From nobody Thu Nov 13 14:54:02 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1581515405549427.40313909331746; Wed, 12 Feb 2020 05:50:05 -0800 (PST) Received: from localhost ([::1]:38124 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j1sOy-0000I7-3b for importer@patchew.org; Wed, 12 Feb 2020 08:50:04 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39304) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j1sIl-000753-Hd for qemu-devel@nongnu.org; Wed, 12 Feb 2020 08:43:40 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j1sIk-00044X-Dj for qemu-devel@nongnu.org; Wed, 12 Feb 2020 08:43:39 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:58922 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j1sIk-000447-9u for qemu-devel@nongnu.org; Wed, 12 Feb 2020 08:43:38 -0500 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-56-5VpgLspdNxWtiMZ0y68tQQ-1; Wed, 12 Feb 2020 08:43:34 -0500 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 20B65800D4E; Wed, 12 Feb 2020 13:43:33 +0000 (UTC) Received: from t480s.redhat.com (ovpn-117-92.ams2.redhat.com [10.36.117.92]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3084C1001B08; Wed, 12 Feb 2020 13:43:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1581515017; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zxlDY+iam1eGvrSP9JAuoFgfMKsrZ8lZwfOq1IgFDoE=; b=XMz2kupMbqLyupEc6zIXNc+UBJEXSjpkdUp/ukzeLmdrcXENIBJ+zMoCcNTiUTBJjnqvIV uiGqoSoLb4EjPbdTN+6L2z8bgp5vU3T3JsHBrLehdipEXVWanEc7MoMrZTSM1Fjq3xA2RW o3ySSkNMGX5+8JiLbkpnrQ9jdqctaF4= From: David Hildenbrand To: qemu-devel@nongnu.org Subject: [PATCH v2 fixed 05/16] exec: Factor out setting ram settings (madvise ...) into qemu_ram_apply_settings() Date: Wed, 12 Feb 2020 14:42:43 +0100 Message-Id: <20200212134254.11073-6-david@redhat.com> In-Reply-To: <20200212134254.11073-1-david@redhat.com> References: <20200212134254.11073-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-MC-Unique: 5VpgLspdNxWtiMZ0y68tQQ-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , "Michael S . Tsirkin" , David Hildenbrand , Richard Henderson , "Dr . David Alan Gilbert" , Igor Mammedov , Paolo Bonzini , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Factor all settings out into qemu_ram_apply_settings(). For memory_try_enable_merging(), the important bit is that it won't be called with XEN - which is now still the case as new_block->host will remain NULL. Reviewed-by: Richard Henderson Cc: Richard Henderson Cc: Paolo Bonzini Cc: Igor Mammedov Signed-off-by: David Hildenbrand Reviewed-by: Peter Xu --- exec.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/exec.c b/exec.c index 05cfe868ab..31a462a7d3 100644 --- a/exec.c +++ b/exec.c @@ -2121,6 +2121,15 @@ static int memory_try_enable_merging(void *addr, siz= e_t len) return qemu_madvise(addr, len, QEMU_MADV_MERGEABLE); } =20 +static void qemu_ram_apply_settings(void *host, size_t length) +{ + memory_try_enable_merging(host, length); + qemu_ram_setup_dump(host, length); + qemu_madvise(host, length, QEMU_MADV_HUGEPAGE); + /* MADV_DONTFORK is also needed by KVM in absence of synchronous MMU */ + qemu_madvise(host, length, QEMU_MADV_DONTFORK); +} + /* Only legal before guest might have detected the memory size: e.g. on * incoming migration, or right after reset. * @@ -2271,7 +2280,6 @@ static void ram_block_add(RAMBlock *new_block, Error = **errp, bool shared) qemu_mutex_unlock_ramlist(); return; } - memory_try_enable_merging(new_block->host, new_block->max_leng= th); } } =20 @@ -2309,10 +2317,7 @@ static void ram_block_add(RAMBlock *new_block, Error= **errp, bool shared) DIRTY_CLIENTS_ALL); =20 if (new_block->host) { - qemu_ram_setup_dump(new_block->host, new_block->max_length); - qemu_madvise(new_block->host, new_block->max_length, QEMU_MADV_HUG= EPAGE); - /* MADV_DONTFORK is also needed by KVM in absence of synchronous M= MU */ - qemu_madvise(new_block->host, new_block->max_length, QEMU_MADV_DON= TFORK); + qemu_ram_apply_settings(new_block->host, new_block->max_length); ram_block_notify_add(new_block->host, new_block->max_length); } } --=20 2.24.1