From patchwork Wed May 12 18:44:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ard Biesheuvel X-Patchwork-Id: 435785 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10930C43461 for ; Wed, 12 May 2021 21:08:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C72F16023B for ; Wed, 12 May 2021 21:08:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232930AbhELVHk (ORCPT ); Wed, 12 May 2021 17:07:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:56132 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245083AbhELSp6 (ORCPT ); Wed, 12 May 2021 14:45:58 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 24EDD61420; Wed, 12 May 2021 18:44:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1620845085; bh=J6eG/Tivr3/Y2Z/S8213kPBZ77rTUXKnOT9enBbE7Oc=; h=From:To:Cc:Subject:Date:From; b=Ygmd5QSAS7glzvl3luYS7c+2eGEm+XXoD12V2eXIARjQqXChBmu9TPfU/yRnSgxdp MWTF2n3xZhBdN6J4XdcNQtdNA6ykEIfXvzoyyyIsdoIY7mmK2xAhJbbETCigUvcUzK jBFgvc7VHiaKAVKUGLRrWKrxliRTz25ogjS0+kdfNHJ0UYb83fvF8Cq4LOuvyk9pG0 hy8G8YFbOp650HA+2EmV5b8V/7lpCF+ho9H6gQb9ivOebgf/ML8fT9UDipYVQH7xss cbAKWIFKeYx8kD1c5ylvspbgIaOl7kf4gJ7/hx0YM3sqaEfeLZ9wiMkoQF70uuBVU4 IGFNADYUq771g== From: Ard Biesheuvel To: linux-crypto@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, ebiggers@kernel.org, herbert@gondor.apana.org.au, will@kernel.org, kernel-team@android.com, Ard Biesheuvel Subject: [PATCH v3 0/7] running kernel mode SIMD with softirqs disabled Date: Wed, 12 May 2021 20:44:32 +0200 Message-Id: <20210512184439.8778-1-ardb@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org This is a follow-up to [0], but given that the arm64 architectural pieces have been merged for arm64, the only remaining changes are crypto specific. Therefore, the audience has been reduced to those people who are likely to care about these specifics. Patch #1 addresses an issue in the skcipher walker which doesn't handle zero sized AEAD inputs entirely consistently, which is uncovered by the change in patch #7. Patches #2 and #3 add some sanity checks to the public AEAD and skcipher APIs to limit their availibility to either task or softirq context (which is the only way in which they are currently being used). Adding this restriction permits the arm64 crypto code to get rid of all scalar fallbacks, given that on this architecture, softirqs are no longer served while the SIMD unit is being used in kernel mode, which means that the scalar fallbacks are never needed. These are removed in the remaining 4 patches. [0] https://lore.kernel.org/linux-arm-kernel/20210302090118.30666-1-ardb@kernel.org/ Ard Biesheuvel (7): crypto: handle zero sized AEAD inputs correctly crypto: aead - disallow en/decrypt for non-task or non-softirq context crypto: skcipher - disallow en/decrypt for non-task or non-softirq context crypto: arm64/gcm-aes-ce - remove non-SIMD fallback path crypto: arm64/aes-neonbs - stop using SIMD helper for skciphers crypto: arm64/aes-ce - stop using SIMD helper for skciphers crypto: arm64/aes-ccm - remove non-SIMD fallback path arch/arm64/crypto/Kconfig | 6 - arch/arm64/crypto/aes-ce-ccm-core.S | 1 + arch/arm64/crypto/aes-ce-ccm-glue.c | 183 +++++------------ arch/arm64/crypto/aes-glue.c | 102 ++-------- arch/arm64/crypto/aes-neonbs-glue.c | 122 +----------- arch/arm64/crypto/ghash-ce-glue.c | 209 +++++--------------- crypto/aead.c | 10 + crypto/skcipher.c | 12 ++ 8 files changed, 148 insertions(+), 497 deletions(-)