From nobody Fri May 3 12:56:56 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass(p=quarantine dis=none) header.from=suse.com ARC-Seal: i=1; a=rsa-sha256; t=1621510999; cv=none; d=zohomail.com; s=zohoarc; b=Zs6jknHBXYa1jJehkElsYAEjTFcRuyesHnUiIeViBqadgoCT05NBx8OLV49hH+6YpNTNbi8gIfPOyAD6OyANz5m+yxRT86qYKtrCMwjUxKSRXrOCmRYlxpis+8ejdtMASGrbjQjcDuc9Xd5PdBfAfwk3EGffjA+XaVcYkBtoNd8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1621510999; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:To; bh=yL3Xk8Mq0X824q1qm2+RtG2tpaaondahQ7Jy4zmuZdM=; b=L0XX0t0MQVJWG+IJTQRaYjY70nGfJs7gm7QBYM2ofj1KaAiLqw+IPUJQONyQ3TCTDOz3bQqtPl5d+PreWpx8agTD7TVRlG+N8kRldOVRzX7G3e2pCxpjyGkRjs1gfySquwfO0+NvI6NudBymL2ueor5lbVtGSv9vfoGNEyuiI0o= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass header.from= (p=quarantine dis=none) header.from= Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1621510999444395.6282728002574; Thu, 20 May 2021 04:43:19 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.130881.244916 (Exim 4.92) (envelope-from ) id 1ljh4f-0007rQ-OG; Thu, 20 May 2021 11:42:45 +0000 Received: by outflank-mailman (output) from mailman id 130881.244916; Thu, 20 May 2021 11:42:45 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1ljh4f-0007rJ-Ks; Thu, 20 May 2021 11:42:45 +0000 Received: by outflank-mailman (input) for mailman id 130881; Thu, 20 May 2021 11:42:44 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1ljh4e-0007rD-AN for xen-devel@lists.xenproject.org; Thu, 20 May 2021 11:42:44 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 83d1b782-5a92-48f1-8209-4acb07cf9712; Thu, 20 May 2021 11:42:43 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id D1F14ABE8; Thu, 20 May 2021 11:42:42 +0000 (UTC) X-Outflank-Mailman: Message body and most headers restored to incoming version 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: 83d1b782-5a92-48f1-8209-4acb07cf9712 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=1621510962; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=yL3Xk8Mq0X824q1qm2+RtG2tpaaondahQ7Jy4zmuZdM=; b=b5UXBNbM6FmAZ2EaTcRCMFAYF48xWTpnQHwepZj7lHl6W/WoWoWp1zoetB8s62+D9p6wxB GZLb+TPa/3N5hAKjMx+XbpqobGGygWsAbCgc5grFjRFeeZDrPnPy0orJFlR0RrGIqO/u7F gfL4PHqaLHl6umi+1I8mY8FAoB6jXZU= To: Juergen Gross , Boris Ostrovsky Cc: "xen-devel@lists.xenproject.org" From: Jan Beulich Subject: [PATCH] x86/Xen: swap NX determination and GDT setup on BSP Message-ID: <12a866b0-9e89-59f7-ebeb-a2a6cec0987a@suse.com> Date: Thu, 20 May 2021 13:42:42 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.10.2 MIME-Version: 1.0 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @suse.com) Content-Type: text/plain; charset="utf-8" xen_setup_gdt(), via xen_load_gdt_boot(), wants to adjust page tables. For this to work when NX is not available, x86_configure_nx() needs to be called first. Reported-by: Olaf Hering Signed-off-by: Jan Beulich Reviewed-by: Juergen Gross --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -1273,16 +1273,16 @@ asmlinkage __visible void __init xen_sta /* Get mfn list */ xen_build_dynamic_phys_to_machine(); =20 + /* Work out if we support NX */ + get_cpu_cap(&boot_cpu_data); + x86_configure_nx(); + /* * Set up kernel GDT and segment registers, mainly so that * -fstack-protector code can be executed. */ xen_setup_gdt(0); =20 - /* Work out if we support NX */ - get_cpu_cap(&boot_cpu_data); - x86_configure_nx(); - /* Determine virtual and physical address sizes */ get_cpu_address_sizes(&boot_cpu_data); =20