Re: [Qemu-devel] [PATCH 0/4] virtio-balloon: assorted fixes

[Stefan Hajnoczi]

On Thu, Aug 18, 2016 at 09:27:50PM +0300, Roman Kagan wrote:
> This patchset addresses a few problems discovered when analyzing aborts
> of (an older version of) QEMU with backported commit
> afd9096eb1882f23929f5b5c177898ed231bac66 "virtio: error out if guest
> exceeds virtqueue size".  Those problems are present in master, too,
> except that they don't trigger an abort and are thus not as easy to
> notice.
> 
> 
> Roman Kagan (4):
>   virtio: assert on ->inuse underflow
>   virtio-balloon: make stats virtqueue length 1
>   virtio-balloon: don't restart stats timer in callback
>   virtio-balloon: keep collecting stats on save/restore
> 
> Cc: "Michael S. Tsirkin" 
> 
>  hw/virtio/virtio-balloon.c | 49 
> +-
>  hw/virtio/virtio.c |  3 ++-
>  include/hw/virtio/virtio-balloon.h |  1 +
>  3 files changed, 30 insertions(+), 23 deletions(-)

Please see these related patches on the mailing list:

1. [PATCH v3] balloon: Fix failure of updating guest memory status

   This addresses the virtio-balloon stats virtqueue hang after
   migration.

2. [PATCH 0/2] virtio: fix VirtQueue->inuse field

   Fixes to update virtio.c in code paths where it currently becomes
   inconsistent.


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[Qemu-devel] [PATCH 0/4] virtio-balloon: assorted fixes

[Roman Kagan]

This patchset addresses a few problems discovered when analyzing aborts
of (an older version of) QEMU with backported commit
afd9096eb1882f23929f5b5c177898ed231bac66 "virtio: error out if guest
exceeds virtqueue size".  Those problems are present in master, too,
except that they don't trigger an abort and are thus not as easy to
notice.


Roman Kagan (4):
  virtio: assert on ->inuse underflow
  virtio-balloon: make stats virtqueue length 1
  virtio-balloon: don't restart stats timer in callback
  virtio-balloon: keep collecting stats on save/restore

Cc: "Michael S. Tsirkin" 

 hw/virtio/virtio-balloon.c | 49 +-
 hw/virtio/virtio.c |  3 ++-
 include/hw/virtio/virtio-balloon.h |  1 +
 3 files changed, 30 insertions(+), 23 deletions(-)

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2.7.4