Re: [PATCH net V2 0/4] Fix various issue of vhost

From: Jason Wang
Date: Wed Dec 12 2018 - 21:42:11 EST

On 2018/12/13 äå7:31, David Miller wrote:
From: Jason Wang <jasowang@xxxxxxxxxx>
Date: Wed, 12 Dec 2018 18:08:15 +0800

This series tries to fix various issues of vhost:

- Patch 1 adds a missing write barrier between used idx updating and
- Patch 2-3 brings back the protection of device IOTLB through vq
mutex, this fixes possible use after free in device IOTLB entries.
- Patch 4-7 fixes the diry page logging when device IOTLB is
enabled. We should done through GPA instead of GIOVA, this was done
through intorudce HVA->GPA reverse mapping and convert HVA to GPA
during logging dirty pages.

Please consider them for -stable.


Changes from V1:
- silent compiler warning for 32bit.
- use mutex_trylock() on slowpath instead of mutex_lock() even on fast
Hello Jason.

Look like Michael wants you to split out patch #4 and target
net-next with it.

So please do that and respin the first 3 patches here with Michael's


Yes, will send V3.