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s=mimecast20190719; t=1706947356; 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=oC7K5HlKFwFUXM44ZBaLeMD9Kdajze8Vum+N13l6px8=; b=SnkVClDl5obvy2FL3tkOW1vj5DE8lXsu2ENOovay/dQhdjMR6b30mRcWA00Fbfd9i/qjX/ e9i1NtnXUWl7FaD88yiFtpryIPPx1RNS/NCPxW6gE1428Ny0h+WRuAqywi8L5RMYFfkbVU pt4sQbIDx/0ayYoE38LiZbTxt1s/AJw= X-MC-Unique: JPPspWEDMGSQo0Urq_316g-1 From: Markus Armbruster To: qemu-devel@nongnu.org Cc: marcandre.lureau@redhat.com, pbonzini@redhat.com, devel@lists.libvirt.org, eblake@redhat.com Subject: [PATCH 1/4] chardev/parallel: Don't close stdin on inappropriate device Date: Sat, 3 Feb 2024 09:02:25 +0100 Message-ID: <20240203080228.2766159-2-armbru@redhat.com> In-Reply-To: <20240203080228.2766159-1-armbru@redhat.com> References: <20240203080228.2766159-1-armbru@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.10 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; Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-2.276, 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_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, 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 @redhat.com) X-ZM-MESSAGEID: 1706947421899100006 Content-Type: text/plain; charset="utf-8" The __linux__ version of qemu_chr_open_pp_fd() tries to claim the parport device with a PPCLAIM ioctl(). On success, it stores the file descriptor in the chardev object, and returns success. On failure, it closes the file descriptor, and returns failure. chardev_new() then passes the Chardev to object_unref(). This duly calls char_parallel_finalize(), which closes the file descriptor stored in the chardev object. Since qemu_chr_open_pp_fd() didn't store it, it's still zero, so this closes standard input. Ooopsie. To demonstate, add a unit test. With the bug above unfixed, running this test closes standard input. char_hotswap_test() happens to run next. It opens a socket, duly gets file descriptor 0, and since it tests for success with > 0 instead of >=3D 0, it fails. The test needs to be conditional exactly like the chardev it tests. Since the condition is rather complicated, steal the solution from the serial chardev: define HAVE_CHARDEV_PARALLEL in qemu/osdep.h. This also permits simplifying chardev/meson.build a bit. The bug fix is easy enough: store the file descriptor, and leave closing it to char_parallel_finalize(). Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake Reviewed-by: Marc-Andr=C3=A9 Lureau --- include/qemu/osdep.h | 9 ++++++++- chardev/char-parallel.c | 7 +++++-- tests/unit/test-char.c | 21 +++++++++++++++++++++ chardev/meson.build | 4 +--- 4 files changed, 35 insertions(+), 6 deletions(-) diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index c9692cc314..3b0f3389d3 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -508,11 +508,18 @@ void qemu_anon_ram_free(void *ptr, size_t size); =20 #ifdef _WIN32 #define HAVE_CHARDEV_SERIAL 1 -#elif defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \ +#define HAVE_CHARDEV_PARALLEL 1 +#else +#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \ || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly_= _) \ || defined(__GLIBC__) || defined(__APPLE__) #define HAVE_CHARDEV_SERIAL 1 #endif +#if defined(__linux__) || defined(__FreeBSD__) \ + || defined(__FreeBSD_kernel__) || defined(__DragonFly__) +#define HAVE_CHARDEV_PARALLEL 1 +#endif +#endif =20 #if defined(__HAIKU__) #define SIGIO SIGPOLL diff --git a/chardev/char-parallel.c b/chardev/char-parallel.c index a5164f975a..78697d7522 100644 --- a/chardev/char-parallel.c +++ b/chardev/char-parallel.c @@ -164,13 +164,13 @@ static void qemu_chr_open_pp_fd(Chardev *chr, { ParallelChardev *drv =3D PARALLEL_CHARDEV(chr); =20 + drv->fd =3D fd; + if (ioctl(fd, PPCLAIM) < 0) { error_setg_errno(errp, errno, "not a parallel port"); - close(fd); return; } =20 - drv->fd =3D fd; drv->mode =3D IEEE1284_MODE_COMPAT; } #endif /* __linux__ */ @@ -238,6 +238,7 @@ static void qemu_chr_open_pp_fd(Chardev *chr, } #endif =20 +#ifdef HAVE_CHARDEV_PARALLEL static void qmp_chardev_open_parallel(Chardev *chr, ChardevBackend *backend, bool *be_opened, @@ -306,3 +307,5 @@ static void register_types(void) } =20 type_init(register_types); + +#endif /* HAVE_CHARDEV_PARALLEL */ diff --git a/tests/unit/test-char.c b/tests/unit/test-char.c index 649fdf64e1..76946e6f90 100644 --- a/tests/unit/test-char.c +++ b/tests/unit/test-char.c @@ -1203,6 +1203,24 @@ static void char_serial_test(void) } #endif =20 +#if defined(HAVE_CHARDEV_PARALLEL) && !defined(WIN32) +static void char_parallel_test(void) +{ + QemuOpts *opts; + Chardev *chr; + + opts =3D qemu_opts_create(qemu_find_opts("chardev"), "parallel-id", + 1, &error_abort); + qemu_opt_set(opts, "backend", "parallel", &error_abort); + qemu_opt_set(opts, "path", "/dev/null", &error_abort); + + chr =3D qemu_chr_new_from_opts(opts, NULL, NULL); + g_assert_null(chr); + + qemu_opts_del(opts); +} +#endif + #ifndef _WIN32 static void char_file_fifo_test(void) { @@ -1544,6 +1562,9 @@ int main(int argc, char **argv) g_test_add_func("/char/udp", char_udp_test); #if defined(HAVE_CHARDEV_SERIAL) && !defined(WIN32) g_test_add_func("/char/serial", char_serial_test); +#endif +#if defined(HAVE_CHARDEV_PARALLEL) && !defined(WIN32) + g_test_add_func("/char/parallel", char_parallel_test); #endif g_test_add_func("/char/hotswap", char_hotswap_test); g_test_add_func("/char/websocket", char_websock_test); diff --git a/chardev/meson.build b/chardev/meson.build index c80337d15f..b39028b7b0 100644 --- a/chardev/meson.build +++ b/chardev/meson.build @@ -21,11 +21,9 @@ if host_os =3D=3D 'windows' else chardev_ss.add(files( 'char-fd.c', + 'char-parallel.c', 'char-pty.c', ), util) - if host_os in ['linux', 'gnu/kfreebsd', 'freebsd', 'dragonfly'] - chardev_ss.add(files('char-parallel.c')) - endif endif =20 chardev_ss =3D chardev_ss.apply({}) --=20 2.43.0 From nobody Thu May 9 03:20:52 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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s=mimecast20190719; t=1706947357; 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=gAhVpQ6CazB2erF7VMaPN47/vqDQtUf1vrvl2TGeyUE=; b=NBzuoX53KokYGvk/iaPbo+KUR1I9xGtVtkRldfw9uKq6YwVN7C4e0JmWDCUxphvJ+Ap2By Vgix0zh4lgYklRT8vvAKyVRn9Qn9W2G4LXgycCmq0SE1uA4kDnRm3T5WEVHYfjEdf2hu72 hFhWDVtC5/QGMnjmuPhvWf24MUAlclE= X-MC-Unique: 6UxLDW5aODS4nAhkwUg7wg-1 From: Markus Armbruster To: qemu-devel@nongnu.org Cc: marcandre.lureau@redhat.com, pbonzini@redhat.com, devel@lists.libvirt.org, eblake@redhat.com Subject: [PATCH 2/4] tests/unit/test-char: Fix qemu_socket(), make_udp_socket() check Date: Sat, 3 Feb 2024 09:02:26 +0100 Message-ID: <20240203080228.2766159-3-armbru@redhat.com> In-Reply-To: <20240203080228.2766159-1-armbru@redhat.com> References: <20240203080228.2766159-1-armbru@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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; Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-2.276, 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_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, 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 @redhat.com) X-ZM-MESSAGEID: 1706947421872100005 Content-Type: text/plain; charset="utf-8" qemu_socket() and make_udp_socket() return a file descriptor on success, -1 on failure. The check misinterprets 0 as failure. Fix that. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake Reviewed-by: Marc-Andr=C3=A9 Lureau --- tests/unit/test-char.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tests/unit/test-char.c b/tests/unit/test-char.c index 76946e6f90..e3b783c06b 100644 --- a/tests/unit/test-char.c +++ b/tests/unit/test-char.c @@ -556,7 +556,7 @@ static int make_udp_socket(int *port) socklen_t alen =3D sizeof(addr); int ret, sock =3D qemu_socket(PF_INET, SOCK_DGRAM, 0); =20 - g_assert_cmpint(sock, >, 0); + g_assert_cmpint(sock, >=3D, 0); addr.sin_family =3D AF_INET ; addr.sin_addr.s_addr =3D htonl(INADDR_ANY); addr.sin_port =3D 0; @@ -1401,7 +1401,7 @@ static void char_hotswap_test(void) =20 int port; int sock =3D make_udp_socket(&port); - g_assert_cmpint(sock, >, 0); + g_assert_cmpint(sock, >=3D, 0); =20 chr_args =3D g_strdup_printf("udp:127.0.0.1:%d", port); =20 --=20 2.43.0 From nobody Thu May 9 03:20:52 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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t=1706947357; 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=xSzUmRyT+qwqIWg/3Aoa3SJhsF3PyTfkmawV/Z8HWCU=; b=h7kmvtB6CU2jhcuZzT2Ows0YxyUvkFjtz6dV3iqi/l7pjEsOBpBKSshFq+CBZ3KGjjrbK/ AMozoXxWAIsKugzKAnu/nWoQJRESNMl543jZYTcPxY+eTj/dSLFFmd09La3fqfn+26nJO+ Dh1i/zfAbuKjUx7BlXtobkLrlgQxSpE= X-MC-Unique: c4-zetiqNESawtyFtvb1GA-1 From: Markus Armbruster To: qemu-devel@nongnu.org Cc: marcandre.lureau@redhat.com, pbonzini@redhat.com, devel@lists.libvirt.org, eblake@redhat.com Subject: [PATCH 3/4] qapi/char: Make backend types properly conditional Date: Sat, 3 Feb 2024 09:02:27 +0100 Message-ID: <20240203080228.2766159-4-armbru@redhat.com> In-Reply-To: <20240203080228.2766159-1-armbru@redhat.com> References: <20240203080228.2766159-1-armbru@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.5 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; Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-2.276, 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_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, 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 @redhat.com) X-ZM-MESSAGEID: 1706947439808100007 Content-Type: text/plain; charset="utf-8" Character backends are actually QOM types. When a backend's compile-time conditional QOM type is not compiled in, creation fails with "'FOO' is not a valid char driver name". Okay, except introspecting chardev-add with query-qmp-schema doesn't work then: the backend type is there even though the QOM type isn't. A management application can work around this issue by using qom-list-types instead. Fix the issue anyway: add the conditionals to the QAPI schema. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake Reviewed-by: Marc-Andr=C3=A9 Lureau --- qapi/char.json | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/qapi/char.json b/qapi/char.json index 6c6ad3b10c..2d74e66746 100644 --- a/qapi/char.json +++ b/qapi/char.json @@ -472,8 +472,8 @@ ## { 'enum': 'ChardevBackendKind', 'data': [ 'file', - 'serial', - 'parallel', + { 'name': 'serial', 'if': 'HAVE_CHARDEV_SERIAL' }, + { 'name': 'parallel', 'if': 'HAVE_CHARDEV_PARALLEL' }, 'pipe', 'socket', 'udp', @@ -482,10 +482,10 @@ 'mux', 'msmouse', 'wctablet', - 'braille', + { 'name': 'braille', 'if': 'CONFIG_BRLAPI' }, 'testdev', 'stdio', - 'console', + { 'name': 'console', 'if': 'CONFIG_WIN32' }, { 'name': 'spicevmc', 'if': 'CONFIG_SPICE' }, { 'name': 'spiceport', 'if': 'CONFIG_SPICE' }, { 'name': 'qemu-vdagent', 'if': 'CONFIG_SPICE_PROTOCOL' }, @@ -614,8 +614,10 @@ 'base': { 'type': 'ChardevBackendKind' }, 'discriminator': 'type', 'data': { 'file': 'ChardevFileWrapper', - 'serial': 'ChardevHostdevWrapper', - 'parallel': 'ChardevHostdevWrapper', + 'serial': { 'type': 'ChardevHostdevWrapper', + 'if': 'HAVE_CHARDEV_SERIAL' }, + 'parallel': { 'type': 'ChardevHostdevWrapper', + 'if': 'HAVE_CHARDEV_PARALLEL' }, 'pipe': 'ChardevHostdevWrapper', 'socket': 'ChardevSocketWrapper', 'udp': 'ChardevUdpWrapper', @@ -624,10 +626,12 @@ 'mux': 'ChardevMuxWrapper', 'msmouse': 'ChardevCommonWrapper', 'wctablet': 'ChardevCommonWrapper', - 'braille': 'ChardevCommonWrapper', + 'braille': { 'type': 'ChardevCommonWrapper', + 'if': 'CONFIG_BRLAPI' }, 'testdev': 'ChardevCommonWrapper', 'stdio': 'ChardevStdioWrapper', - 'console': 'ChardevCommonWrapper', + 'console': { 'type': 'ChardevCommonWrapper', + 'if': 'CONFIG_WIN32' }, 'spicevmc': { 'type': 'ChardevSpiceChannelWrapper', 'if': 'CONFIG_SPICE' }, 'spiceport': { 'type': 'ChardevSpicePortWrapper', --=20 2.43.0 From nobody Thu May 9 03:20:52 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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t=1706947358; 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=/E/JvkeI/fr7kgmUzJT2i57ToPizfNyWV9QJp2tTUAs=; b=X5bsopZD3aXhN3tS/JEUWKbLXi0C1mNCT92K69dVXCwMaOsMzbF9XiuAYTzXAKAOvgMcna CTEgCuFTQ1KbtIKBe8fqn6e5EDdfigrmpL3oOBu95wQrVRJ11f54czRWivWtpA7yjXUcRe bT7qhIc5P1DxM/iUc6a6K2myFfdStpA= X-MC-Unique: FkinZXmvNuSpVN2-z5vRgA-1 From: Markus Armbruster To: qemu-devel@nongnu.org Cc: marcandre.lureau@redhat.com, pbonzini@redhat.com, devel@lists.libvirt.org, eblake@redhat.com Subject: [PATCH 4/4] qapi/char: Deprecate backend type "memory" Date: Sat, 3 Feb 2024 09:02:28 +0100 Message-ID: <20240203080228.2766159-5-armbru@redhat.com> In-Reply-To: <20240203080228.2766159-1-armbru@redhat.com> References: <20240203080228.2766159-1-armbru@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.4 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; Received-SPF: pass client-ip=170.10.129.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-2.276, 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_H2=-0.001, 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 @redhat.com) X-ZM-MESSAGEID: 1706947427993100003 Content-Type: text/plain; charset="utf-8" It's an alias for "ringbuf" we kept for backward compatibility; see commit 3a1da42eb35 (qapi: Rename ChardevBackend member "memory" to "ringbuf"). Deprecation is long overdue. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake Reviewed-by: J=C3=A1n Tomko Reviewed-by: Marc-Andr=C3=A9 Lureau --- docs/about/deprecated.rst | 8 ++++++++ qapi/char.json | 8 +++++--- 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index d4492b9460..ae1a520c26 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -371,6 +371,14 @@ Specifying the iSCSI password in plain text on the com= mand line using the used instead, to refer to a ``--object secret...`` instance that provides a password via a file, or encrypted. =20 +Character device options +'''''''''''''''''''''''' + +Backend ``memory`` (since 9.0) +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +``memory`` is a deprecated synonym for ``ringbuf``. + CPU device properties ''''''''''''''''''''' =20 diff --git a/qapi/char.json b/qapi/char.json index 2d74e66746..75a7e057f0 100644 --- a/qapi/char.json +++ b/qapi/char.json @@ -468,6 +468,10 @@ # # @memory: Since 1.5 # +# Features: +# +# @deprecated: Member @memory is deprecated. Use @ringbuf instead. +# # Since: 1.4 ## { 'enum': 'ChardevBackendKind', @@ -492,8 +496,7 @@ { 'name': 'dbus', 'if': 'CONFIG_DBUS_DISPLAY' }, 'vc', 'ringbuf', - # next one is just for compatibility - 'memory' ] } + { 'name': 'memory', 'features': [ 'deprecated' ] } ] } =20 ## # @ChardevFileWrapper: @@ -642,7 +645,6 @@ 'if': 'CONFIG_DBUS_DISPLAY' }, 'vc': 'ChardevVCWrapper', 'ringbuf': 'ChardevRingbufWrapper', - # next one is just for compatibility 'memory': 'ChardevRingbufWrapper' } } =20 ## --=20 2.43.0