From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
To: Jordan Crouse <jordan.crouse@amd.com>
Cc: linux-crypto@vger.kernel.org, info-linux@ldcmail.amd.com, akpm@osdl.org
Subject: Re: crypto: Add support for the Geode AES engine
Date: Fri, 29 Sep 2006 12:53:51 +0400 [thread overview]
Message-ID: <20060929085351.GA18626@2ka.mipt.ru> (raw)
In-Reply-To: <20060928163115.GL25387@cosmic.amd.com>
On Thu, Sep 28, 2006 at 10:31:15AM -0600, Jordan Crouse (jordan.crouse@amd.com) wrote:
> > As far as I can see, register access is not protected, how can your
> > driver handle the case when dm-crypt and IPsec simultaneously try to
> > encrypt/decrypt some data, it can happen even around
> > preemt_disable/enable calls and actually crypto processing can happen
> > in interrupt context too (although it is not the best thing to do).
>
> I had the mutex in there, but I took it out based on our previous
> conversations, which probably was a little rash. If CRYPTO_TFM_REQ_MAY_SLEEP
> is still a valid flag to check, I could use that along with a spin lock of
> some sort. I'll think about this a bit more.
If it is set, then you can safely sleep there, but if it is not, it does
not always mean that sleeping is forbidden.
--
Evgeniy Polyakov
prev parent reply other threads:[~2006-09-29 8:55 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-27 19:31 [RFC] crypto: Add support for the Geode AES engine Jordan Crouse
2006-09-28 10:23 ` Evgeniy Polyakov
2006-09-28 21:47 ` crypto: Add support for the Geode AES engine (v2) Jordan Crouse
2006-09-28 22:03 ` crypto: Add support for the Geode AES engine (v3) Jordan Crouse
2006-09-28 22:06 ` crypto: Add support for the Geode AES engine (v2) Andrew Morton
[not found] ` <LYRIS-4270-86789-2006.09.28-16.10.32--jordan.crouse#amd.com@whitestar.amd.com>
2006-09-28 23:17 ` crypto: Add support for the Geode AES engine (v4) Jordan Crouse
2006-09-28 23:54 ` Andrew Morton
2006-09-29 0:16 ` Jordan Crouse
2006-10-04 8:52 ` Herbert Xu
[not found] ` <LYRIS-4270-86779-2006.09.28-04.27.47--jordan.crouse#amd.com@whitestar.amd.com>
2006-09-28 16:31 ` crypto: Add support for the Geode AES engine Jordan Crouse
2006-09-29 8:53 ` Evgeniy Polyakov [this message]
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