From nobody Mon Feb 9 07:55:34 2026 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 1580912475086886.2224619250719; Wed, 5 Feb 2020 06:21:15 -0800 (PST) Received: from localhost ([::1]:47946 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1izLYH-0006IW-Vl for importer@patchew.org; Wed, 05 Feb 2020 09:21:14 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:46535) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1izLVK-0001V0-IU for qemu-devel@nongnu.org; Wed, 05 Feb 2020 09:18:11 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1izLVJ-0004bh-F3 for qemu-devel@nongnu.org; Wed, 05 Feb 2020 09:18:10 -0500 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:31202 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1izLVJ-0004ZE-6p for qemu-devel@nongnu.org; Wed, 05 Feb 2020 09:18:09 -0500 Received: from mail-qt1-f200.google.com (mail-qt1-f200.google.com [209.85.160.200]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-397-8ivQtaRsMkG4ZUZn0yupCg-1; Wed, 05 Feb 2020 09:18:07 -0500 Received: by mail-qt1-f200.google.com with SMTP id l1so1388735qtp.21 for ; Wed, 05 Feb 2020 06:18:07 -0800 (PST) Received: from xz-x1.redhat.com ([2607:9880:19c8:32::2]) by smtp.gmail.com with ESMTPSA id q5sm12833489qkf.14.2020.02.05.06.18.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Feb 2020 06:18:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1580912288; 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=yE+CLXdD02TVbOQfaDBkHUdhwWAp/SC/thW2yzCYvNk=; b=d+zyoS+onTQ4TY84jNeAW6uYpwrq/yO24tiia9pyyq0k3KUQ+pefArfh1B8IcF4zI0RM1o I3ao8LgFos80EIGtpx7pj/Jx6nKaVnw7R2Wq1gGjqJ4Gg/+QUkJhZFHj6l4idFhp4kOiAO hmqlwrLYGtGA84DxKSW0O6T4n3Dkfuc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=uArLOZV6r+y65XCWsRz0zJYx4XWcyehI0dFRirWsE7g=; b=HVtPuv4iK0BVKhS8776pOT21aw/s6vMTz56Z/psiydMeijyltRVz6y38JMIzBtMhOT ObweQkKuSCf+suYT+gJqRwIRB//N5UhG8rd4w+MWOgHCpky+BZK3JGOfexT8BhrWBgQP R43qFwMMTb2plL9yBRGY/jwf6hlrPtQe0dbzulLSQXVRgG+qTQtHIJXA/KzYjpIKMQFj 7b6Jy2+o0r4WAsn+JdDeGa8Tfo2eaLbMaPGlLgk2jMEeikE9cjcVHkEGTGlc/zSqTEa5 5YmUIt4A8DHIo8VDU+ztcT0ZbAo/ElpkaWfdHaWEOxVRtdPqRmKtwsQRS7NYMvLuvCCy ggPQ== X-Gm-Message-State: APjAAAWM8tPD/nZxw7xEnywcuuGK9zr1UdM1phlpiYq4uQksUX2wnpzt 64GA4fCnmyy8Ul9gql+/w2E2I/e9OXEZjBjJAW5elBqe60iR4viHGNWPOxr8ucUYLVgl6sT70lW B+27z6j4YqCewIbU= X-Received: by 2002:ad4:4f8f:: with SMTP id em15mr31121385qvb.169.1580912286372; Wed, 05 Feb 2020 06:18:06 -0800 (PST) X-Google-Smtp-Source: APXvYqzaB6mRUfa48JlO2cVzQtIGgb1NCVBzRWV4Q7P6Y7qWcch1VE5US1O7KVcwmetKwddH3XeM8A== X-Received: by 2002:ad4:4f8f:: with SMTP id em15mr31121368qvb.169.1580912286191; Wed, 05 Feb 2020 06:18:06 -0800 (PST) From: Peter Xu To: qemu-devel@nongnu.org Subject: [PATCH RFC 7/9] KVM: Cache kvm slot dirty bitmap size Date: Wed, 5 Feb 2020 09:17:47 -0500 Message-Id: <20200205141749.378044-8-peterx@redhat.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200205141749.378044-1-peterx@redhat.com> References: <20200205141749.378044-1-peterx@redhat.com> MIME-Version: 1.0 X-MC-Unique: 8ivQtaRsMkG4ZUZn0yupCg-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] [fuzzy] X-Received-From: 207.211.31.81 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: Paolo Bonzini , "Dr . David Alan Gilbert" , peterx@redhat.com, "Michael S . Tsirkin" 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" Cache it too because we'll reference it more frequently in the future. Signed-off-by: Peter Xu Reviewed-by: Dr. David Alan Gilbert --- accel/kvm/kvm-all.c | 1 + include/sysemu/kvm_int.h | 1 + 2 files changed, 2 insertions(+) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index f81e7a644b..ea7b8f7ca5 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -548,6 +548,7 @@ static void kvm_slot_init_dirty_bitmap(KVMSlot *mem) hwaddr bitmap_size =3D ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), /*HOST_LONG_BITS*/ 64) / 8; mem->dirty_bmap =3D g_malloc0(bitmap_size); + mem->dirty_bmap_size =3D bitmap_size; } =20 /* Sync dirty bitmap from kernel to KVMSlot.dirty_bmap */ diff --git a/include/sysemu/kvm_int.h b/include/sysemu/kvm_int.h index 1a19bfef80..71c9946ecf 100644 --- a/include/sysemu/kvm_int.h +++ b/include/sysemu/kvm_int.h @@ -23,6 +23,7 @@ typedef struct KVMSlot int old_flags; /* Dirty bitmap cache for the slot */ unsigned long *dirty_bmap; + unsigned long dirty_bmap_size; /* Cache of the address space ID */ int as_id; /* Cache of the offset in ram address space */ --=20 2.24.1