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bh=087pFkDPQX1LVXFotOh4QCXvp5YTxQZVjf2xUD+QFvM=; b=s8QSInhartax+2OgLzD8+SSn07+gd2mLy8q9Uw2VY4N3xFCIL2FvWZ2cdeLfNNhve9fRxg Zf2OyfhM9RDSdU4Img4mUCFu1PLhPOtOa2xUNX+2FZ5wBhE6jIBZBbfFiFAOkuyET/IOV/ pT0OwDm4VyDAYSvi2ILxkZSi6HZdH2w= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1708468959; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=087pFkDPQX1LVXFotOh4QCXvp5YTxQZVjf2xUD+QFvM=; b=clhNsi7360tSL5xPGEVrZDjHQ0V5mBBoMFFGL7EIIbDofNqvN60o6YR6fakTMwg/cCX/xH L2mr7WwTfZkyJ1Aw== From: Fabiano Rosas To: qemu-devel@nongnu.org Cc: berrange@redhat.com, armbru@redhat.com, Peter Xu , Claudio Fontana Subject: [PATCH v4 25/34] migration/multifd: Add fixed-ram support to fd: URI Date: Tue, 20 Feb 2024 19:41:29 -0300 Message-Id: <20240220224138.24759-26-farosas@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20240220224138.24759-1-farosas@suse.de> References: <20240220224138.24759-1-farosas@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spamd-Bar: / Authentication-Results: smtp-out2.suse.de; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a07:de40:b251:101:10:150:64:2; envelope-from=farosas@suse.de; helo=smtp-out2.suse.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @suse.de) X-ZM-MESSAGEID: 1708469031922100001 Content-Type: text/plain; charset="utf-8" If we receive a file descriptor that points to a regular file, there's nothing stopping us from doing multifd migration with fixed-ram to that file. Enable the fd: URI to work with multifd + fixed-ram. Signed-off-by: Fabiano Rosas --- migration/fd.c | 30 ++++++++++++++++++++++++++++++ migration/fd.h | 1 + migration/file.c | 12 +++++++++--- migration/migration.c | 4 ++++ 4 files changed, 44 insertions(+), 3 deletions(-) diff --git a/migration/fd.c b/migration/fd.c index 0eb677dcae..b7e4d071a4 100644 --- a/migration/fd.c +++ b/migration/fd.c @@ -19,14 +19,28 @@ #include "fd.h" #include "migration.h" #include "monitor/monitor.h" +#include "io/channel-file.h" #include "io/channel-util.h" +#include "options.h" #include "trace.h" =20 =20 +static struct FdOutgoingArgs { + int fd; +} outgoing_args; + +int fd_args_get_fd(void) +{ + return outgoing_args.fd; +} + void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Er= ror **errp) { QIOChannel *ioc; int fd =3D monitor_get_fd(monitor_cur(), fdname, errp); + + outgoing_args.fd =3D -1; + if (fd =3D=3D -1) { return; } @@ -38,6 +52,8 @@ void fd_start_outgoing_migration(MigrationState *s, const= char *fdname, Error ** return; } =20 + outgoing_args.fd =3D fd; + qio_channel_set_name(ioc, "migration-fd-outgoing"); migration_channel_connect(s, ioc, NULL, NULL); object_unref(OBJECT(ioc)); @@ -73,4 +89,18 @@ void fd_start_incoming_migration(const char *fdname, Err= or **errp) fd_accept_incoming_migration, NULL, NULL, g_main_context_get_thread_default()); + + if (migrate_multifd()) { + int channels =3D migrate_multifd_channels(); + + while (channels--) { + ioc =3D QIO_CHANNEL(qio_channel_file_new_fd(fd)); + + qio_channel_set_name(ioc, "migration-fd-incoming"); + qio_channel_add_watch_full(ioc, G_IO_IN, + fd_accept_incoming_migration, + NULL, NULL, + g_main_context_get_thread_default()= ); + } + } } diff --git a/migration/fd.h b/migration/fd.h index b901bc014e..1be980c130 100644 --- a/migration/fd.h +++ b/migration/fd.h @@ -20,4 +20,5 @@ void fd_start_incoming_migration(const char *fdname, Erro= r **errp); =20 void fd_start_outgoing_migration(MigrationState *s, const char *fdname, Error **errp); +int fd_args_get_fd(void); #endif diff --git a/migration/file.c b/migration/file.c index 1a18e608fc..27ccfc6a1d 100644 --- a/migration/file.c +++ b/migration/file.c @@ -11,6 +11,7 @@ #include "qemu/error-report.h" #include "qapi/error.h" #include "channel.h" +#include "fd.h" #include "file.h" #include "migration.h" #include "io/channel-file.h" @@ -58,10 +59,15 @@ bool file_send_channel_create(gpointer opaque, Error **= errp) { QIOChannelFile *ioc; int flags =3D O_WRONLY; + int fd =3D fd_args_get_fd(); =20 - ioc =3D qio_channel_file_new_path(outgoing_args.fname, flags, 0, errp); - if (!ioc) { - return false; + if (fd && fd !=3D -1) { + ioc =3D qio_channel_file_new_fd(fd); + } else { + ioc =3D qio_channel_file_new_path(outgoing_args.fname, flags, 0, e= rrp); + if (!ioc) { + return false; + } } =20 if (!multifd_channel_connect(opaque, QIO_CHANNEL(ioc), errp)) { diff --git a/migration/migration.c b/migration/migration.c index 32b291a282..ce7e6f5065 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -134,6 +134,10 @@ static bool transport_supports_multi_channels(Migratio= nAddress *addr) if (addr->transport =3D=3D MIGRATION_ADDRESS_TYPE_SOCKET) { SocketAddress *saddr =3D &addr->u.socket; =20 + if (saddr->type =3D=3D SOCKET_ADDRESS_TYPE_FD) { + return migrate_fixed_ram(); + } + return (saddr->type =3D=3D SOCKET_ADDRESS_TYPE_INET || saddr->type =3D=3D SOCKET_ADDRESS_TYPE_UNIX || saddr->type =3D=3D SOCKET_ADDRESS_TYPE_VSOCK); --=20 2.35.3