From nobody Mon Feb 9 17:37:48 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1594016237; cv=none; d=zohomail.com; s=zohoarc; b=Jux3Ou/HEIiDGuYqf1YfXTIW72PK7dzr40ZHrvV6xD/fz3EKiBAbz5NygwYdvmzoeI9ykx9aJsj+aksXyyd7otW9CbRB/ciM56FV5dYOQnjWfHd/iN6IkqUePX2B6G4kL3nq/KrhGGUVHqXsL6LOxULAlzlda3aSk+1tMuqtMsM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1594016237; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=FSIwWNwSHl5G/0DtO6yKWeLVV/MB4lUsDmvAdcKyh2A=; b=k3Ng/gQ24V7kDJaafnKNy6k2xkAT2lm5jIi5nn5WaXEmZzVX5upwiLx1V1ubLk2qZPcZhIO+Xqkn2y63qSjxvFLFTRUmSfRdv86V5oH6fjRjLTHyoRC4cjvu5a3P3LSkzZv/3TNEOBupMGabyXFvBIvzVZ3MmktxKa2bXXkTc9Q= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1594016237800721.9048019019885; Sun, 5 Jul 2020 23:17:17 -0700 (PDT) Received: from localhost ([::1]:41058 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jsKRI-0006uq-H0 for importer@patchew.org; Mon, 06 Jul 2020 02:17:16 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60750) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jsKNt-0001gg-Em; Mon, 06 Jul 2020 02:13:45 -0400 Received: from charlie.dont.surf ([128.199.63.193]:58130) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jsKNr-0000wT-Ov; Mon, 06 Jul 2020 02:13:45 -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 571A3BF854; Mon, 6 Jul 2020 06:13:16 +0000 (UTC) From: Klaus Jensen To: qemu-block@nongnu.org Subject: [PATCH v3 10/18] hw/block/nvme: flush write cache when disabled Date: Mon, 6 Jul 2020 08:12:55 +0200 Message-Id: <20200706061303.246057-11-its@irrelevant.dk> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200706061303.246057-1-its@irrelevant.dk> References: <20200706061303.246057-1-its@irrelevant.dk> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; 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 = 2020/07/06 02:13:11 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN 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 , Dmitry Fomichev , Klaus Jensen , qemu-devel@nongnu.org, Max Reitz , Klaus Jensen , Keith Busch , Javier Gonzalez , Maxim Levitsky , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Klaus Jensen If the write cache is disabled with a Set Features command, flush it if currently enabled. Signed-off-by: Klaus Jensen Reviewed-by: Dmitry Fomichev Reviewed-by: Maxim Levitsky --- hw/block/nvme.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 80c7285bc1cf..8fce2ebf69e7 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -1166,6 +1166,10 @@ static uint16_t nvme_set_feature(NvmeCtrl *n, NvmeCm= d *cmd, NvmeRequest *req) =20 break; case NVME_VOLATILE_WRITE_CACHE: + if (!(dw11 & 0x1) && blk_enable_write_cache(n->conf.blk)) { + blk_flush(n->conf.blk); + } + blk_set_enable_write_cache(n->conf.blk, dw11 & 1); break; case NVME_NUMBER_OF_QUEUES: --=20 2.27.0