From nobody Tue Feb 10 04:08:17 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; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1618829148; cv=none; d=zohomail.com; s=zohoarc; b=dN5noOsm9BQWyTtKgD0CUhGC5ALrwAPSup/hR/PpOL4l75APN1bk+IPotXi/CPM6nIrYqtAyuj1BdAtLTlCD0qC02RhAJanV5QNP6wEtH9x2brqaYy3f7RnHomFuntiiIBhzhBJHyFNW+2OXRX6rohXmyGJchVSo7SErPCulbG8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1618829148; 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=6ld8yhgELiR6+rBjlw1gfJIUaZxURFMLk1SWRYyspNY=; b=Sf8VPbn3PalW/VHuegieTWzqBHefIpbcDoWNfw4ob0n3Dvv5F3e0tt7hZX1bQ+e4WC5s75HN02WmJ+uSJqlpj/t9BKsEBoEGgvVWXRJdhyUo8iY5zOMJBAJK4qfBtBhVsRCLxUpICoH4eWJ7VfJRIXdZ6SSgDYLuDeQ/ETj7Eko= 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; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1618829148086383.1415071530148; Mon, 19 Apr 2021 03:45:48 -0700 (PDT) Received: from localhost ([::1]:53094 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lYRPW-0005OA-RH for importer@patchew.org; Mon, 19 Apr 2021 06:45:46 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33264) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lYR4d-0006Is-SO for qemu-devel@nongnu.org; Mon, 19 Apr 2021 06:24:11 -0400 Received: from mga17.intel.com ([192.55.52.151]:24095) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lYR4c-00023F-6n for qemu-devel@nongnu.org; Mon, 19 Apr 2021 06:24:11 -0400 Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Apr 2021 03:23:17 -0700 Received: from icx-2s.bj.intel.com ([10.240.192.119]) by fmsmga008.fm.intel.com with ESMTP; 19 Apr 2021 03:23:15 -0700 IronPort-SDR: p2WlWduuPWOC0PeYBXq86A4BEaLVPb1iRJyRZPtOnPRGlVJREIkBeNIu5GiNkyugq0K1TN/igd TUr8i/iaEd7g== X-IronPort-AV: E=McAfee;i="6200,9189,9958"; a="175409340" X-IronPort-AV: E=Sophos;i="5.82,233,1613462400"; d="scan'208";a="175409340" IronPort-SDR: C8XevKGe8fGCcVNDwPsP+xweYa8eSoFjX4O5o+4V3IptmAnqt/XCurQmqA8Y03UqERWIKLMroK IFOLo5WObapQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,233,1613462400"; d="scan'208";a="419947527" From: Yang Zhong To: qemu-devel@nongnu.org Subject: [PATCH 28/32] bitops: Support 32 and 64 bit mask macro Date: Mon, 19 Apr 2021 18:01:52 +0800 Message-Id: <20210419100156.53504-29-yang.zhong@intel.com> X-Mailer: git-send-email 2.29.2.334.gfaefdd61ec In-Reply-To: <20210419100156.53504-1-yang.zhong@intel.com> References: <20210419100156.53504-1-yang.zhong@intel.com> 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=192.55.52.151; envelope-from=yang.zhong@intel.com; helo=mga17.intel.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-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: yang.zhong@intel.com, pbonzini@redhat.com, kai.huang@intel.com, seanjc@google.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" The Qemu should enable bit mask macro like Linux did in the kernel, the GENMASK(h, l) and GENMASK_ULL(h, l) will set the bit to 1 from l to h bit in the 32 bit or 64 bit long type. Signed-off-by: Yang Zhong --- include/qemu/bitops.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/qemu/bitops.h b/include/qemu/bitops.h index 3acbf3384c..8678c8dcd5 100644 --- a/include/qemu/bitops.h +++ b/include/qemu/bitops.h @@ -18,6 +18,7 @@ =20 #define BITS_PER_BYTE CHAR_BIT #define BITS_PER_LONG (sizeof (unsigned long) * BITS_PER_BYTE) +#define BITS_PER_LONG_LONG 64 =20 #define BIT(nr) (1UL << (nr)) #define BIT_ULL(nr) (1ULL << (nr)) @@ -28,6 +29,12 @@ #define MAKE_64BIT_MASK(shift, length) \ (((~0ULL) >> (64 - (length))) << (shift)) =20 +#define GENMASK(h, l) \ + (((~0UL) << (l)) & (~0UL >> (BITS_PER_LONG - 1 - (h)))) + +#define GENMASK_ULL(h, l) \ + (((~0ULL) << (l)) & (~0ULL >> (BITS_PER_LONG_LONG - 1 - (h)))) + /** * set_bit - Set a bit in memory * @nr: the bit to set --=20 2.29.2.334.gfaefdd61ec