Hi, > > On Mon, Jan 09, 2017 at 01:43:10PM +0000, Stefan Hajnoczi wrote: > > On Mon, Jan 09, 2017 at 03:04:55PM +0800, Longpeng (Mike) wrote: > > > I'm one of Gonglei's virtio-crypto project members, and we plan to add a > AF_ALG > > > backend for virtio-crypto(there's only builtin-backend currently). > > > > > > I found that Catalin, Paolo and Stefan had discussed about this in 2015 > > > (http://www.spinics.net/lists/kvm/msg115457.html), but it seems that > Catalin > > > didn't do it, so I'm confuse about wether it is need to add a AF_ALG > backend. > > > > > > Do you have any suggestion? Thanks :) > > > > I have no objections to an AF_ALG backend in QEMU. > > Rather than do another backend for virtio-crypto, IMHO, we should have > an AF_ALG impl of the crypto/ APIs. That way any potential performance > benefits will enhance our LUKS encryption code too. > According to the currently schemas of crypto/ APIs, we can't choose the specific backend dynamically. This is a limitation for virtio-crypto device I think.
If an AF_ALG backend is supported, we can directly use the hardware accelerators based on LKCF, which makes many sense. Regards, -Gonglei
