From: Jason Wang <jasow...@redhat.com> Date: Mon, 10 Dec 2018 17:44:50 +0800
> This series tries to fix various issues of vhost: > > - Patch 1 adds a missing write barrier between used idx updating and > logging. > - 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 fixes the diry page logging when device IOTLB is > enabled. We should done through GPA instead of GIOVA, this was done > through logging through iovec and traversing GPA->HPA list for the > GPA. > > Please consider them for -stable. Looks like the kbuild robot found some problems. ->used is a pointer (which might be 32-bit) and you're casting it to a u64 in the translate_desc() calls of patch #4. Please make sure that you don't actually require the full domain of a u64 in these values, as obviously if vq->used is a pointer you will only get a 32-bit domain on 32-bit architectures.
