lkml.org 
[lkml]   [2019]   [Jun]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] crypto: gcm - fix cacheline sharing
On Thu, 6 Jun 2019 at 08:37, Herbert Xu <herbert@gondor.apana.org.au> wrote:
>
> On Thu, May 30, 2019 at 04:31:09PM +0200, Ard Biesheuvel wrote:
> >
> > This might work:
> >
> > diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
> > index c0ece44f303b..3d313d2a279a 100644
> > --- a/drivers/crypto/caam/caamalg.c
> > +++ b/drivers/crypto/caam/caamalg.c
> > @@ -1661,7 +1661,8 @@ static int aead_decrypt(struct aead_request *req)
> > * allocate and map the skcipher extended descriptor for skcipher
> > */
> > static struct skcipher_edesc *skcipher_edesc_alloc(struct
> > skcipher_request *req,
> > - int desc_bytes)
> > + int desc_bytes,
> > + u8 const *input_iv)
> > {
> > struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
> > struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher);
> > @@ -1745,7 +1746,7 @@ static struct skcipher_edesc
> > *skcipher_edesc_alloc(struct skcipher_request *req,
> > /* Make sure IV is located in a DMAable area */
> > if (ivsize) {
> > iv = (u8 *)edesc->hw_desc + desc_bytes + sec4_sg_bytes;
> > - memcpy(iv, req->iv, ivsize);
> > + memcpy(iv, input_iv, ivsize);
> >
> > iv_dma = dma_map_single(jrdev, iv, ivsize, DMA_TO_DEVICE);
> > if (dma_mapping_error(jrdev, iv_dma)) {
>
> Hi Ard:
>
> I presume you will be submitting this patch at some point? When
> you do please base it on top of your other one which I'm about to
> merge.
>

I'm not sure I follow. Do you want a better fix for the CBC output IV
going forward? Or is this about other modes?

\
 
 \ /
  Last update: 2019-06-06 08:43    [W:0.134 / U:25.016 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site