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Wed, 7 Jul 2021 17:27:21 +0000 From: Steve Sistare To: qemu-devel@nongnu.org Subject: [PATCH V5 21/25] chardev: cpr for simple devices Date: Wed, 7 Jul 2021 10:20:30 -0700 Message-Id: <1625678434-240960-22-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1625678434-240960-1-git-send-email-steven.sistare@oracle.com> References: <1625678434-240960-1-git-send-email-steven.sistare@oracle.com> Content-Type: text/plain X-ClientProxiedBy: SJ0PR03CA0104.namprd03.prod.outlook.com (2603:10b6:a03:333::19) To BYAPR10MB3240.namprd10.prod.outlook.com (2603:10b6:a03:155::17) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from ca-dev63.us.oracle.com (148.87.23.13) by SJ0PR03CA0104.namprd03.prod.outlook.com (2603:10b6:a03:333::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4308.21 via Frontend Transport; Wed, 7 Jul 2021 17:27:21 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 23cb49bd-7f07-4e37-ed29-08d9416c7a36 X-MS-TrafficTypeDiagnostic: BY5PR10MB4226: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:281; 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envelope-from=steven.sistare@oracle.com; helo=mx0b-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_LOW=-0.7, 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: "Daniel P. Berrange" , "Michael S. Tsirkin" , Jason Zeng , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Juan Quintela , "Dr. David Alan Gilbert" , Eric Blake , Markus Armbruster , Alex Williamson , Steve Sistare , Stefan Hajnoczi , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Set QEMU_CHAR_FEATURE_CPR for devices that trivially support cpr. char-stdio is slightly less trivial. Allow the gdb server by closing it on exec. Signed-off-by: Steve Sistare --- chardev/char-mux.c | 1 + chardev/char-null.c | 1 + chardev/char-serial.c | 1 + chardev/char-stdio.c | 8 ++++++++ gdbstub.c | 1 + include/chardev/char.h | 1 + migration/cpr.c | 1 + 7 files changed, 14 insertions(+) diff --git a/chardev/char-mux.c b/chardev/char-mux.c index 5baf419..bf7bad9 100644 --- a/chardev/char-mux.c +++ b/chardev/char-mux.c @@ -336,6 +336,7 @@ static void qemu_chr_open_mux(Chardev *chr, */ *be_opened = muxes_opened; qemu_chr_fe_init(&d->chr, drv, errp); + qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_CPR); } static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend, diff --git a/chardev/char-null.c b/chardev/char-null.c index 1c6a290..02acaff 100644 --- a/chardev/char-null.c +++ b/chardev/char-null.c @@ -32,6 +32,7 @@ static void null_chr_open(Chardev *chr, Error **errp) { *be_opened = false; + qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_CPR); } static void char_null_class_init(ObjectClass *oc, void *data) diff --git a/chardev/char-serial.c b/chardev/char-serial.c index 7c3d84a..b585085 100644 --- a/chardev/char-serial.c +++ b/chardev/char-serial.c @@ -274,6 +274,7 @@ static void qmp_chardev_open_serial(Chardev *chr, qemu_set_nonblock(fd); tty_serial_init(fd, 115200, 'N', 8, 1); + qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_CPR); qemu_chr_open_fd(chr, fd, fd); } #endif /* __linux__ || __sun__ */ diff --git a/chardev/char-stdio.c b/chardev/char-stdio.c index 403da30..9410c16 100644 --- a/chardev/char-stdio.c +++ b/chardev/char-stdio.c @@ -114,9 +114,17 @@ static void qemu_chr_open_stdio(Chardev *chr, stdio_allow_signal = !opts->has_signal || opts->signal; qemu_chr_set_echo_stdio(chr, false); + qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_CPR); } #endif +void qemu_term_exit(void) +{ +#ifndef _WIN32 + term_exit(); +#endif +} + static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend, Error **errp) { diff --git a/gdbstub.c b/gdbstub.c index 52bde5b..b014b52 100644 --- a/gdbstub.c +++ b/gdbstub.c @@ -3534,6 +3534,7 @@ int gdbserver_start(const char *device) mon_chr = gdbserver_state.mon_chr; reset_gdbserver_state(); } + mon_chr->close_on_cpr = true; create_processes(&gdbserver_state); diff --git a/include/chardev/char.h b/include/chardev/char.h index e488ad1..96e5570 100644 --- a/include/chardev/char.h +++ b/include/chardev/char.h @@ -295,5 +295,6 @@ void resume_mux_open(void); void qemu_chr_parse_vc(QemuOpts *opts, ChardevBackend *backend, Error **errp); bool qemu_chr_cpr_capable(Error **errp); +void qemu_term_exit(void); #endif diff --git a/migration/cpr.c b/migration/cpr.c index feff97f..4600d8c 100644 --- a/migration/cpr.c +++ b/migration/cpr.c @@ -146,6 +146,7 @@ void cprexec(strList *args, Error **errp) } walkenv(FD_PREFIX, preserve_fd, 0); vhost_dev_reset_all(); + qemu_term_exit(); qemu_system_exec_request(args); } -- 1.8.3.1