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Tue, 23 Feb 2021 09:50:05 -0500 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-327-_HUPCavUN4yQiU-5CmmYXw-1; Tue, 23 Feb 2021 09:49:53 -0500 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6A9CC806675; Tue, 23 Feb 2021 14:48:21 +0000 (UTC) Received: from localhost (ovpn-114-203.ams2.redhat.com [10.36.114.203]) by smtp.corp.redhat.com (Postfix) with ESMTP id CE54A1002391; Tue, 23 Feb 2021 14:48:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1614091803; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=upKVBedJ0skPxF7fKkioEt6tKB9mTkPoP7mf5Bog2JA=; b=eHMmDZDKM1xFHTqsZN0YXKSovvGGWH3Q2DFsYsg9jT/4a9V1EVMKpaqnljHy0Rlw5xd2Ti Mb8w8z6g04DX/cKHlnueSwSMENUVukgP8lzrTLJQKTZx1S7j669nnU7cB7/uiP7BQOGswn FHwJ6DH9zBqN1UUaHEnLRlB8kddcZHY= X-MC-Unique: _HUPCavUN4yQiU-5CmmYXw-1 From: Stefan Hajnoczi To: qemu-devel@nongnu.org Subject: [PATCH v3 08/12] block/export: use VIRTIO_BLK_SECTOR_BITS Date: Tue, 23 Feb 2021 14:46:49 +0000 Message-Id: <20210223144653.811468-9-stefanha@redhat.com> In-Reply-To: <20210223144653.811468-1-stefanha@redhat.com> References: <20210223144653.811468-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=stefanha@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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=216.205.24.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MIME_BASE64_TEXT=1.741, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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 , Laurent Vivier , Thomas Huth , qemu-block@nongnu.org, "Michael S. Tsirkin" , Peter Maydell , Coiby Xu , Max Reitz , Stefan Hajnoczi , Paolo Bonzini , Raphael Norwitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Use VIRTIO_BLK_SECTOR_BITS and VIRTIO_BLK_SECTOR_SIZE when dealing with virtio-blk sector numbers. Although the values happen to be the same as BDRV_SECTOR_BITS and BDRV_SECTOR_SIZE, they are conceptually different. This makes it clearer when we are dealing with virtio-blk sector units. Use VIRTIO_BLK_SECTOR_BITS in vu_blk_initialize_config(). Later patches will use it the new constants the virtqueue request processing code path. Suggested-by: Max Reitz Signed-off-by: Stefan Hajnoczi --- block/export/vhost-user-blk-server.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/block/export/vhost-user-blk-server.c b/block/export/vhost-user= -blk-server.c index 7aea132f69..2614a63791 100644 --- a/block/export/vhost-user-blk-server.c +++ b/block/export/vhost-user-blk-server.c @@ -20,6 +20,13 @@ #include "sysemu/block-backend.h" #include "util/block-helpers.h" =20 +/* + * Sector units are 512 bytes regardless of the + * virtio_blk_config->blk_size value. + */ +#define VIRTIO_BLK_SECTOR_BITS 9 +#define VIRTIO_BLK_SECTOR_SIZE (1ull << VIRTIO_BLK_SECTOR_BITS) + enum { VHOST_USER_BLK_NUM_QUEUES_DEFAULT =3D 1, }; @@ -347,7 +354,8 @@ vu_blk_initialize_config(BlockDriverState *bs, uint32_t blk_size, uint16_t num_queues) { - config->capacity =3D cpu_to_le64(bdrv_getlength(bs) >> BDRV_SECTOR_BIT= S); + config->capacity =3D + cpu_to_le64(bdrv_getlength(bs) >> VIRTIO_BLK_SECTOR_BITS); config->blk_size =3D cpu_to_le32(blk_size); config->size_max =3D cpu_to_le32(0); config->seg_max =3D cpu_to_le32(128 - 2); @@ -356,7 +364,8 @@ vu_blk_initialize_config(BlockDriverState *bs, config->num_queues =3D cpu_to_le16(num_queues); config->max_discard_sectors =3D cpu_to_le32(32768); config->max_discard_seg =3D cpu_to_le32(1); - config->discard_sector_alignment =3D cpu_to_le32(blk_size >> 9); + config->discard_sector_alignment =3D + cpu_to_le32(blk_size >> VIRTIO_BLK_SECTOR_BITS); config->max_write_zeroes_sectors =3D cpu_to_le32(32768); config->max_write_zeroes_seg =3D cpu_to_le32(1); } @@ -383,7 +392,7 @@ static int vu_blk_exp_create(BlockExport *exp, BlockExp= ortOptions *opts, if (vu_opts->has_logical_block_size) { logical_block_size =3D vu_opts->logical_block_size; } else { - logical_block_size =3D BDRV_SECTOR_SIZE; + logical_block_size =3D VIRTIO_BLK_SECTOR_SIZE; } check_block_size(exp->id, "logical-block-size", logical_block_size, &local_err); --=20 2.29.2