From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 A7827C433B4 for ; Fri, 30 Apr 2021 06:54:21 +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 15A37613E8 for ; Fri, 30 Apr 2021 06:54:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 15A37613E8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:45110 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lcN2a-0006oU-5p for qemu-devel@archiver.kernel.org; Fri, 30 Apr 2021 02:54:20 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46262) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lcMfO-0006Di-RS for qemu-devel@nongnu.org; Fri, 30 Apr 2021 02:30:25 -0400 Received: from mga11.intel.com ([192.55.52.93]:63439) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lcMfI-00016y-5s for qemu-devel@nongnu.org; Fri, 30 Apr 2021 02:30:22 -0400 IronPort-SDR: cS+xBtmNPWca145GbL+5PcpPdLLu+/c6wm0aNS+rY3BxooGzhvlUAFLZDna89bEdHPjZ1AoKF7 cC/lazZNvhyQ== X-IronPort-AV: E=McAfee;i="6200,9189,9969"; a="194023189" X-IronPort-AV: E=Sophos;i="5.82,260,1613462400"; d="scan'208";a="194023189" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2021 23:29:02 -0700 IronPort-SDR: +bFvauIm8K5Ajf4exfdXm7b0aRDhmwVVxuIj4Zx8U5NRuB1/KQF82a8+c67WpMAtXcyjvLwVg8 4lC+ewpRwGcQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,260,1613462400"; d="scan'208";a="387258659" Received: from icx-2s.bj.intel.com ([10.240.192.119]) by orsmga003.jf.intel.com with ESMTP; 29 Apr 2021 23:29:00 -0700 From: Yang Zhong To: qemu-devel@nongnu.org Subject: [RESEND PATCH 28/32] bitops: Support 32 and 64 bit mask macro Date: Fri, 30 Apr 2021 14:24:51 +0800 Message-Id: <20210430062455.8117-29-yang.zhong@intel.com> X-Mailer: git-send-email 2.29.2.334.gfaefdd61ec In-Reply-To: <20210430062455.8117-1-yang.zhong@intel.com> References: <20210430062455.8117-1-yang.zhong@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=192.55.52.93; envelope-from=yang.zhong@intel.com; helo=mga11.intel.com X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 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 @@ #define BITS_PER_BYTE CHAR_BIT #define BITS_PER_LONG (sizeof (unsigned long) * BITS_PER_BYTE) +#define BITS_PER_LONG_LONG 64 #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)) +#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 -- 2.29.2.334.gfaefdd61ec