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=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,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 7574FC433B4 for ; Thu, 22 Apr 2021 15:10:27 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 23B0561222 for ; Thu, 22 Apr 2021 15:10:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 23B0561222 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.115608.220599 (Exim 4.92) (envelope-from ) id 1lZay6-0000X4-0R; Thu, 22 Apr 2021 15:10:14 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 115608.220599; Thu, 22 Apr 2021 15:10:13 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lZay5-0000Wx-TV; Thu, 22 Apr 2021 15:10:13 +0000 Received: by outflank-mailman (input) for mailman id 115608; Thu, 22 Apr 2021 15:10:12 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lZay4-0000Wn-Nu for xen-devel@lists.xenproject.org; Thu, 22 Apr 2021 15:10:12 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 73b6b491-ba8a-477a-93b7-e9f66a8884b2; Thu, 22 Apr 2021 15:10:11 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id C4992B16C; Thu, 22 Apr 2021 15:10:10 +0000 (UTC) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 73b6b491-ba8a-477a-93b7-e9f66a8884b2 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1619104210; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=DE3ajipCLGOoeJxse+uDWjYBYGnyKVCVQDv9OtWAWVI=; b=YlnwiUJh4StAZX+XIutv314AStIgqEqhikMDiBZkbNqgG1wcxmZslPpvM3mPjQUuOyZq7e 8ozA0Mrkd+QJ0dJrUEi99VaukzQmizcyv+cZxSv4fcLOcPbKJLDYF8wXH2UNengKHDlTaR iJusQ+0aBJtbRK3RqPELQGNfl41Fisc= From: Juergen Gross To: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, x86@kernel.org Cc: Juergen Gross , Boris Ostrovsky , Stefano Stabellini , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Peter Zijlstra Subject: [PATCH 0/3] xen: remove some checks for always present Xen features Date: Thu, 22 Apr 2021 17:10:04 +0200 Message-Id: <20210422151007.2205-1-jgross@suse.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Some features of Xen can be assumed to be always present, so add a central check to verify this being true and remove the other checks. Juergen Gross (3): xen: check required Xen features xen: assume XENFEAT_mmu_pt_update_preserve_ad being set for pv guests xen: assume XENFEAT_gnttab_map_avail_bits being set for pv guests arch/x86/xen/enlighten_pv.c | 12 ++---------- arch/x86/xen/mmu_pv.c | 4 ++-- drivers/xen/features.c | 18 ++++++++++++++++++ drivers/xen/gntdev.c | 36 ++---------------------------------- 4 files changed, 24 insertions(+), 46 deletions(-) -- 2.26.2