From nobody Fri Apr 26 00:22:12 2024 Delivered-To: importer@patchew.org Received-SPF: none (zoho.com: 192.237.175.120 is neither permitted nor denied by domain of lists.xenproject.org) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; spf=none (zoho.com: 192.237.175.120 is neither permitted nor denied by domain of lists.xenproject.org) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org ARC-Seal: i=1; a=rsa-sha256; t=1557836768; cv=none; d=zoho.com; s=zohoarc; b=EkD/btI5PMWUraI7wNWHbObxZCAbKuDLqBzxmtFq5//K8hQPq4y7wfsTM6A80gC4RDeGIW2ppukiGdR0C+NgDbNDLKlpBbkUW3tXDxga7NcWNxTrD8xD2R3YYn6AXF7Te7/uT8nV93F5yg+tMqUqycWi/L4UcVfM7mCKOy6rRhc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1557836768; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=0IYOeOo+2lNCD8Y0PLPTB6wZUjE3dFZyctv6YK1o+8g=; b=Y8PoBPjtChd9pHgdt9AE5791Y5TUz/rZ1Z4h1UJ7hQqSabttIlD/okSZUgMPtGV+TccQjFV06NBGBDr8fyVvr9ndLbNRgsXKJFR33EhMPNuNCDG2+rVkL/QwMxvxBSzKhnTzjQ6uA48/R6ougJMDbISQkwy+YY/4TM/qV3+KYiE= ARC-Authentication-Results: i=1; mx.zoho.com; spf=none (zoho.com: 192.237.175.120 is neither permitted nor denied by domain of lists.xenproject.org) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1557836768355522.5852041601518; Tue, 14 May 2019 05:26:08 -0700 (PDT) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hQWUn-0002rr-K3; Tue, 14 May 2019 12:25:25 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hQWUm-0002pk-9m for xen-devel@lists.xenproject.org; Tue, 14 May 2019 12:25:24 +0000 Received: from foss.arm.com (unknown [217.140.101.70]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTP id 589e5fd1-7643-11e9-8980-bc764e045a96; Tue, 14 May 2019 12:25:23 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3897A15AD; Tue, 14 May 2019 05:25:23 -0700 (PDT) Received: from e108454-lin.cambridge.arm.com (e108454-lin.cambridge.arm.com [10.1.196.50]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 057143F71E; Tue, 14 May 2019 05:25:21 -0700 (PDT) X-Inumbo-ID: 589e5fd1-7643-11e9-8980-bc764e045a96 From: Julien Grall To: xen-devel@lists.xenproject.org Date: Tue, 14 May 2019 13:24:51 +0100 Message-Id: <20190514122456.28559-15-julien.grall@arm.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190514122456.28559-1-julien.grall@arm.com> References: <20190514122456.28559-1-julien.grall@arm.com> Subject: [Xen-devel] [PATCH MM-PART2 RESEND v2 14/19] xen/arm32: mm: Avoid cleaning the cache for secondary CPUs page-tables X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Oleksandr_Tyshchenko@epam.com, Julien Grall , Stefano Stabellini , Andrii Anisov MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" The page-table walker is configured to use the same shareability and cacheability as the access performed when updating the page-tables. This means cleaning the cache for secondary CPUs runtime page-tables is unnecessary. Signed-off-by: Julien Grall Reviewed-by: Andrii Anisov --- Changes in v2: - Add Andrii's reviewed-by --- xen/arch/arm/mm.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c index cda2847d00..6db7dda0da 100644 --- a/xen/arch/arm/mm.c +++ b/xen/arch/arm/mm.c @@ -769,9 +769,6 @@ int init_secondary_pagetables(int cpu) write_pte(&first[first_table_offset(DOMHEAP_VIRT_START+i*FIRST_SIZ= E)], pte); } =20 - clean_dcache_va_range(first, PAGE_SIZE); - clean_dcache_va_range(domheap, DOMHEAP_SECOND_PAGES*PAGE_SIZE); - per_cpu(xen_pgtable, cpu) =3D first; per_cpu(xen_dommap, cpu) =3D domheap; =20 --=20 2.11.0 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel