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 4BFB7C433B4 for ; Thu, 22 Apr 2021 15:10:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0A76761222 for ; Thu, 22 Apr 2021 15:10:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237440AbhDVPKr (ORCPT ); Thu, 22 Apr 2021 11:10:47 -0400 Received: from mx2.suse.de ([195.135.220.15]:51974 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236397AbhDVPKq (ORCPT ); Thu, 22 Apr 2021 11:10:46 -0400 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= 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) 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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