From patchwork Mon Jul 20 11:37:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Klaus Jensen X-Patchwork-Id: 277708 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=-12.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 A6C05C433E4 for ; Mon, 20 Jul 2020 11:45:46 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 774F620702 for ; Mon, 20 Jul 2020 11:45:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=irrelevant.dk header.i=@irrelevant.dk header.b="mlLH82CE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 774F620702 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=irrelevant.dk Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:42128 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jxUEr-0001lo-IH for qemu-devel@archiver.kernel.org; Mon, 20 Jul 2020 07:45:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37418) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jxU7l-00082d-E2; Mon, 20 Jul 2020 07:38:25 -0400 Received: from charlie.dont.surf ([128.199.63.193]:46908) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jxU7j-0005BX-My; Mon, 20 Jul 2020 07:38:25 -0400 Received: from apples.local (80-167-98-190-cable.dk.customer.tdc.net [80.167.98.190]) by charlie.dont.surf (Postfix) with ESMTPSA id 7A549BF7BC; Mon, 20 Jul 2020 11:38:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=irrelevant.dk; s=default; t=1595245081; bh=NdHcDEjfx0CpKEm33zR5lsluKrc/d76xJefhFOLOPxs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mlLH82CEwjJ3Q+N4NqG03+EPGBU44CYNHE4zidMGBOBcz5daEN6mjKOjqzCoNI6lQ 7nu/M0llPysVNyzVC7T9IVm5lZDbh7M8ofVc9YKCN8BoWdV18VWQcS4+4eck8Ggppv RhiCNM0gZ+Glv4WtavW4mXBfH6jjHvcH6baruM6jL9HgocURh2Oh09Xpvt4z3D9iZq w1lwhq/9kcHPFEC2DSI8w6e1iqDxqgLg2UrCnVeb7gRp6d9oI49atLL/PyxXkErlvK PrK7yPR4kWBbZy1ypipwlrqSruLfJPmjuHdLeGXyNwyCl83TmSl0zBVUowdINNq5hX NDsDzUYUIYKMw== From: Klaus Jensen To: qemu-devel@nongnu.org Subject: [PATCH 12/16] hw/block/nvme: refactor NvmeRequest clearing Date: Mon, 20 Jul 2020 13:37:44 +0200 Message-Id: <20200720113748.322965-13-its@irrelevant.dk> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200720113748.322965-1-its@irrelevant.dk> References: <20200720113748.322965-1-its@irrelevant.dk> MIME-Version: 1.0 Received-SPF: pass client-ip=128.199.63.193; envelope-from=its@irrelevant.dk; helo=charlie.dont.surf X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/20 07:37:55 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , qemu-block@nongnu.org, Klaus Jensen , Max Reitz , Keith Busch , Klaus Jensen Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Klaus Jensen Move clearing of the structure from "clear before use" to "clear after use". Signed-off-by: Klaus Jensen --- hw/block/nvme.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/hw/block/nvme.c b/hw/block/nvme.c index e2932239c661..431f26c2f589 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -209,6 +209,11 @@ static void nvme_irq_deassert(NvmeCtrl *n, NvmeCQueue *cq) } } +static void nvme_req_clear(NvmeRequest *req) +{ + memset(&req->cqe, 0x0, sizeof(req->cqe)); +} + static uint16_t nvme_map_addr_cmb(NvmeCtrl *n, QEMUIOVector *iov, hwaddr addr, size_t len) { @@ -458,6 +463,7 @@ static void nvme_post_cqes(void *opaque) nvme_inc_cq_tail(cq); pci_dma_write(&n->parent_obj, addr, (void *)&req->cqe, sizeof(req->cqe)); + nvme_req_clear(req); QTAILQ_INSERT_TAIL(&sq->req_list, req, entry); } if (cq->tail != cq->head) { @@ -1601,7 +1607,6 @@ static void nvme_process_sq(void *opaque) req = QTAILQ_FIRST(&sq->req_list); QTAILQ_REMOVE(&sq->req_list, req, entry); QTAILQ_INSERT_TAIL(&sq->out_req_list, req, entry); - memset(&req->cqe, 0, sizeof(req->cqe)); req->cqe.cid = cmd.cid; status = sq->sqid ? nvme_io_cmd(n, &cmd, req) :