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=-6.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS 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 5A027C4BA3B for ; Thu, 27 Feb 2020 10:15:03 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 241FC24670 for ; Thu, 27 Feb 2020 10:15:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="BmeKSSlg" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 241FC24670 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:56580 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j7GC6-00041l-9Z for qemu-devel@archiver.kernel.org; Thu, 27 Feb 2020 05:15:02 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39769) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j7GAg-0002fT-8I for qemu-devel@nongnu.org; Thu, 27 Feb 2020 05:13:35 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j7GAf-0005BX-25 for qemu-devel@nongnu.org; Thu, 27 Feb 2020 05:13:34 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:34589 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 1j7GAe-00059G-Tt for qemu-devel@nongnu.org; Thu, 27 Feb 2020 05:13:32 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1582798412; 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=+sluZhPYprErX++KiZmMUawrspIKQ57T8Kb+R83J2lg=; b=BmeKSSlgkuA0ygxQIzOGQ8WeKoOUG6F6SYot6W3YLnAaKg+rmXJKK4XKPWbhcEd6Z3Iq2b 0LURWXlzWtOmzMwvXAXeuAuk4jX6MaNVTQzJNZQtA2+dzTP4ioamWVQeey0qF4rFSHXIgU vYGKrvR2C7uMgWYlFPvmK325aOk/PDs= 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-310-PoV_jcnWNP-QILhG0TiCvg-1; Thu, 27 Feb 2020 05:13:30 -0500 X-MC-Unique: PoV_jcnWNP-QILhG0TiCvg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A60041005512; Thu, 27 Feb 2020 10:13:29 +0000 (UTC) Received: from t480s.redhat.com (ovpn-116-36.ams2.redhat.com [10.36.116.36]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8F88A9079D; Thu, 27 Feb 2020 10:13:26 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Subject: [PATCH v3 04/15] exec: Factor out setting ram settings (madvise ...) into qemu_ram_apply_settings() Date: Thu, 27 Feb 2020 11:11:54 +0100 Message-Id: <20200227101205.5616-5-david@redhat.com> In-Reply-To: <20200227101205.5616-1-david@redhat.com> References: <20200227101205.5616-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII 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" , Richard Henderson , Igor Kotrasinski , David Hildenbrand , "Dr . David Alan Gilbert" , Peter Xu , Murilo Opsfelder Araujo , Igor Mammedov , Paolo Bonzini , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 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 Reviewed-by: Peter Xu Cc: Richard Henderson Cc: Paolo Bonzini Cc: Igor Mammedov Signed-off-by: David Hildenbrand --- exec.c | 28 ++++++++++++++++------------ 1 file changed, 16 insertions(+), 12 deletions(-) diff --git a/exec.c b/exec.c index 9d351a7492..a0a8d93fee 100644 --- a/exec.c +++ b/exec.c @@ -2069,6 +2069,21 @@ 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 + * Configure it unless the machine is a qtest server, in which case KV= M is + * not used and it may be forked (eg for fuzzing purposes). + */ + if (!qtest_enabled()) { + qemu_madvise(host, length, QEMU_MADV_DONTFORK); + } +} + /* * Resizing RAM while migrating can result in the migration being canceled= . * Care has to be taken if the guest might have already detected the memor= y. @@ -2227,7 +2242,6 @@ 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 @@ -2265,17 +2279,7 @@ 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 - * Configure it unless the machine is a qtest server, in which cas= e - * KVM is not used and it may be forked (eg for fuzzing purposes). - */ - if (!qtest_enabled()) { - qemu_madvise(new_block->host, new_block->max_length, - QEMU_MADV_DONTFORK); - } + qemu_ram_apply_settings(new_block->host, new_block->max_length); ram_block_notify_add(new_block->host, new_block->used_length, new_block->max_length); } --=20 2.24.1