> -----Original Message----- > From: Jiang, Cheng1 <[email protected]> > Sent: Thursday, July 8, 2021 6:25 PM > To: [email protected]; Xia, Chenbo <[email protected]> > Cc: [email protected]; Hu, Jiayu <[email protected]>; Yang, YvonneX > <[email protected]>; Jiang, Cheng1 <[email protected]>; > [email protected] > Subject: [PATCH] vhost: fix async packed ring batch datapath > > We assume that in the sync path, if there is no buffer wrap in the > avail descriptors fetched in a batch, there is no buffer wrap in the > used descriptors which need to be written back in this batch, but > this assumption is wrong in the async path since there are inflight > descriptors which are processed by the DMA device. > > This patch refactors the batch copy code and adds used ring buffer > wrap check as a batch copy condition to fix this issue. > > Fixes: 873e8dad6f49 ("vhost: support packed ring in async datapath") > Cc: [email protected] > > Signed-off-by: Cheng Jiang <[email protected]> > --- > -- > 2.29.2
Applied to next-virtio/main, thanks.
