From patchwork Mon Oct 19 22:57:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Xu X-Patchwork-Id: 302564 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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 3B64CC433E7 for ; Mon, 19 Oct 2020 22:59:05 +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 AED9C22200 for ; Mon, 19 Oct 2020 22:59:04 +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="WrUp7Uqj" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AED9C22200 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]:41030 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kUe7L-00006g-Qj for qemu-devel@archiver.kernel.org; Mon, 19 Oct 2020 18:59:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37464) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kUe5q-00070P-VJ for qemu-devel@nongnu.org; Mon, 19 Oct 2020 18:57:30 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:54770) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kUe5o-0005cJ-IK for qemu-devel@nongnu.org; Mon, 19 Oct 2020 18:57:30 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603148247; 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=n4IR530G0jn3KaGrAMU+kHWU9guPG9Q80wHEffp3OJw=; b=WrUp7UqjNSJnhPiGza7P0Iv87t/y2LN4l/f22wdWkkvs6jwaKxvTfYa7O2HYDDYYGmH5Eu fKT+CEuaAH2mumYeYIIJhb0WoIhBC0XQSLiHDGv+mTeDXd7f1KeUky6J+Yn0WG+1sdsz8U S0U1nNl3Y7ZwXsYDBF468Wupo9iR4+s= Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-487-_tvVK4qIMt2CMa5Yv7a6hQ-1; Mon, 19 Oct 2020 18:57:25 -0400 X-MC-Unique: _tvVK4qIMt2CMa5Yv7a6hQ-1 Received: by mail-il1-f197.google.com with SMTP id p17so1456595ilj.0 for ; Mon, 19 Oct 2020 15:57:25 -0700 (PDT) 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=n4IR530G0jn3KaGrAMU+kHWU9guPG9Q80wHEffp3OJw=; b=iW2EUcUN5F4UofdWyPy1rCt4jcfCvsdrj8BMwbfLaZcTA6iiupgwWek37qEwcYPm0J GXz3uFfr2CAn8D2Kvu39iuSI44wF3s9OvQJBTXk9vI/Nr5Y9c4/DkqxFW4IC321J2AtQ RmTw5v2jFjSJJLTuzt5ksdkoiTdJVeqTOjY71psxt57JMXX3UP3Qk6XioymrzfrVUDyo p1LS5XuFN0/oerVDtv/bPVKQN674FAmtXKC8RvkH7ktx3JbsfLVXHDFjToOjCEEbTJZ1 PCkoaN/ivFD2eXbFSpy9WyQHmYmjhCMucNj2G4CR0KYEA/xYJqKqb0CqsGrqwt2Cho7F FaXw== X-Gm-Message-State: AOAM533fXHfjQqgGyLiVInWF7qh3AI/bpsjO/S0dL4w6/ZWPuRt5FWcU rey/LP2zW6ZozRjmpAvrFUctQN0m2LIW82CDiKwjpXAFzzqWV4k0DIQYctPxVMzYfSB8aJF8HsJ zmInw3dQ3DQ5rayE= X-Received: by 2002:a5e:d719:: with SMTP id v25mr54997iom.32.1603148244718; Mon, 19 Oct 2020 15:57:24 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxN63MEt+Wcot7AwVcM3Pym62fevDxqfrAUC6UTLm3lhCFpqeNaRvMAGxgrorpA04e/7B+9iQ== X-Received: by 2002:a5e:d719:: with SMTP id v25mr54983iom.32.1603148244536; Mon, 19 Oct 2020 15:57:24 -0700 (PDT) Received: from xz-x1.redhat.com (toroon474qw-lp140-04-174-95-215-133.dsl.bell.ca. [174.95.215.133]) by smtp.gmail.com with ESMTPSA id z89sm6017ilk.4.2020.10.19.15.57.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Oct 2020 15:57:23 -0700 (PDT) From: Peter Xu To: qemu-devel@nongnu.org Subject: [PATCH v5 1/6] migration: Pass incoming state into qemu_ufd_copy_ioctl() Date: Mon, 19 Oct 2020 18:57:15 -0400 Message-Id: <20201019225720.172743-2-peterx@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201019225720.172743-1-peterx@redhat.com> References: <20201019225720.172743-1-peterx@redhat.com> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=peterx@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=peterx@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/19 15:28:27 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: Peter Maydell , Thomas Huth , "Dr . David Alan Gilbert" , peterx@redhat.com, Juan Quintela Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" It'll be used in follow up patches to access more fields out of it. Meanwhile fetch the userfaultfd inside the function. Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Peter Xu --- migration/postcopy-ram.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c index 0a2f88a87d..722034dc01 100644 --- a/migration/postcopy-ram.c +++ b/migration/postcopy-ram.c @@ -1128,10 +1128,12 @@ int postcopy_ram_incoming_setup(MigrationIncomingState *mis) return 0; } -static int qemu_ufd_copy_ioctl(int userfault_fd, void *host_addr, +static int qemu_ufd_copy_ioctl(MigrationIncomingState *mis, void *host_addr, void *from_addr, uint64_t pagesize, RAMBlock *rb) { + int userfault_fd = mis->userfault_fd; int ret; + if (from_addr) { struct uffdio_copy copy_struct; copy_struct.dst = (uint64_t)(uintptr_t)host_addr; @@ -1185,7 +1187,7 @@ int postcopy_place_page(MigrationIncomingState *mis, void *host, void *from, * which would be slightly cheaper, but we'd have to be careful * of the order of updating our page state. */ - if (qemu_ufd_copy_ioctl(mis->userfault_fd, host, from, pagesize, rb)) { + if (qemu_ufd_copy_ioctl(mis, host, from, pagesize, rb)) { int e = errno; error_report("%s: %s copy host: %p from: %p (size: %zd)", __func__, strerror(e), host, from, pagesize); @@ -1212,7 +1214,7 @@ int postcopy_place_page_zero(MigrationIncomingState *mis, void *host, * but it's not available for everything (e.g. hugetlbpages) */ if (qemu_ram_is_uf_zeroable(rb)) { - if (qemu_ufd_copy_ioctl(mis->userfault_fd, host, NULL, pagesize, rb)) { + if (qemu_ufd_copy_ioctl(mis, host, NULL, pagesize, rb)) { int e = errno; error_report("%s: %s zero host: %p", __func__, strerror(e), host);