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Thu, 07 Sep 2023 04:26:52 -0700 (PDT) From: =?UTF-8?q?Cl=C3=A9ment=20Chigot?= To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, peter.maydell@linaro.org, alistair23@gmail.com, =?UTF-8?q?Cl=C3=A9ment=20Chigot?= Subject: [PATCH v3 1/5] softmmu: add means to pass an exit code when requesting a shutdown Date: Thu, 7 Sep 2023 13:26:36 +0200 Message-Id: <20230907112640.292104-2-chigot@adacore.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230907112640.292104-1-chigot@adacore.com> References: <20230907112640.292104-1-chigot@adacore.com> 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::335; envelope-from=chigot@adacore.com; helo=mail-wm1-x335.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, T_SPF_TEMPERROR=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 @adacore.com) X-ZM-MESSAGEID: 1694086083646100005 As of now, the exit code was either EXIT_FAILURE when a panic shutdown was requested or EXIT_SUCCESS otherwise. However, some hardware could want to pass more complex exit codes. Thus, introduce a new shutdown request function allowing that. Signed-off-by: Cl=C3=A9ment Chigot Reviewed-by: Alistair Francis --- include/sysemu/runstate.h | 2 ++ softmmu/runstate.c | 12 +++++++++++- 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/include/sysemu/runstate.h b/include/sysemu/runstate.h index 7beb29c2e2..1e59e0b12b 100644 --- a/include/sysemu/runstate.h +++ b/include/sysemu/runstate.h @@ -61,6 +61,8 @@ void qemu_system_wakeup_request(WakeupReason reason, Erro= r **errp); void qemu_system_wakeup_enable(WakeupReason reason, bool enabled); void qemu_register_wakeup_notifier(Notifier *notifier); void qemu_register_wakeup_support(void); +void qemu_system_shutdown_request_with_code(ShutdownCause reason, + int exit_code); void qemu_system_shutdown_request(ShutdownCause reason); void qemu_system_powerdown_request(void); void qemu_register_powerdown_notifier(Notifier *notifier); diff --git a/softmmu/runstate.c b/softmmu/runstate.c index f3bd862818..ee27e26048 100644 --- a/softmmu/runstate.c +++ b/softmmu/runstate.c @@ -345,6 +345,7 @@ void vm_state_notify(bool running, RunState state) =20 static ShutdownCause reset_requested; static ShutdownCause shutdown_requested; +static int shutdown_exit_code =3D EXIT_SUCCESS; static int shutdown_signal; static pid_t shutdown_pid; static int powerdown_requested; @@ -624,6 +625,13 @@ void qemu_system_killed(int signal, pid_t pid) qemu_notify_event(); } =20 +void qemu_system_shutdown_request_with_code(ShutdownCause reason, + int exit_code) +{ + shutdown_exit_code =3D exit_code; + qemu_system_shutdown_request(reason); +} + void qemu_system_shutdown_request(ShutdownCause reason) { trace_qemu_system_shutdown_request(reason); @@ -685,7 +693,9 @@ static bool main_loop_should_exit(int *status) if (shutdown_action =3D=3D SHUTDOWN_ACTION_PAUSE) { vm_stop(RUN_STATE_SHUTDOWN); } else { - if (request =3D=3D SHUTDOWN_CAUSE_GUEST_PANIC && + if (shutdown_exit_code !=3D EXIT_SUCCESS) { + *status =3D shutdown_exit_code; + } else if (request =3D=3D SHUTDOWN_CAUSE_GUEST_PANIC && panic_action =3D=3D PANIC_ACTION_EXIT_FAILURE) { *status =3D EXIT_FAILURE; } --=20 2.25.1 From nobody Sun May 19 22:21:24 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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Thu, 07 Sep 2023 04:26:53 -0700 (PDT) From: =?UTF-8?q?Cl=C3=A9ment=20Chigot?= To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, peter.maydell@linaro.org, alistair23@gmail.com, =?UTF-8?q?Cl=C3=A9ment=20Chigot?= Subject: [PATCH v3 2/5] softmmu: pass the main loop status to gdb "Wxx" packet Date: Thu, 7 Sep 2023 13:26:37 +0200 Message-Id: <20230907112640.292104-3-chigot@adacore.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230907112640.292104-1-chigot@adacore.com> References: <20230907112640.292104-1-chigot@adacore.com> 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::434; envelope-from=chigot@adacore.com; helo=mail-wr1-x434.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, T_SPF_TEMPERROR=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 @adacore.com) X-ZM-MESSAGEID: 1694086042048100001 gdb_exit function aims to close gdb sessions and sends the exit code of the current execution. It's being called by qemu_cleanup once the main loop is over. Until now, the exit code sent was always 0. Now that hardware can shutdown this main loop with custom exit codes, these codes must be transfered to gdb as well. Signed-off-by: Cl=C3=A9ment Chigot Reviewed-by: Alistair Francis --- include/sysemu/sysemu.h | 2 +- softmmu/main.c | 2 +- softmmu/runstate.c | 4 ++-- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h index 25be2a692e..73a37949c2 100644 --- a/include/sysemu/sysemu.h +++ b/include/sysemu/sysemu.h @@ -101,7 +101,7 @@ bool defaults_enabled(void); =20 void qemu_init(int argc, char **argv); int qemu_main_loop(void); -void qemu_cleanup(void); +void qemu_cleanup(int); =20 extern QemuOptsList qemu_legacy_drive_opts; extern QemuOptsList qemu_common_drive_opts; diff --git a/softmmu/main.c b/softmmu/main.c index 694388bd7f..9b91d21ea8 100644 --- a/softmmu/main.c +++ b/softmmu/main.c @@ -35,7 +35,7 @@ int qemu_default_main(void) int status; =20 status =3D qemu_main_loop(); - qemu_cleanup(); + qemu_cleanup(status); =20 return status; } diff --git a/softmmu/runstate.c b/softmmu/runstate.c index ee27e26048..d4e2e59e45 100644 --- a/softmmu/runstate.c +++ b/softmmu/runstate.c @@ -794,9 +794,9 @@ void qemu_init_subsystems(void) } =20 =20 -void qemu_cleanup(void) +void qemu_cleanup(int status) { - gdb_exit(0); 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Thu, 07 Sep 2023 04:26:54 -0700 (PDT) From: =?UTF-8?q?Cl=C3=A9ment=20Chigot?= To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, peter.maydell@linaro.org, alistair23@gmail.com, =?UTF-8?q?Cl=C3=A9ment=20Chigot?= Subject: [PATCH v3 3/5] hw/misc/sifive_test.c: replace exit calls with proper shutdown Date: Thu, 7 Sep 2023 13:26:38 +0200 Message-Id: <20230907112640.292104-4-chigot@adacore.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230907112640.292104-1-chigot@adacore.com> References: <20230907112640.292104-1-chigot@adacore.com> 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::433; envelope-from=chigot@adacore.com; helo=mail-wr1-x433.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 @adacore.com) X-ZM-MESSAGEID: 1694086108220100001 This replaces the exit calls by shutdown requests, ensuring a proper cleanup of Qemu. Otherwise, some connections like gdb could be broken before its final packet ("Wxx") is being sent. This part, being done inside qemu_cleanup function, can be reached only when the main loop exits after a shutdown request. Signed-off-by: Cl=C3=A9ment Chigot Reviewed-by: Alistair Francis --- hw/misc/sifive_test.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/hw/misc/sifive_test.c b/hw/misc/sifive_test.c index 56df45bfe5..ad688079c4 100644 --- a/hw/misc/sifive_test.c +++ b/hw/misc/sifive_test.c @@ -25,6 +25,7 @@ #include "qemu/module.h" #include "sysemu/runstate.h" #include "hw/misc/sifive_test.h" +#include "sysemu/sysemu.h" =20 static uint64_t sifive_test_read(void *opaque, hwaddr addr, unsigned int s= ize) { @@ -39,9 +40,13 @@ static void sifive_test_write(void *opaque, hwaddr addr, int code =3D (val64 >> 16) & 0xffff; switch (status) { case FINISHER_FAIL: - exit(code); + qemu_system_shutdown_request_with_code( + SHUTDOWN_CAUSE_GUEST_PANIC, code); + return; case FINISHER_PASS: - exit(0); + qemu_system_shutdown_request_with_code( + SHUTDOWN_CAUSE_GUEST_SHUTDOWN, code); + return; case FINISHER_RESET: qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); return; --=20 2.25.1 From nobody Sun May 19 22:21:24 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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Thu, 07 Sep 2023 04:26:55 -0700 (PDT) From: =?UTF-8?q?Cl=C3=A9ment=20Chigot?= To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, peter.maydell@linaro.org, alistair23@gmail.com, =?UTF-8?q?Cl=C3=A9ment=20Chigot?= Subject: [PATCH v3 4/5] hw/char: riscv_htif: replace exit calls with proper shutdown Date: Thu, 7 Sep 2023 13:26:39 +0200 Message-Id: <20230907112640.292104-5-chigot@adacore.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230907112640.292104-1-chigot@adacore.com> References: <20230907112640.292104-1-chigot@adacore.com> 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::42a; envelope-from=chigot@adacore.com; helo=mail-wr1-x42a.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 @adacore.com) X-ZM-MESSAGEID: 1694086082095100002 This replaces the exit calls by shutdown requests, ensuring a proper cleanup of Qemu. Otherwise, some connections like gdb could be broken before its final packet ("Wxx") is being sent. This part, being done inside qemu_cleanup function, can be reached only when the main loop exits after a shutdown request. Signed-off-by: Cl=C3=A9ment Chigot Reviewed-by: Alistair Francis --- hw/char/riscv_htif.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/hw/char/riscv_htif.c b/hw/char/riscv_htif.c index 37d3ccc76b..7e9b6fcc98 100644 --- a/hw/char/riscv_htif.c +++ b/hw/char/riscv_htif.c @@ -31,6 +31,7 @@ #include "qemu/error-report.h" #include "exec/address-spaces.h" #include "sysemu/dma.h" +#include "sysemu/runstate.h" =20 #define RISCV_DEBUG_HTIF 0 #define HTIF_DEBUG(fmt, ...) = \ @@ -205,7 +206,9 @@ static void htif_handle_tohost_write(HTIFState *s, uint= 64_t val_written) g_free(sig_data); } =20 - exit(exit_code); + qemu_system_shutdown_request_with_code( + SHUTDOWN_CAUSE_GUEST_SHUTDOWN, exit_code); + return; } else { uint64_t syscall[8]; cpu_physical_memory_read(payload, syscall, sizeof(syscall)= ); --=20 2.25.1 From nobody Sun May 19 22:21:24 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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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::430; envelope-from=chigot@adacore.com; helo=mail-wr1-x430.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=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 @adacore.com) X-ZM-MESSAGEID: 1694086091799100007 This replaces the exit calls by shutdown requests, ensuring a proper cleanup of Qemu. Features like net/vhost-vdpa.c are expecting qemu_cleanup to be called to remove their last residuals. Signed-off-by: Cl=C3=A9ment Chigot Reviewed-by: Alistair Francis --- gdbstub/gdbstub.c | 5 +++-- gdbstub/softmmu.c | 6 ++++++ gdbstub/user.c | 6 ++++++ include/gdbstub/syscalls.h | 9 +++++++++ 4 files changed, 24 insertions(+), 2 deletions(-) diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c index 349d348c7b..1cb6d65306 100644 --- a/gdbstub/gdbstub.c +++ b/gdbstub/gdbstub.c @@ -1327,7 +1327,7 @@ static void handle_v_kill(GArray *params, void *user_= ctx) gdb_put_packet("OK"); error_report("QEMU: Terminated via GDBstub"); gdb_exit(0); - exit(0); + gdb_qemu_exit(0); } =20 static const GdbCmdParseEntry gdb_v_commands_table[] =3D { @@ -1846,7 +1846,8 @@ static int gdb_handle_packet(const char *line_buf) /* Kill the target */ error_report("QEMU: Terminated via GDBstub"); gdb_exit(0); - exit(0); + gdb_qemu_exit(0); + break; case 'D': { static const GdbCmdParseEntry detach_cmd_desc =3D { diff --git a/gdbstub/softmmu.c b/gdbstub/softmmu.c index 9f0b8b5497..a5d6e04c79 100644 --- a/gdbstub/softmmu.c +++ b/gdbstub/softmmu.c @@ -435,6 +435,12 @@ void gdb_exit(int code) qemu_chr_fe_deinit(&gdbserver_system_state.chr, true); } =20 +void gdb_qemu_exit(int code) +{ + qemu_system_shutdown_request_with_code(SHUTDOWN_CAUSE_GUEST_SHUTDOWN, + code); +} + /* * Memory access */ diff --git a/gdbstub/user.c b/gdbstub/user.c index 7ab6e5d975..dbe1d9b887 100644 --- a/gdbstub/user.c +++ b/gdbstub/user.c @@ -113,6 +113,12 @@ void gdb_exit(int code) gdb_put_packet(buf); gdbserver_state.allow_stop_reply =3D false; } + +} + +void gdb_qemu_exit(int code) +{ + exit(code); } =20 int gdb_handlesig(CPUState *cpu, int sig) diff --git a/include/gdbstub/syscalls.h b/include/gdbstub/syscalls.h index 243eaf8ce4..54ff7245a1 100644 --- a/include/gdbstub/syscalls.h +++ b/include/gdbstub/syscalls.h @@ -110,4 +110,13 @@ int use_gdb_syscalls(void); */ void gdb_exit(int code); =20 +/** + * gdb_qemu_exit: ask qemu to exit + * @code: exit code reported + * + * This requests qemu to exit. This function is allowed to return as + * the exit request might be processed asynchronously by qemu backend. + */ +void gdb_qemu_exit(int code); + #endif /* _SYSCALLS_H_ */ --=20 2.25.1