From: David Miller <davem@davemloft.net>
To: jasowang@redhat.com
Cc: mst@redhat.com, kvm@vger.kernel.org,
virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
peterx@redhat.com
Subject: Re: [PATCH net] vhost: correctly check the iova range when waking virtqueue
Date: Sat, 25 Aug 2018 17:40:21 -0700 (PDT) [thread overview]
Message-ID: <20180825.174021.1633894476704616364.davem@davemloft.net> (raw)
In-Reply-To: <20180824085313.21798-1-jasowang@redhat.com>
From: Jason Wang <jasowang@redhat.com>
Date: Fri, 24 Aug 2018 16:53:13 +0800
> We don't wakeup the virtqueue if the first byte of pending iova range
> is the last byte of the range we just got updated. This will lead a
> virtqueue to wait for IOTLB updating forever. Fixing by correct the
> check and wake up the virtqueue in this case.
>
> Fixes: 6b1e6cc7855b ("vhost: new device IOTLB API")
> Reported-by: Peter Xu <peterx@redhat.com>
> Signed-off-by: Jason Wang <jasowang@redhat.com>
> ---
> The patch is needed for -stable.
Applied and queued up for -stable, thanks Jason.
prev parent reply other threads:[~2018-08-26 0:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-24 8:53 [PATCH net] vhost: correctly check the iova range when waking virtqueue Jason Wang
2018-08-24 9:36 ` Peter Xu
2018-08-24 11:02 ` Michael S. Tsirkin
2018-08-26 0:40 ` David Miller [this message]
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