linux-kernel - Re: [PATCH 1/2] crypto: talitos - don't persistently map req_ctx->hw_context and req

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Message-ID: <20180309151751.GC13567@gondor.apana.org.au>
Date:   Fri, 9 Mar 2018 23:17:52 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Christophe Leroy <christophe.leroy@....fr>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Horia Geanta <horia.geanta@....com>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH  1/2] crypto: talitos - don't persistently map
 req_ctx->hw_context and req_ctx->buf

On Mon, Feb 26, 2018 at 05:40:04PM +0100, Christophe Leroy wrote:
> Commit 49f9783b0cea ("crypto: talitos - do hw_context DMA mapping
> outside the requests") introduced a persistent dma mapping of
> req_ctx->hw_context
> Commit 37b5e8897eb5 ("crypto: talitos - chain in buffered data for ahash
> on SEC1") introduced a persistent dma mapping of req_ctx->buf
> 
> As there is no destructor for req_ctx (the request context), the
> associated dma handlers where set in ctx (the tfm context). This is
> wrong as several hash operations can run with the same ctx.
> 
> This patch removes this persistent mapping.
> 
> Reported-by: Horia Geanta <horia.geanta@....com>
> Fixes: 49f9783b0cea ("crypto: talitos - do hw_context DMA mapping outside the requests")
> Fixes: 37b5e8897eb5 ("crypto: talitos - chain in buffered data for ahash on SEC1")
> Signed-off-by: Christophe Leroy <christophe.leroy@....fr>

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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