linux-kernel - RE: [PATCH] virtio-crypto: adjust priority of algorithm

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Date:   Fri, 13 Jan 2017 09:24:43 +0000
From:   "Gonglei (Arei)" <arei.gonglei@...wei.com>
To:     Christian Borntraeger <borntraeger@...ibm.com>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "mst@...hat.com" <mst@...hat.com>,
        "herbert@...dor.apana.org.au" <herbert@...dor.apana.org.au>
Subject: RE: [PATCH] virtio-crypto: adjust priority of algorithm

>
> From: Christian Borntraeger [mailto:borntraeger@...ibm.com]
> Sent: Friday, January 13, 2017 4:28 PM
> To: Gonglei (Arei); virtualization@...ts.linux-foundation.org;
> linux-crypto@...r.kernel.org; linux-kernel@...r.kernel.org
> Cc: mst@...hat.com; herbert@...dor.apana.org.au
> Subject: Re: [PATCH] virtio-crypto: adjust priority of algorithm
> 
> ACK. Whoever takes this patch might want to fixup 3 typos.
> 
Thanks, I'd better send v2 IMHO.  :)

Regards,
-Gonglei

> On 01/13/2017 07:25 AM, Gonglei wrote:
> 
> > Some hardware accelerators (like intel aseni or the s390
> 					aesni
> > cpacf functions) have lower priorities than virtio
> > crypto, and those drivers are faster than the same in
> > the host via virtio. So let's lower the priority of
> > virtio-crypto's algorithm, make it's higher than sofeware
>                                                    software
> > implimentations but lower than the hardware ones.
>   implementations
> >
> > Suggested-by: Christian Borntraeger <borntraeger@...ibm.com>
> > Signed-off-by: Gonglei <arei.gonglei@...wei.com>
> > ---
> >  drivers/crypto/virtio/virtio_crypto_algs.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/crypto/virtio/virtio_crypto_algs.c
> b/drivers/crypto/virtio/virtio_crypto_algs.c
> > index 6f40a42..4de4740 100644
> > --- a/drivers/crypto/virtio/virtio_crypto_algs.c
> > +++ b/drivers/crypto/virtio/virtio_crypto_algs.c
> > @@ -498,7 +498,7 @@ void virtio_crypto_ablkcipher_finalize_req(
> >  static struct crypto_alg virtio_crypto_algs[] = { {
> >  	.cra_name = "cbc(aes)",
> >  	.cra_driver_name = "virtio_crypto_aes_cbc",
> > -	.cra_priority = 501,
> > +	.cra_priority = 150,
> >  	.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
> >  	.cra_blocksize = AES_BLOCK_SIZE,
> >  	.cra_ctxsize  = sizeof(struct virtio_crypto_ablkcipher_ctx),
> >