From: Milan Broz <mbroz@redhat.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: device-mapper development <dm-devel@redhat.com>,
herbert@gondor.hengli.com.au, linux-kernel@vger.kernel.org,
agk@redhat.com, ak@linux.intel.com
Subject: Re: [dm-devel] [PATCH] DM-CRYPT: Scale to multiple CPUs
Date: Mon, 31 May 2010 20:55:50 +0200 [thread overview]
Message-ID: <4C040636.8060702@redhat.com> (raw)
In-Reply-To: <20100531182724.GG10766@basil.fritz.box>
On 05/31/2010 08:27 PM, Andi Kleen wrote:
>>> AES-NI is not asynchronous and doesn't have limited resources.
>>
>> AES-NI used asynchronous crypto interface, was using asynchronous
>> crypto API cryptd daemon IIRC. So this changed?
>
> AFAIK all ciphers use the asynchronous interface, but that
> doesn't mean they are actually asynchronous. AES-NI certainly
> does not require running in a special thread. The only
> thing it doesn't support is running from interrupt context.
I mean how it is implemented now in crypto API, and I was almost
sure that aes-ni acceleration code uses cryptd (iow real asynchronous processing)
and also that not all CPU cores can run these instruction in parallel.
So I am mistaken here?
Milan
next prev parent reply other threads:[~2010-05-31 18:55 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-31 16:04 [PATCH] DM-CRYPT: Scale to multiple CPUs Andi Kleen
2010-05-31 16:04 ` Andi Kleen
2010-05-31 16:34 ` Eric Dumazet
2010-05-31 16:34 ` Eric Dumazet
2010-05-31 17:46 ` Andi Kleen
2010-05-31 17:46 ` Andi Kleen
2010-05-31 17:52 ` Eric Dumazet
2010-05-31 17:52 ` Eric Dumazet
2010-05-31 17:22 ` [dm-devel] " Milan Broz
2010-05-31 17:42 ` Andi Kleen
2010-05-31 18:10 ` Milan Broz
2010-05-31 18:27 ` Andi Kleen
2010-05-31 18:55 ` Milan Broz [this message]
2010-05-31 19:04 ` Andi Kleen
2010-05-31 22:07 ` Herbert Xu
2010-05-31 22:07 ` Herbert Xu
2010-06-01 1:46 ` huang ying
2010-06-01 1:46 ` huang ying
2010-06-01 2:39 ` Mikulas Patocka
2010-06-01 2:44 ` Mikulas Patocka
2010-06-01 4:39 ` Herbert Xu
2010-06-01 4:39 ` Herbert Xu
2010-06-02 5:10 ` Mikulas Patocka
2010-06-02 5:14 ` Herbert Xu
2010-06-02 5:14 ` Herbert Xu
2010-06-02 5:25 ` Mikulas Patocka
2010-06-02 6:07 ` Herbert Xu
2010-06-02 6:07 ` Herbert Xu
2010-06-02 6:30 ` Steffen Klassert
2010-06-02 6:30 ` Steffen Klassert
2010-06-02 7:07 ` Herbert Xu
2010-06-02 7:07 ` Herbert Xu
2010-06-02 7:51 ` Andi Kleen
2010-06-01 6:40 ` Andi Kleen
2010-06-02 5:15 ` Mikulas Patocka
2010-06-02 5:20 ` Herbert Xu
2010-06-02 5:20 ` Herbert Xu
2010-06-02 7:53 ` Andi Kleen
2010-06-02 10:20 ` Herbert Xu
2010-06-02 10:20 ` Herbert Xu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4C040636.8060702@redhat.com \
--to=mbroz@redhat.com \
--cc=agk@redhat.com \
--cc=ak@linux.intel.com \
--cc=andi@firstfloor.org \
--cc=dm-devel@redhat.com \
--cc=herbert@gondor.hengli.com.au \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.