On Wed, Jul 11, 2018 at 07:00:37AM +0300, Michael S. Tsirkin wrote:
> On Tue, Jul 10, 2018 at 10:33:08AM -0700, Linus Torvalds wrote:
> > NAK.
> >
> > On Tue, Jul 10, 2018 at 2:56 AM Wei Wang wrote:
> > >
> > > +
> > > + buf_page = list_first_entry_or_null(pages, struct page, lru);
> > > +
On Tue, Jul 10, 2018 at 10:33:08AM -0700, Linus Torvalds wrote:
> NAK.
>
> On Tue, Jul 10, 2018 at 2:56 AM Wei Wang wrote:
> >
> > +
> > + buf_page = list_first_entry_or_null(pages, struct page, lru);
> > + if (!buf_page)
> > + return -EINVAL;
> > + buf = (__le64 *
On 2018年07月11日 10:27, Tiwei Bie wrote:
Hello everyone,
This patch set implements packed ring support in virtio driver.
Some functional tests have been done with Jason's
packed ring implementation in vhost:
https://lkml.org/lkml/2018/7/3/33
Both of ping and netperf worked as expected.
v1 -
Hello everyone,
This patch set implements packed ring support in virtio driver.
Some functional tests have been done with Jason's
packed ring implementation in vhost:
https://lkml.org/lkml/2018/7/3/33
Both of ping and netperf worked as expected.
v1 -> v2:
- Use READ_ONCE() to read event off_wr
Signed-off-by: Tiwei Bie
---
include/uapi/linux/virtio_config.h | 3 +++
include/uapi/linux/virtio_ring.h | 43 ++
2 files changed, 46 insertions(+)
diff --git a/include/uapi/linux/virtio_config.h
b/include/uapi/linux/virtio_config.h
index 449132c76b1c..1196e1c1d4
This commit introduces the support for creating packed ring.
All split ring specific functions are added _split suffix.
Some necessary stubs for packed ring are also added.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 801 +++
include/linux/virtio_r
This commit introduces the EVENT_IDX support in packed ring.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 73
1 file changed, 65 insertions(+), 8 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index f317b
This commit introduces the support (without EVENT_IDX) for
packed ring.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 495 ++-
1 file changed, 487 insertions(+), 8 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
Signed-off-by: Tiwei Bie
---
drivers/s390/virtio/virtio_ccw.c | 14 ++
drivers/virtio/virtio_ring.c | 2 ++
2 files changed, 16 insertions(+)
diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index 8f5c1d7f751a..8654f3a94635 100644
--- a/drivers/s3
On 07/11/2018 01:33 AM, Linus Torvalds wrote:
NAK.
On Tue, Jul 10, 2018 at 2:56 AM Wei Wang wrote:
+
+ buf_page = list_first_entry_or_null(pages, struct page, lru);
+ if (!buf_page)
+ return -EINVAL;
+ buf = (__le64 *)page_address(buf_page);
Stop this garbage.
On Tue, Jul 10, 2018 at 01:50:03PM +0800, Jason Wang wrote:
> On 2018年07月09日 15:22, Tiwei Bie wrote:
> > @@ -1059,9 +1059,19 @@ static bool virtqueue_kick_prepare_packed(struct
> > virtqueue *_vq)
> > * suppressions. */
> > virtio_mb(vq->weak_barriers);
> > + old = vq->next_avail_idx -
On Tue, Jul 10, 2018 at 01:51:20PM +0800, Jason Wang wrote:
> On 2018年07月09日 15:22, Tiwei Bie wrote:
> > Signed-off-by: Tiwei Bie
> > ---
> > drivers/s390/virtio/virtio_ccw.c | 8
> > drivers/virtio/virtio_ring.c | 2 ++
> > 2 files changed, 10 insertions(+)
> >
> > diff --git a/
On Mon, Jul 9, 2018 at 6:54 PM, Michael S. Tsirkin wrote:
> On Mon, Jul 09, 2018 at 06:11:53PM -0700, si-wei liu wrote:
>> The plan is to enable group ID based matching in the first place rather than
>> match by MAC, the latter of which is fragile and problematic.
>
> It isn't all that fragile - h
On Mon, Jul 9, 2018 at 6:58 PM, Michael S. Tsirkin wrote:
> On Mon, Jul 09, 2018 at 06:11:53PM -0700, si-wei liu wrote:
>> What do we buy
>> for using a random address during initial discovery and requiring VF to
>> complete the handshake?
>
> I don't see advantages to using a random address that
On 2018-07-10 05:11:18 +0300, Michael S. Tsirkin wrote:
> On Fri, Jun 29, 2018 at 05:19:03PM -0500, Venu Busireddy wrote:
> > The current patch set includes all the feedback received for proposals [3]
> > and [4]. For the sake of completeness, patch for the virtio specification
> > is also included
On Tuesday, July 10, 2018 5:31 PM, Wang, Wei W wrote:
> Subject: [PATCH v35 1/5] mm: support to get hints of free page blocks
>
> This patch adds support to get free page blocks from a free page list.
> The physical addresses of the blocks are stored to a list of buffers passed
> from the caller.
Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the
support of reporting hints of guest free pages to host via virtio-balloon.
Host requests the guest to report free page hints by sending a new cmd id
to the guest via the free_page_report_cmd_id configuration register.
As the
It's a bit overkill to use BUG when failing to add an entry to the
stats_vq in init_vqs. So remove it and just return the error to the
caller to bail out nicely.
Signed-off-by: Wei Wang
Cc: Michael S. Tsirkin
---
drivers/virtio/virtio_balloon.c | 10 +++---
1 file changed, 7 insertions(+),
The VIRTIO_BALLOON_F_PAGE_POISON feature bit is used to indicate if the
guest is using page poisoning. Guest writes to the poison_val config
field to tell host about the page poisoning value that is in use.
Suggested-by: Michael S. Tsirkin
Signed-off-by: Wei Wang
Cc: Michael S. Tsirkin
Cc: Mich
This patch series is separated from the previous "Virtio-balloon
Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_HINT,
implemented by this series enables the virtio-balloon driver to report
hints of guest free pages to the host. It can be used to accelerate live
migration of VMs.
In some usages, e.g. virtio-balloon, a kernel module needs to know if
page poisoning is in use. This patch exposes the page_poisoning_enabled
function to kernel modules.
Signed-off-by: Wei Wang
Cc: Andrew Morton
Cc: Michal Hocko
Cc: Michael S. Tsirkin
Acked-by: Andrew Morton
---
mm/page_pois
This patch adds support to get free page blocks from a free page list.
The physical addresses of the blocks are stored to a list of buffers
passed from the caller. The obtained free page blocks are hints about
free pages, because there is no guarantee that they are still on the free
page list after
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