirkin wrote:
This reverts commit 3618ad2a7c0e78e4258386394d5d5f92a3dbccf8.
When the device does not have a control vq (e.g. when using a
version of QEMU based on upstream v0.10 or older, or when specifying
ctrl_vq=off,ctrl_rx=off,ctrl_vlan=off,ctrl_rx_extra=of
On 2020/10/19 下午10:56, Xie Yongji wrote:
This series introduces a framework, which can be used to implement
vDPA Devices in a userspace program. To implement it, the work
consist of two parts: control path emulating and data path offloading.
In the control path, the VDUSE driver will make use o
On 2020/10/20 上午10:18, 谢永吉 wrote:
How does this driver compare with vhost-user-blk (which doesn't
need kernel support)?
We want to implement a block device rather than a virtio-blk
dataplane. And with this driver's help, the vhost-user-blk process
could provide storage service to
On Mon, Oct 19, 2020 at 12:42:15PM -0700, Nick Desaulniers wrote:
> On Sat, Oct 17, 2020 at 10:43 PM Greg KH wrote:
> >
> > On Sat, Oct 17, 2020 at 09:09:28AM -0700, t...@redhat.com wrote:
> > > From: Tom Rix
> > >
> > > This is a upcoming change to clean up a new warning treewide.
> > > I am won
On Sat, Oct 17, 2020 at 10:43 PM Greg KH wrote:
>
> On Sat, Oct 17, 2020 at 09:09:28AM -0700, t...@redhat.com wrote:
> > From: Tom Rix
> >
> > This is a upcoming change to clean up a new warning treewide.
> > I am wondering if the change could be one mega patch (see below) or
> > normal patch per
On Mon, Oct 19, 2020 at 10:56:19PM +0800, Xie Yongji wrote:
> This series introduces a framework, which can be used to implement
> vDPA Devices in a userspace program. To implement it, the work
> consist of two parts: control path emulating and data path offloading.
>
> In the control path, the VD
- On Oct 17, 2020, at 2:10 PM, Andy Lutomirski l...@kernel.org wrote:
> On Fri, Oct 16, 2020 at 6:40 PM Jann Horn wrote:
>>
>> [adding some more people who are interested in RNG stuff: Andy, Jason,
>> Theodore, Willy Tarreau, Eric Biggers. also linux-api@, because this
>> concerns some pretty
Hi Tom
On Mon, Oct 19, 2020 at 09:31:15AM -0700, t...@redhat.com wrote:
> From: Tom Rix
>
> A break is not needed if it is preceded by a return or break
>
> Signed-off-by: Tom Rix
Looks good and builds with no warnings.
One of the diffs made me - "oh this looks wrong". But after I looked agai
On Mon, Oct 19, 2020 at 11:56:35PM +0800, 谢永吉 wrote:
>
>
>
> On Mon, Oct 19, 2020 at 11:47 PM Michael S. Tsirkin wrote:
>
> On Mon, Oct 19, 2020 at 11:44:36PM +0800, 谢永吉 wrote:
> >
> >
> > On Mon, Oct 19, 2020 at 11:05 PM Michael S. Tsirkin
> wrote:
> >
> > On
On Mon, Oct 19, 2020 at 11:44:36PM +0800, 谢永吉 wrote:
>
>
> On Mon, Oct 19, 2020 at 11:05 PM Michael S. Tsirkin wrote:
>
> On Mon, Oct 19, 2020 at 10:56:22PM +0800, Xie Yongji wrote:
> > The module should not be unloaded if any vduse device exists.
> > So increase the module's refere
On Mon, Oct 19, 2020 at 11:45:05AM +0200, Christian König wrote:
> Hi Thomas,
>
> [SNIP]
> > > > +int ttm_bo_vmap(struct ttm_buffer_object *bo, struct dma_buf_map
> > > > *map)
> > > > +{
> > > > + struct ttm_resource *mem = &bo->mem;
> > > > + int ret;
> > > > +
> > > > + ret = ttm_m
On 10/19/20 8:08 AM, Michael S. Tsirkin wrote:
> On Mon, Oct 19, 2020 at 10:56:21PM +0800, Xie Yongji wrote:
>> diff --git a/include/uapi/linux/vduse.h b/include/uapi/linux/vduse.h
>> +#define VDUSE_BASE 'V'
>> +
>
> Could we see some documentation about the user interface of this module
> plea
On Mon, Oct 19, 2020 at 10:56:20PM +0800, Xie Yongji wrote:
> Export zap_page_range() for use in VDUSE.
I think you're missing a lot of MMU notifier work by calling this
directly. It probably works in every scenario you've tested, but won't
work for others. I see you're using VM_MIXEDMAP -- woul
On Mon, Oct 19, 2020 at 10:56:21PM +0800, Xie Yongji wrote:
> diff --git a/include/uapi/linux/vduse.h b/include/uapi/linux/vduse.h
> new file mode 100644
> index ..855d2116b3a6
> --- /dev/null
> +++ b/include/uapi/linux/vduse.h
> @@ -0,0 +1,85 @@
> +/* SPDX-License-Identifier: GPL-2.0 *
On Mon, Oct 19, 2020 at 10:56:22PM +0800, Xie Yongji wrote:
> The module should not be unloaded if any vduse device exists.
> So increase the module's reference count when creating vduse
> device. And the reference count is kept until the device is
> destroyed.
>
> Signed-off-by: Xie Yongji
> ---
On Sun, Oct 18, 2020 at 09:14:00AM -0700, Andy Lutomirski wrote:
> On Sun, Oct 18, 2020 at 8:59 AM Michael S. Tsirkin wrote:
> >
> > On Sun, Oct 18, 2020 at 08:54:36AM -0700, Andy Lutomirski wrote:
> > > On Sun, Oct 18, 2020 at 8:52 AM Michael S. Tsirkin
> > > wrote:
> > > >
> > > > On Sat, Oct
On 18.10.20 14:41, Wei Yang wrote:
> On Fri, Oct 16, 2020 at 03:17:06PM +0200, David Hildenbrand wrote:
>> On 16.10.20 10:53, Wei Yang wrote:
>>> On Mon, Oct 12, 2020 at 02:53:14PM +0200, David Hildenbrand wrote:
Let's rename to "sbs_per_mb" and "sb_size" and move accordingly.
Cc: "M
On 19.10.20 03:57, Wei Yang wrote:
> On Mon, Oct 12, 2020 at 02:53:15PM +0200, David Hildenbrand wrote:
>> Let's rename accordingly.
>>
>> Cc: "Michael S. Tsirkin"
>> Cc: Jason Wang
>> Cc: Pankaj Gupta
>> Signed-off-by: David Hildenbrand
>> ---
>> drivers/virtio/virtio_mem.c | 29 ++
Hi Thomas,
[SNIP]
+int ttm_bo_vmap(struct ttm_buffer_object *bo, struct dma_buf_map *map)
+{
+ struct ttm_resource *mem = &bo->mem;
+ int ret;
+
+ ret = ttm_mem_io_reserve(bo->bdev, mem);
+ if (ret)
+ return ret;
+
+ if (mem->bus.is_iomem) {
+ void __iomem *vaddr_
On 19.10.20 04:26, Wei Yang wrote:
> On Mon, Oct 12, 2020 at 02:53:19PM +0200, David Hildenbrand wrote:
>> Currently, we do not support device block sizes that exceed the Linux
>> memory block size. For example, having a device block size of 1 GiB (e.g.,
>> gigantic pages in the hypervisor) won't w
On 19.10.20 05:48, Wei Yang wrote:
> On Mon, Oct 12, 2020 at 02:53:22PM +0200, David Hildenbrand wrote:
>> Let's try to unplug completely offline big blocks first. Then, (if
>> enabled via unplug_offline) try to offline and remove whole big blocks.
>>
>> No locking necessary - we can deal with conc
Hi Christian
On 15.10.20 16:08, Christian König wrote:
> Am 15.10.20 um 14:38 schrieb Thomas Zimmermann:
>> The new functions ttm_bo_{vmap,vunmap}() map and unmap a TTM BO in kernel
>> address space. The mapping's address is returned as struct dma_buf_map.
>> Each function is a simplified version
On 18.10.20 05:57, Wei Yang wrote:
> On Fri, Oct 16, 2020 at 11:18:39AM +0200, David Hildenbrand wrote:
>> On 16.10.20 06:03, Wei Yang wrote:
>>> On Mon, Oct 12, 2020 at 02:53:03PM +0200, David Hildenbrand wrote:
Let's trigger from offlining code when we're not allowed to touch online
>
> Her
On 19.10.20 09:54, Wei Yang wrote:
> On Mon, Oct 12, 2020 at 02:53:23PM +0200, David Hildenbrand wrote:
>> Let's add a safe mechanism to unplug memory, avoiding long/endless loops
>> when trying to offline memory - similar to in SBM.
>>
>> Fake-offline all memory (via alloc_contig_range()) before t
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