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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AA7CDC433EF for ; Tue, 9 Nov 2021 02:31:50 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 5B0CE60E97 for ; Tue, 9 Nov 2021 02:31:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 5B0CE60E97 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 052CE6B007E; Mon, 8 Nov 2021 21:31:50 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 001F26B0080; Mon, 8 Nov 2021 21:31:49 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E81E66B0081; Mon, 8 Nov 2021 21:31:49 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0089.hostedemail.com [216.40.44.89]) by kanga.kvack.org (Postfix) with ESMTP id D5B146B007E for ; Mon, 8 Nov 2021 21:31:49 -0500 (EST) Received: from smtpin19.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 9EC231849B23C for ; Tue, 9 Nov 2021 02:31:49 +0000 (UTC) X-FDA: 78787816212.19.EDC1C69 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf10.hostedemail.com (Postfix) with ESMTP id 72F4E6001E5E for ; Tue, 9 Nov 2021 02:31:26 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id E5F5660E97; Tue, 9 Nov 2021 02:31:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1636425098; bh=Jarfquoe+VZbVOpTbFWVoqXPnenVHo5d3lZ4ew3vCFo=; h=Date:From:To:Subject:In-Reply-To:From; b=N7rjmKQEClTvdz4EKmnXYv2wgqOB17hggy+D3PvPkNCRcF/tNxz23Q5V+skHTHgUc HXI36qpoH20M+xXVtw3jrVYgYwwZYhFUxFWLnjrVLLk+md+3JLclRR7CiBMnWu/uat 2+QN2yJ0TssfA4PWUOAMjEVqTKaDjS9acvY/sbEM= Date: Mon, 08 Nov 2021 18:31:37 -0800 From: Andrew Morton To: akpm@linux-foundation.org, bhe@redhat.com, boris.ostrovsky@oracle.com, bp@alien8.de, david@redhat.com, dyoung@redhat.com, hpa@zytor.com, jasowang@redhat.com, jgross@suse.com, linux-mm@kvack.org, mhocko@suse.com, mingo@redhat.com, mm-commits@vger.kernel.org, mst@redhat.com, osalvador@suse.de, rafael.j.wysocki@intel.com, rppt@kernel.org, sstabellini@kernel.org, tglx@linutronix.de, torvalds@linux-foundation.org, vgoyal@redhat.com Subject: [patch 05/87] x86/xen: simplify xen_oldmem_pfn_is_ram() Message-ID: <20211109023137.MCE6zebe7%akpm@linux-foundation.org> In-Reply-To: <20211108183057.809e428e841088b657a975ec@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 72F4E6001E5E X-Stat-Signature: nyg44wnhp5ttxe76xnroy1h5rrqu7ejh Authentication-Results: imf10.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=N7rjmKQE; dmarc=none; spf=pass (imf10.hostedemail.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org X-HE-Tag: 1636425086-636936 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: David Hildenbrand Subject: x86/xen: simplify xen_oldmem_pfn_is_ram() Let's simplify return handling. Link: https://lkml.kernel.org/r/20211005121430.30136-3-david@redhat.com Signed-off-by: David Hildenbrand Cc: Baoquan He Cc: Borislav Petkov Cc: Boris Ostrovsky Cc: Dave Young Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Jason Wang Cc: Juergen Gross Cc: "Michael S. Tsirkin" Cc: Michal Hocko Cc: Mike Rapoport Cc: Oscar Salvador Cc: "Rafael J. Wysocki" Cc: Stefano Stabellini Cc: Thomas Gleixner Cc: Vivek Goyal Signed-off-by: Andrew Morton --- arch/x86/xen/mmu_hvm.c | 15 +-------------- 1 file changed, 1 insertion(+), 14 deletions(-) --- a/arch/x86/xen/mmu_hvm.c~x86-xen-simplify-xen_oldmem_pfn_is_ram +++ a/arch/x86/xen/mmu_hvm.c @@ -21,23 +21,10 @@ static int xen_oldmem_pfn_is_ram(unsigne .domid = DOMID_SELF, .pfn = pfn, }; - int ram; if (HYPERVISOR_hvm_op(HVMOP_get_mem_type, &a)) return -ENXIO; - - switch (a.mem_type) { - case HVMMEM_mmio_dm: - ram = 0; - break; - case HVMMEM_ram_rw: - case HVMMEM_ram_ro: - default: - ram = 1; - break; - } - - return ram; + return a.mem_type != HVMMEM_mmio_dm; } #endif _