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Tue, 07 Jan 2025 08:57:54 -0800 (PST) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Cc: Mark Cave-Ayland , Beraldo Leal , Ed Maste , Halil Pasic , qemu-ppc@nongnu.org, John Snow , Radoslaw Biernacki , Nicholas Piggin , Markus Armbruster , Leif Lindholm , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Paolo Bonzini , Bin Meng , Daniel Henrique Barboza , Marcel Apfelbaum , qemu-riscv@nongnu.org, Christian Borntraeger , Wainer dos Santos Moschetta , qemu-s390x@nongnu.org, Alistair Francis , Liu Zhiwei , Fabiano Rosas , Weiwei Li , Harsh Prateek Bora , qemu-arm@nongnu.org, Li-Wen Hsu , Palmer Dabbelt , Daniel Henrique Barboza , Richard Henderson , Cleber Rosa , Marcin Juszkiewicz , Peter Maydell , Laurent Vivier , Aurelien Jarno , Eric Farman , Pavel Dovgalyuk , Jiaxun Yang , Thomas Huth , Laurent Vivier , Joel Stanley , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Bernhard Beschow , "Michael S. Tsirkin" Subject: [PATCH v3 17/29] system/qtest: properly feedback results of clock_[step|set] Date: Tue, 7 Jan 2025 16:51:55 +0000 Message-Id: <20250107165208.743958-18-alex.bennee@linaro.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250107165208.743958-1-alex.bennee@linaro.org> References: <20250107165208.743958-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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=2a00:1450:4864:20::331; envelope-from=alex.bennee@linaro.org; helo=mail-wm1-x331.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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 @linaro.org) X-ZM-MESSAGEID: 1736269208454116600 Time will not advance if the system is paused or there are no timer events set for the future. In absence of pending timer events advancing time would make no difference the system state. Attempting to do so would be a bug and the test or device under test would need fixing. Tighten up the result reporting to `FAIL` if time was not advanced. Signed-off-by: Alex Benn=C3=A9e Reviewed-by: Fabiano Rosas Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2687 --- system/qtest.c | 23 ++++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-) diff --git a/system/qtest.c b/system/qtest.c index 99ef2042f6..e68ed0f2a8 100644 --- a/system/qtest.c +++ b/system/qtest.c @@ -78,6 +78,11 @@ static void *qtest_server_send_opaque; * let you adjust the value of the clock (monotonically). All the commands * return the current value of the clock in nanoseconds. * + * If the commands FAIL then time wasn't advanced which is likely + * because the machine was in a paused state or no timer events exist + * in the future. This will cause qtest to abort and the test will + * need to check its assumptions. + * * .. code-block:: none * * > clock_step @@ -710,7 +715,8 @@ static void qtest_process_command(CharBackend *chr, gch= ar **words) qtest_sendf(chr, "OK little\n"); } } else if (qtest_enabled() && strcmp(words[0], "clock_step") =3D=3D 0)= { - int64_t ns; + int64_t old_ns =3D qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); + int64_t ns, new_ns; =20 if (words[1]) { int ret =3D qemu_strtoi64(words[1], NULL, 0, &ns); @@ -719,11 +725,10 @@ static void qtest_process_command(CharBackend *chr, g= char **words) ns =3D qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL, QEMU_TIMER_ATTR_ALL); } - qemu_clock_advance_virtual_time( - qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + ns); + new_ns =3D qemu_clock_advance_virtual_time(old_ns + ns); qtest_send_prefix(chr); - qtest_sendf(chr, "OK %"PRIi64"\n", - (int64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); + qtest_sendf(chr, "%s %"PRIi64"\n", + new_ns > old_ns ? "OK" : "FAIL", new_ns); } else if (strcmp(words[0], "module_load") =3D=3D 0) { Error *local_err =3D NULL; int rv; @@ -740,16 +745,16 @@ static void qtest_process_command(CharBackend *chr, g= char **words) qtest_sendf(chr, "FAIL\n"); } } else if (qtest_enabled() && strcmp(words[0], "clock_set") =3D=3D 0) { - int64_t ns; + int64_t ns, new_ns; int ret; =20 g_assert(words[1]); ret =3D qemu_strtoi64(words[1], NULL, 0, &ns); g_assert(ret =3D=3D 0); - qemu_clock_advance_virtual_time(ns); + new_ns =3D qemu_clock_advance_virtual_time(ns); qtest_send_prefix(chr); - qtest_sendf(chr, "OK %"PRIi64"\n", - (int64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); + qtest_sendf(chr, "%s %"PRIi64"\n", + new_ns =3D=3D ns ? "OK" : "FAIL", new_ns); } else if (process_command_cb && process_command_cb(chr, words)) { /* Command got consumed by the callback handler */ } else { --=20 2.39.5