On 2018年01月26日 07:36, Michael S. Tsirkin wrote:
Offset 128 overlaps the last word of the redzone.
Use 132 which is always beyond that.
Signed-off-by: Michael S. Tsirkin
---
tools/virtio/ringtest/main.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/virtio/ringtes
On 01/26/2018 10:42 AM, Michael S. Tsirkin wrote:
On Fri, Jan 26, 2018 at 09:40:44AM +0800, Wei Wang wrote:
On 01/25/2018 09:49 PM, Michael S. Tsirkin wrote:
On Thu, Jan 25, 2018 at 05:14:06PM +0800, Wei Wang wrote:
The controversy is that the free list is not static
once the lock is droppe
On 01/25/2018 09:41 PM, Michael S. Tsirkin wrote:
On Wed, Jan 24, 2018 at 06:42:41PM +0800, Wei Wang wrote:
This patch adds support to walk through the free page blocks in the
system and report them via a callback function. Some page blocks may
leave the free list after zone->lock is released, s
On Fri, Jan 26, 2018 at 09:40:44AM +0800, Wei Wang wrote:
> On 01/25/2018 09:49 PM, Michael S. Tsirkin wrote:
> > On Thu, Jan 25, 2018 at 05:14:06PM +0800, Wei Wang wrote:
> > > +
> > > +static void report_free_page_func(struct work_struct *work)
> > > +{
> > > + struct virtio_balloon *vb;
> > > +
On 01/26/2018 06:41 AM, Andrew Morton wrote:
On Thu, 25 Jan 2018 17:38:27 +0800 Wei Wang wrote:
This patch adds support to walk through the free page blocks in the
system and report them via a callback function. Some page blocks may
leave the free list after zone->lock is released, so it is th
On 01/25/2018 09:49 PM, Michael S. Tsirkin wrote:
On Thu, Jan 25, 2018 at 05:14:06PM +0800, Wei Wang wrote:
+
+static void report_free_page_func(struct work_struct *work)
+{
+ struct virtio_balloon *vb;
+ int ret;
+
+ vb = container_of(work, struct virtio_balloon, report_free_p
Offset 128 overlaps the last word of the redzone.
Use 132 which is always beyond that.
Signed-off-by: Michael S. Tsirkin
---
tools/virtio/ringtest/main.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/virtio/ringtest/main.h b/tools/virtio/ringtest/main.h
index 593a328.
Signed-off-by: Michael S. Tsirkin
---
tools/virtio/linux/kernel.h | 2 +-
tools/virtio/linux/thread_info.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
create mode 100644 tools/virtio/linux/thread_info.h
diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
index
This is to make ptr_ring test build again.
Signed-off-by: Michael S. Tsirkin
---
tools/virtio/ringtest/main.h | 57
1 file changed, 57 insertions(+)
diff --git a/tools/virtio/ringtest/main.h b/tools/virtio/ringtest/main.h
index 5706e07..593a328 10064
We don't rely on lockless guarantees, but it
seems cleaner than inverting __ptr_ring_peek.
Signed-off-by: Michael S. Tsirkin
---
tools/virtio/ringtest/ptr_ring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/virtio/ringtest/ptr_ring.c b/tools/virtio/ringtest/ptr_ring.
On Thu, 25 Jan 2018 17:38:27 +0800 Wei Wang wrote:
> This patch adds support to walk through the free page blocks in the
> system and report them via a callback function. Some page blocks may
> leave the free list after zone->lock is released, so it is the caller's
> responsibility to either dete
On Thu, Jan 25, 2018 at 09:56:01AM -0500, Pankaj Gupta wrote:
>
> >
> > On Wed, Jan 24, 2018 at 06:42:41PM +0800, Wei Wang wrote:
> > > This patch adds support to walk through the free page blocks in the
> > > system and report them via a callback function. Some page blocks may
> > > leave the fr
>
> On Wed, Jan 24, 2018 at 06:42:41PM +0800, Wei Wang wrote:
> > This patch adds support to walk through the free page blocks in the
> > system and report them via a callback function. Some page blocks may
> > leave the free list after zone->lock is released, so it is the caller's
> > responsibi
We don't stop device before reset owner, this means we could try to
serve any virtqueue kick before reset dev->worker. This will result a
warn since the work was pending at llist during owner resetting. Fix
this by stopping device during owner reset.
Reported-by: syzbot+eb17c6162478cc506...@syzkal
On Thu, Jan 25, 2018 at 05:14:06PM +0800, Wei Wang wrote:
> 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 pages by sending a new cmd
> id to the guest
On Thu, Jan 25, 2018 at 05:14:05PM +0800, Wei Wang wrote:
> This patch adds support to walk through the free page blocks in the
> system and report them via a callback function. Some page blocks may
> leave the free list after zone->lock is released, so it is the caller's
> responsibility to either
On Wed, Jan 24, 2018 at 06:42:41PM +0800, Wei Wang wrote:
> This patch adds support to walk through the free page blocks in the
> system and report them via a callback function. Some page blocks may
> leave the free list after zone->lock is released, so it is the caller's
> responsibility to either
On 01/25/2018 07:28 PM, Tetsuo Handa wrote:
On 2018/01/25 12:32, Wei Wang wrote:
On 01/25/2018 01:15 AM, Michael S. Tsirkin wrote:
On Wed, Jan 24, 2018 at 06:42:42PM +0800, Wei Wang wrote:
+
+static void report_free_page_func(struct work_struct *work)
+{
+struct virtio_balloon *vb;
+uns
On 2018/01/25 12:32, Wei Wang wrote:
> On 01/25/2018 01:15 AM, Michael S. Tsirkin wrote:
>> On Wed, Jan 24, 2018 at 06:42:42PM +0800, Wei Wang wrote:
>> +
>> +static void report_free_page_func(struct work_struct *work)
>> +{
>> +struct virtio_balloon *vb;
>> +unsigned long flags;
>> +
>> +
Hi Michal,
On 01/25/2018 05:38 PM, Wei Wang wrote:
This patch adds support to walk through the free page blocks in the
system and report them via a callback function. Some page blocks may
leave the free list after zone->lock is released, so it is the caller's
responsibility to either detect or p
This patch adds support to walk through the free page blocks in the
system and report them via a callback function. Some page blocks may
leave the free list after zone->lock is released, so it is the caller's
responsibility to either detect or prevent the use of such pages.
One use example of this
On 01/25/2018 01:15 AM, Michael S. Tsirkin wrote:
On Wed, Jan 24, 2018 at 06:42:42PM +0800, Wei Wang wrote:
What is this doing? Basically handling the case where vq is broken?
It's kind of ugly to tweak feature bits, most code assumes they never
change. Please just return an error to caller
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.
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 pages by sending a new cmd
id to the guest via the free_page_report_cmd_id configuration register.
When the gu
This patch adds support to walk through the free page blocks in the
system and report them via a callback function. Some page blocks may
leave the free list after zone->lock is released, so it is the caller's
responsibility to either detect or prevent the use of such pages.
One use example of this
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