From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f54.google.com (mail-wm1-f54.google.com [209.85.128.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 083754AA2 for ; Thu, 17 Mar 2022 20:56:20 +0000 (UTC) Received: by mail-wm1-f54.google.com with SMTP id bg31-20020a05600c3c9f00b00381590dbb33so3804210wmb.3 for ; Thu, 17 Mar 2022 13:56:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=XtchaM94YM1VegqN4dLecw9vdPFGdK2+AK0IlUyWGNM=; b=JN6BCT/TB8P/cEYVkNRv0NhaugkXmtIe5kGi2WExIn1h+G6U+AJ32Ez9/RCgHRmLDp M5MJzJF1yDdVggt8Rtc2aZMhnJUNBTAVxK4oxU/7RmJz05sp3tZvnC1turEOgiQND5/r raLEo3avhyafqd38eMMEchgMaR5rAMvHjDgxtVR6VFtwQHDimutOS19Uba4PF+fHs43L jke6YmhRH3t6gRfVks5PXcu1eJmUkHdowWOlxMBo3s9PAdjmfml0r+vjGhQUyvfU+dK7 O+weVl89dQCQjMjLevV2YMXaK5qeEzZAtx99qziy3hEKAtduHcHlsqp7NU2fFW/IAqXN 8oNA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=XtchaM94YM1VegqN4dLecw9vdPFGdK2+AK0IlUyWGNM=; b=zGnzmwIi5lY/cq0SsRqRSrVeBq1ls1seinAjLWLKnSEVm7Xnj4i0P//XKkNMOac0+Q AePA3QYEDJtT9BBMFgXmegfp7RElrdFOsvyWTFdB0t9pmwh1HVZhft+fzQD+0TGWwHyc hQs7wWGDbZLr5JKKbu80wIBIt7pIYVb+/miDsFIMa/Qh/IvpFRY5TH1i1F+/hqp7WP69 MoKOt2CUcfMfPpAXYvK9wFVNq01F8D/oa+nA5AHYFWlJzfzpqQ2JPlvwtdfEYVfkac96 kBSSfejEIZKdP/O3V+LD4mR+19GopTgTN2BUi2pCXXJwwfawy/L431+q+O7h9WzW/wEm mBhA== X-Gm-Message-State: AOAM530E9fLB6fNEB2pZ8KtEOMOkDAVRnQIsH+WnSUA8ba3XzbvMv74a GFrAl143KKdgPQrpzW9Q47z/ZQ== X-Google-Smtp-Source: ABdhPJzf9ed7YPOo1pNtfYfn4ilwHvwd9wFs/snO9PWNIXdQ873daopcr6dF4eMoUCC6IGWn/3++cw== X-Received: by 2002:a1c:f719:0:b0:381:ba:5247 with SMTP id v25-20020a1cf719000000b0038100ba5247mr5731291wmh.183.1647550578428; Thu, 17 Mar 2022 13:56:18 -0700 (PDT) Received: from localhost.localdomain (laubervilliers-658-1-213-31.w90-63.abo.wanadoo.fr. [90.63.244.31]) by smtp.googlemail.com with ESMTPSA id r4-20020a05600c35c400b00389f368cf1esm3695424wmq.40.2022.03.17.13.56.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Mar 2022 13:56:18 -0700 (PDT) From: Corentin Labbe To: herbert@gondor.apana.org.au, jernej.skrabec@gmail.com, samuel@sholland.org, wens@csie.org Cc: linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev, Corentin Labbe Subject: [PATCH 10/19] crypto: sun8i-ss: do not zeroize all pad Date: Thu, 17 Mar 2022 20:55:56 +0000 Message-Id: <20220317205605.3924836-11-clabbe@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220317205605.3924836-1-clabbe@baylibre.com> References: <20220317205605.3924836-1-clabbe@baylibre.com> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Instead of memset all pad buffer, it is faster to only put 0 where needed. Signed-off-by: Corentin Labbe --- drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c index 9582ac450d08..53e5bfb99c93 100644 --- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c @@ -319,7 +319,7 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq) unsigned int len; u64 fill, min_fill, byte_count; void *pad, *result; - int j, i, todo; + int j, i, k, todo; __be64 *bebits; __le64 *lebits; dma_addr_t addr_res, addr_pad; @@ -334,7 +334,6 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq) result = ss->flows[rctx->flow].result; pad = ss->flows[rctx->flow].pad; - memset(pad, 0, algt->alg.hash.halg.base.cra_blocksize * 2); bf = (__le32 *)pad; for (i = 0; i < MAX_SG; i++) { @@ -395,7 +394,10 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq) if (fill < min_fill) fill += 64; + k = j; j += (fill - min_fill) / sizeof(u32); + for (; k < j; k++) + bf[k] = 0; switch (algt->ss_algo_id) { case SS_ID_HASH_MD5: -- 2.34.1