ACK: [F][PATCH 0/2] virtio-blk hw queue gets possibly permanently stopped when swiotlb full (LP: 1867109)

Colin Ian King colin.king at canonical.com
Fri Mar 13 17:16:27 UTC 2020


On 13/03/2020 12:31, frank.heimes at canonical.com wrote:
> Buglink: https://bugs.launchpad.net/bugs/1867109
> 
> virtio-blk hardware queue gets possibly permanently stopped when swiotlb is full.
> For example, with a PV guest choose a small swiotlb (30MB) and create IO load on several virtio-blk disks simultaneously.
> It actually should not matter what causes the swiotlb pressure (can be virtio-net as well).
> 
> Halil Pasic (2):
>   From: Halil Pasic <pasic at linux.ibm.com>
>   From: Halil Pasic <pasic at linux.ibm.com>
> 
>  drivers/block/virtio_blk.c | 17 ++++++++++++-----
>  1 file changed, 12 insertions(+), 5 deletions(-)
> 
Both patches are clean upstream cherry picks.

Acked-by: Colin Ian King <colin.king at canonical.com>




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