From: Ingo Molnar <mingo@kernel.org>
To: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Eric Biggers <ebiggers3@gmail.com>,
x86@kernel.org, linux-kernel@vger.kernel.org,
Tim Chen <tim.c.chen@linux.intel.com>,
Mathias Krause <minipli@googlemail.com>,
Chandramouli Narayanan <mouli@linux.intel.com>,
Jussi Kivilinna <jussi.kivilinna@iki.fi>,
Peter Zijlstra <peterz@infradead.org>,
Herbert Xu <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
linux-crypto@vger.kernel.org, Eric Biggers <ebiggers@google.com>,
Andy Lutomirski <luto@kernel.org>, Jiri Slaby <jslaby@suse.cz>
Subject: Re: [PATCH 00/12] x86/crypto: Fix RBP usage in several crypto .S files
Date: Fri, 15 Sep 2017 07:37:10 +0200 [thread overview]
Message-ID: <20170915053710.l54tgafyku2bfkbx@gmail.com> (raw)
In-Reply-To: <20170914132805.l6yfpyinw7lgruee@treble>
* Josh Poimboeuf <jpoimboe@redhat.com> wrote:
> > So if this observation of mine is true we could go back to the old code for the
> > hotpath, but use RDI for TBL and not reload it in the hotpath.
>
> Thanks for the excellent breakdown.
>
> When I looked at the patch again, I came to the same conclusion as your
> #4, which is that RDI isn't being used in the inner loops. It *is* used
> in the outermost loop, however.
>
> So v2 of my sha512-avx2-asm.S patch spilled CTX onto the stack, instead
> of TBL:
>
> https://lkml.kernel.org/r/20170913223303.pskmy2v7nto6rvtg@treble
Indeed - I should have checked your v2 patch, but somehow missed it. Would have
saved me some looking+typing ;-)
Thanks,
Ingo
prev parent reply other threads:[~2017-09-15 5:37 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-29 18:05 [PATCH 00/12] x86/crypto: Fix RBP usage in several crypto .S files Josh Poimboeuf
2017-08-29 18:05 ` [PATCH 01/12] x86/crypto: Fix RBP usage in blowfish-x86_64-asm_64.S Josh Poimboeuf
2017-08-29 18:05 ` [PATCH 02/12] x86/crypto: Fix RBP usage in camellia-x86_64-asm_64.S Josh Poimboeuf
2017-08-29 18:05 ` [PATCH 03/12] x86/crypto: Fix RBP usage in cast5-avx-x86_64-asm_64.S Josh Poimboeuf
2017-08-29 18:05 ` [PATCH 04/12] x86/crypto: Fix RBP usage in cast6-avx-x86_64-asm_64.S Josh Poimboeuf
2017-08-29 18:05 ` [PATCH 05/12] x86/crypto: Fix RBP usage in des3_ede-asm_64.S Josh Poimboeuf
2017-08-29 18:05 ` [PATCH 06/12] x86/crypto: Fix RBP usage in sha1_avx2_x86_64_asm.S Josh Poimboeuf
2017-09-06 16:11 ` Tim Chen
2017-08-29 18:05 ` [PATCH 07/12] x86/crypto: Fix RBP usage in sha1_ssse3_asm.S Josh Poimboeuf
2017-08-29 18:05 ` [PATCH 08/12] x86/crypto: Fix RBP usage in sha256-avx-asm.S Josh Poimboeuf
2017-08-29 18:05 ` [PATCH 09/12] x86/crypto: Fix RBP usage in sha256-avx2-asm.S Josh Poimboeuf
2017-08-29 18:05 ` [PATCH 10/12] x86/crypto: Fix RBP usage in sha256-ssse3-asm.S Josh Poimboeuf
2017-08-29 18:05 ` [PATCH 11/12] x86/crypto: Fix RBP usage in sha512-avx2-asm.S Josh Poimboeuf
2017-08-29 18:05 ` [PATCH 12/12] x86/crypto: Fix RBP usage in twofish-avx-x86_64-asm_64.S Josh Poimboeuf
2017-09-02 0:09 ` [PATCH 00/12] x86/crypto: Fix RBP usage in several crypto .S files Eric Biggers
2017-09-07 0:15 ` Josh Poimboeuf
2017-09-07 7:15 ` Ingo Molnar
2017-09-07 17:58 ` Eric Biggers
2017-09-07 21:26 ` Ingo Molnar
2017-09-08 17:57 ` Eric Biggers
2017-09-13 21:24 ` Josh Poimboeuf
2017-09-13 22:33 ` Josh Poimboeuf
2017-09-15 4:54 ` Eric Biggers
2017-09-15 5:34 ` Ingo Molnar
2017-09-15 16:07 ` Eric Biggers
2017-09-15 21:06 ` Ingo Molnar
2017-09-19 3:00 ` Herbert Xu
2017-09-14 9:16 ` Ingo Molnar
2017-09-14 9:28 ` Ingo Molnar
2017-09-14 13:28 ` Josh Poimboeuf
2017-09-15 5:37 ` Ingo Molnar [this message]
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