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Mon, 26 Feb 2024 00:30:05 -0800 (PST) From: Nicholas Piggin To: qemu-devel@nongnu.org Cc: Nicholas Piggin , Pavel Dovgalyuk , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Richard Henderson , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Paolo Bonzini , John Snow , Cleber Rosa , Wainer dos Santos Moschetta , Beraldo Leal Subject: [PATCH v3 1/9] scripts/replay-dump.py: Update to current rr record format Date: Mon, 26 Feb 2024 18:29:37 +1000 Message-ID: <20240226082945.1452499-2-npiggin@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20240226082945.1452499-1-npiggin@gmail.com> References: <20240226082945.1452499-1-npiggin@gmail.com> MIME-Version: 1.0 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=2607:f8b0:4864:20::62d; envelope-from=npiggin@gmail.com; helo=mail-pl1-x62d.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 @gmail.com) X-ZM-MESSAGEID: 1708936217202100003 Content-Type: text/plain; charset="utf-8" The v12 format support for replay-dump has a few issues still. This fixes async decoding; adds event, shutdown, and end decoding; fixes audio in / out events, fixes checkpoint checking of following async events. Signed-off-by: Nicholas Piggin Reviewed-by: Alex Benn=C3=A9e --- scripts/replay-dump.py | 127 ++++++++++++++++++++++++++++++----------- 1 file changed, 93 insertions(+), 34 deletions(-) diff --git a/scripts/replay-dump.py b/scripts/replay-dump.py index d668193e79..419ee3257b 100755 --- a/scripts/replay-dump.py +++ b/scripts/replay-dump.py @@ -20,6 +20,7 @@ =20 import argparse import struct +import os from collections import namedtuple from os import path =20 @@ -134,6 +135,17 @@ def swallow_async_qword(eid, name, dumpfile): print(" %s(%d) @ %d" % (name, eid, step_id)) return True =20 +def swallow_bytes(eid, name, dumpfile, nr): + """Swallow nr bytes of data without looking at it""" + dumpfile.seek(nr, os.SEEK_CUR) + +def decode_exception(eid, name, dumpfile): + print_event(eid, name) + return True + +# v12 does away with the additional event byte and encodes it in the main = type +# Between v8 and v9, REPLAY_ASYNC_BH_ONESHOT was added, but we don't decode +# those versions so leave it out. async_decode_table =3D [ Decoder(0, "REPLAY_ASYNC_EVENT_BH", swallow_async= _qword), Decoder(1, "REPLAY_ASYNC_INPUT", decode_unimp), Decoder(2, "REPLAY_ASYNC_INPUT_SYNC", decode_unimp), @@ -142,8 +154,8 @@ def swallow_async_qword(eid, name, dumpfile): Decoder(5, "REPLAY_ASYNC_EVENT_NET", decode_unimp), ] # See replay_read_events/replay_read_event -def decode_async(eid, name, dumpfile): - """Decode an ASYNC event""" +def decode_async_old(eid, name, dumpfile): + """Decode an ASYNC event (pre-v8)""" =20 print_event(eid, name) =20 @@ -157,6 +169,35 @@ def decode_async(eid, name, dumpfile): =20 return call_decode(async_decode_table, async_event_kind, dumpfile) =20 +def decode_async_bh(eid, name, dumpfile): + op_id =3D read_qword(dumpfile) + print_event(eid, name) + return True + +def decode_async_bh_oneshot(eid, name, dumpfile): + op_id =3D read_qword(dumpfile) + print_event(eid, name) + return True + +def decode_async_char_read(eid, name, dumpfile): + char_id =3D read_byte(dumpfile) + size =3D read_dword(dumpfile) + print_event(eid, name, "device:%x chars:%s" % (char_id, dumpfile.read(= size))) + return True + +def decode_async_block(eid, name, dumpfile): + op_id =3D read_qword(dumpfile) + print_event(eid, name) + return True + +def decode_async_net(eid, name, dumpfile): + net_id =3D read_byte(dumpfile) + flags =3D read_dword(dumpfile) + size =3D read_dword(dumpfile) + swallow_bytes(eid, name, dumpfile, size) + print_event(eid, name, "net:%x flags:%x bytes:%d" % (net_id, flags, si= ze)) + return True + total_insns =3D 0 =20 def decode_instruction(eid, name, dumpfile): @@ -166,6 +207,10 @@ def decode_instruction(eid, name, dumpfile): print_event(eid, name, "+ %d -> %d" % (ins_diff, total_insns)) return True =20 +def decode_shutdown(eid, name, dumpfile): + print_event(eid, name) + return True + def decode_char_write(eid, name, dumpfile): res =3D read_dword(dumpfile) offset =3D read_dword(dumpfile) @@ -177,7 +222,7 @@ def decode_audio_out(eid, name, dumpfile): print_event(eid, name, "%d" % (audio_data)) return True =20 -def decode_checkpoint(eid, name, dumpfile): +def __decode_checkpoint(eid, name, dumpfile, old): """Decode a checkpoint. =20 Checkpoints contain a series of async events with their own specific d= ata. @@ -189,14 +234,20 @@ def decode_checkpoint(eid, name, dumpfile): =20 # if the next event is EVENT_ASYNC there are a bunch of # async events to read, otherwise we are done - if next_event !=3D 3: - print_event(eid, name, "no additional data", event_number) - else: + if (old and next_event =3D=3D 3) or (not old and next_event >=3D 3 and= next_event <=3D 9): print_event(eid, name, "more data follows", event_number) + else: + print_event(eid, name, "no additional data", event_number) =20 replay_state.reuse_event(next_event) return True =20 +def decode_checkpoint_old(eid, name, dumpfile): + return __decode_checkpoint(eid, name, dumpfile, False) + +def decode_checkpoint(eid, name, dumpfile): + return __decode_checkpoint(eid, name, dumpfile, True) + def decode_checkpoint_init(eid, name, dumpfile): print_event(eid, name) return True @@ -212,15 +263,23 @@ def decode_clock(eid, name, dumpfile): =20 def decode_random(eid, name, dumpfile): ret =3D read_dword(dumpfile) - data =3D read_array(dumpfile) - print_event(eid, "%d bytes of random data" % len(data)) + size =3D read_dword(dumpfile) + swallow_bytes(eid, name, dumpfile, size) + if (ret): + print_event(eid, name, "%d bytes (getrandom failed)" % (size)) + else: + print_event(eid, name, "%d bytes" % (size)) return True =20 +def decode_end(eid, name, dumpfile): + print_event(eid, name) + return False + # pre-MTTCG merge v5_event_table =3D [Decoder(0, "EVENT_INSTRUCTION", decode_instruction), Decoder(1, "EVENT_INTERRUPT", decode_interrupt), Decoder(2, "EVENT_EXCEPTION", decode_plain), - Decoder(3, "EVENT_ASYNC", decode_async), + Decoder(3, "EVENT_ASYNC", decode_async_old), Decoder(4, "EVENT_SHUTDOWN", decode_unimp), Decoder(5, "EVENT_CHAR_WRITE", decode_char_write), Decoder(6, "EVENT_CHAR_READ_ALL", decode_unimp), @@ -242,7 +301,7 @@ def decode_random(eid, name, dumpfile): v6_event_table =3D [Decoder(0, "EVENT_INSTRUCTION", decode_instruction), Decoder(1, "EVENT_INTERRUPT", decode_interrupt), Decoder(2, "EVENT_EXCEPTION", decode_plain), - Decoder(3, "EVENT_ASYNC", decode_async), + Decoder(3, "EVENT_ASYNC", decode_async_old), Decoder(4, "EVENT_SHUTDOWN", decode_unimp), Decoder(5, "EVENT_CHAR_WRITE", decode_char_write), Decoder(6, "EVENT_CHAR_READ_ALL", decode_unimp), @@ -266,7 +325,7 @@ def decode_random(eid, name, dumpfile): v7_event_table =3D [Decoder(0, "EVENT_INSTRUCTION", decode_instruction), Decoder(1, "EVENT_INTERRUPT", decode_interrupt), Decoder(2, "EVENT_EXCEPTION", decode_unimp), - Decoder(3, "EVENT_ASYNC", decode_async), + Decoder(3, "EVENT_ASYNC", decode_async_old), Decoder(4, "EVENT_SHUTDOWN", decode_unimp), Decoder(5, "EVENT_SHUTDOWN_HOST_ERR", decode_unimp), Decoder(6, "EVENT_SHUTDOWN_HOST_QMP", decode_unimp), @@ -296,32 +355,31 @@ def decode_random(eid, name, dumpfile): =20 v12_event_table =3D [Decoder(0, "EVENT_INSTRUCTION", decode_instruction), Decoder(1, "EVENT_INTERRUPT", decode_interrupt), - Decoder(2, "EVENT_EXCEPTION", decode_plain), - Decoder(3, "EVENT_ASYNC", decode_async), - Decoder(4, "EVENT_ASYNC", decode_async), - Decoder(5, "EVENT_ASYNC", decode_async), - Decoder(6, "EVENT_ASYNC", decode_async), - Decoder(6, "EVENT_ASYNC", decode_async), - Decoder(8, "EVENT_ASYNC", decode_async), - Decoder(9, "EVENT_ASYNC", decode_async), - Decoder(10, "EVENT_ASYNC", decode_async), - Decoder(11, "EVENT_SHUTDOWN", decode_unimp), - Decoder(12, "EVENT_SHUTDOWN_HOST_ERR", decode_unimp), - Decoder(13, "EVENT_SHUTDOWN_HOST_QMP_QUIT", decode_unimp= ), - Decoder(14, "EVENT_SHUTDOWN_HOST_QMP_RESET", decode_unim= p), - Decoder(14, "EVENT_SHUTDOWN_HOST_SIGNAL", decode_unimp), - Decoder(15, "EVENT_SHUTDOWN_HOST_UI", decode_unimp), - Decoder(16, "EVENT_SHUTDOWN_GUEST_SHUTDOWN", decode_unim= p), - Decoder(17, "EVENT_SHUTDOWN_GUEST_RESET", decode_unimp), - Decoder(18, "EVENT_SHUTDOWN_GUEST_PANIC", decode_unimp), - Decoder(19, "EVENT_SHUTDOWN_GUEST_SUBSYSTEM_RESET", deco= de_unimp), - Decoder(20, "EVENT_SHUTDOWN_GUEST_SNAPSHOT_LOAD", decode= _unimp), - Decoder(21, "EVENT_SHUTDOWN___MAX", decode_unimp), + Decoder(2, "EVENT_EXCEPTION", decode_exception), + Decoder(3, "EVENT_ASYNC_BH", decode_async_bh), + Decoder(4, "EVENT_ASYNC_BH_ONESHOT", decode_async_bh_one= shot), + Decoder(5, "EVENT_ASYNC_INPUT", decode_unimp), + Decoder(6, "EVENT_ASYNC_INPUT_SYNC", decode_unimp), + Decoder(7, "EVENT_ASYNC_CHAR_READ", decode_async_char_re= ad), + Decoder(8, "EVENT_ASYNC_BLOCK", decode_async_block), + Decoder(9, "EVENT_ASYNC_NET", decode_async_net), + Decoder(10, "EVENT_SHUTDOWN", decode_shutdown), + Decoder(11, "EVENT_SHUTDOWN_HOST_ERR", decode_shutdown), + Decoder(12, "EVENT_SHUTDOWN_HOST_QMP_QUIT", decode_shutd= own), + Decoder(13, "EVENT_SHUTDOWN_HOST_QMP_RESET", decode_shut= down), + Decoder(14, "EVENT_SHUTDOWN_HOST_SIGNAL", decode_shutdow= n), + Decoder(15, "EVENT_SHUTDOWN_HOST_UI", decode_shutdown), + Decoder(16, "EVENT_SHUTDOWN_GUEST_SHUTDOWN", decode_shut= down), + Decoder(17, "EVENT_SHUTDOWN_GUEST_RESET", decode_shutdow= n), + Decoder(18, "EVENT_SHUTDOWN_GUEST_PANIC", decode_shutdow= n), + Decoder(19, "EVENT_SHUTDOWN_SUBSYS_RESET", decode_shutdo= wn), + Decoder(20, "EVENT_SHUTDOWN_SNAPSHOT_LOAD", decode_shutd= own), + Decoder(21, "EVENT_SHUTDOWN___MAX", decode_shutdown), Decoder(22, "EVENT_CHAR_WRITE", decode_char_write), Decoder(23, "EVENT_CHAR_READ_ALL", decode_unimp), Decoder(24, "EVENT_CHAR_READ_ALL_ERROR", decode_unimp), - Decoder(25, "EVENT_AUDIO_IN", decode_unimp), - Decoder(26, "EVENT_AUDIO_OUT", decode_audio_out), + Decoder(25, "EVENT_AUDIO_OUT", decode_audio_out), + Decoder(26, "EVENT_AUDIO_IN", decode_unimp), Decoder(27, "EVENT_RANDOM", decode_random), Decoder(28, "EVENT_CLOCK_HOST", decode_clock), Decoder(29, "EVENT_CLOCK_VIRTUAL_RT", decode_clock), @@ -334,6 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scripts/replay-dump.py: rejig decoders in event number order Date: Mon, 26 Feb 2024 18:29:38 +1000 Message-ID: <20240226082945.1452499-3-npiggin@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20240226082945.1452499-1-npiggin@gmail.com> References: <20240226082945.1452499-1-npiggin@gmail.com> MIME-Version: 1.0 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=2607:f8b0:4864:20::629; envelope-from=npiggin@gmail.com; helo=mail-pl1-x629.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 @gmail.com) X-ZM-MESSAGEID: 1708936294777100001 Content-Type: text/plain; charset="utf-8" Sort decoder functions to be ascending in order of event number, same as the decoder tables. Signed-off-by: Nicholas Piggin Reviewed-by: Alex Benn=C3=A9e --- scripts/replay-dump.py | 56 +++++++++++++++++++++--------------------- 1 file changed, 28 insertions(+), 28 deletions(-) diff --git a/scripts/replay-dump.py b/scripts/replay-dump.py index 419ee3257b..b82659cfb6 100755 --- a/scripts/replay-dump.py +++ b/scripts/replay-dump.py @@ -139,6 +139,19 @@ def swallow_bytes(eid, name, dumpfile, nr): """Swallow nr bytes of data without looking at it""" dumpfile.seek(nr, os.SEEK_CUR) =20 +total_insns =3D 0 + +def decode_instruction(eid, name, dumpfile): + global total_insns + ins_diff =3D read_dword(dumpfile) + total_insns +=3D ins_diff + print_event(eid, name, "+ %d -> %d" % (ins_diff, total_insns)) + return True + +def decode_interrupt(eid, name, dumpfile): + print_event(eid, name) + return True + def decode_exception(eid, name, dumpfile): print_event(eid, name) return True @@ -198,15 +211,6 @@ def decode_async_net(eid, name, dumpfile): print_event(eid, name, "net:%x flags:%x bytes:%d" % (net_id, flags, si= ze)) return True =20 -total_insns =3D 0 - -def decode_instruction(eid, name, dumpfile): - global total_insns - ins_diff =3D read_dword(dumpfile) - total_insns +=3D ins_diff - print_event(eid, name, "+ %d -> %d" % (ins_diff, total_insns)) - return True - def decode_shutdown(eid, name, dumpfile): print_event(eid, name) return True @@ -222,6 +226,21 @@ def decode_audio_out(eid, name, dumpfile): print_event(eid, name, "%d" % (audio_data)) return True =20 +def decode_random(eid, name, dumpfile): + ret =3D read_dword(dumpfile) + size =3D read_dword(dumpfile) + swallow_bytes(eid, name, dumpfile, size) + if (ret): + print_event(eid, name, "%d bytes (getrandom failed)" % (size)) + else: + print_event(eid, name, "%d bytes" % (size)) + return True + +def decode_clock(eid, name, dumpfile): + clock_data =3D read_qword(dumpfile) + print_event(eid, name, "0x%x" % (clock_data)) + return True + def __decode_checkpoint(eid, name, dumpfile, old): """Decode a checkpoint. =20 @@ -252,25 +271,6 @@ def decode_checkpoint_init(eid, name, dumpfile): print_event(eid, name) return True =20 -def decode_interrupt(eid, name, dumpfile): - print_event(eid, name) - return True - -def decode_clock(eid, name, dumpfile): - clock_data =3D read_qword(dumpfile) - print_event(eid, name, "0x%x" % (clock_data)) - return True - -def decode_random(eid, name, dumpfile): - ret =3D read_dword(dumpfile) - size =3D read_dword(dumpfile) - swallow_bytes(eid, name, dumpfile, size) - if (ret): - print_event(eid, name, "%d bytes (getrandom failed)" % (size)) - else: - print_event(eid, name, "%d bytes" % (size)) - return True - def decode_end(eid, name, dumpfile): print_event(eid, name) return False --=20 2.42.0 From nobody Tue Nov 26 08:33:51 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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Mon, 26 Feb 2024 00:30:17 -0800 (PST) From: Nicholas Piggin To: qemu-devel@nongnu.org Cc: Nicholas Piggin , Pavel Dovgalyuk , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Richard Henderson , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Paolo Bonzini , John Snow , Cleber Rosa , Wainer dos Santos Moschetta , Beraldo Leal Subject: [PATCH v3 3/9] tests/avocado: excercise scripts/replay-dump.py in replay tests Date: Mon, 26 Feb 2024 18:29:39 +1000 Message-ID: <20240226082945.1452499-4-npiggin@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20240226082945.1452499-1-npiggin@gmail.com> References: <20240226082945.1452499-1-npiggin@gmail.com> MIME-Version: 1.0 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=2607:f8b0:4864:20::632; envelope-from=npiggin@gmail.com; helo=mail-pl1-x632.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 @gmail.com) X-ZM-MESSAGEID: 1708936280735100001 Content-Type: text/plain; charset="utf-8" This runs replay-dump.py after recording a trace, and fails the test if the script fails. replay-dump.py is modified to exit with non-zero if an error is encountered while parsing, to support this. Reviewed-by: Pavel Dovgalyuk Signed-off-by: Nicholas Piggin --- scripts/replay-dump.py | 6 ++++-- tests/avocado/replay_kernel.py | 16 ++++++++++++++++ tests/avocado/replay_linux.py | 15 +++++++++++++++ 3 files changed, 35 insertions(+), 2 deletions(-) diff --git a/scripts/replay-dump.py b/scripts/replay-dump.py index b82659cfb6..4ce7ff51cc 100755 --- a/scripts/replay-dump.py +++ b/scripts/replay-dump.py @@ -21,6 +21,7 @@ import argparse import struct import os +import sys from collections import namedtuple from os import path =20 @@ -100,7 +101,7 @@ def call_decode(table, index, dumpfile): print("Could not decode index: %d" % (index)) print("Entry is: %s" % (decoder)) print("Decode Table is:\n%s" % (table)) - return False + raise(Exception("unknown event")) else: return decoder.fn(decoder.eid, decoder.name, dumpfile) =20 @@ -121,7 +122,7 @@ def print_event(eid, name, string=3DNone, event_count= =3DNone): def decode_unimp(eid, name, _unused_dumpfile): "Unimplemented decoder, will trigger exit" print("%s not handled - will now stop" % (name)) - return False + raise(Exception("unhandled event")) =20 def decode_plain(eid, name, _unused_dumpfile): "Plain events without additional data" @@ -434,6 +435,7 @@ def decode_file(filename): dumpfile) except Exception as inst: print(f"error {inst}") + sys.exit(1) =20 finally: print(f"Reached {dumpfile.tell()} of {dumpsize} bytes") diff --git a/tests/avocado/replay_kernel.py b/tests/avocado/replay_kernel.py index 10d99403a4..9b3ee6726b 100644 --- a/tests/avocado/replay_kernel.py +++ b/tests/avocado/replay_kernel.py @@ -13,6 +13,7 @@ import shutil import logging import time +import subprocess =20 from avocado import skip from avocado import skipUnless @@ -22,6 +23,11 @@ from avocado.utils import process from boot_linux_console import LinuxKernelTest =20 +from pathlib import Path + +self_dir =3D Path(__file__).parent +src_dir =3D self_dir.parent.parent + class ReplayKernelBase(LinuxKernelTest): """ Boots a Linux kernel in record mode and checks that the console @@ -63,6 +69,8 @@ def run_vm(self, kernel_path, kernel_command_line, consol= e_pattern, vm.shutdown() logger.info('finished the recording with log size %s bytes' % os.path.getsize(replay_path)) + self.run_replay_dump(replay_path) + logger.info('successfully tested replay-dump.py') else: vm.wait() logger.info('successfully finished the replay') @@ -70,6 +78,14 @@ def run_vm(self, kernel_path, kernel_command_line, conso= le_pattern, logger.info('elapsed time %.2f sec' % elapsed) return elapsed =20 + def run_replay_dump(self, replay_path): + try: + subprocess.check_call(["./scripts/replay-dump.py", + "-f", replay_path], + cwd=3Dsrc_dir, stdout=3Dsubprocess.DEVNU= LL) + except subprocess.CalledProcessError: + self.fail('replay-dump.py failed') + def run_rr(self, kernel_path, kernel_command_line, console_pattern, shift=3D7, args=3DNone): replay_path =3D os.path.join(self.workdir, 'replay.bin') diff --git a/tests/avocado/replay_linux.py b/tests/avocado/replay_linux.py index f3a43dc98c..e4539c5551 100644 --- a/tests/avocado/replay_linux.py +++ b/tests/avocado/replay_linux.py @@ -21,6 +21,11 @@ from avocado.utils.path import find_command from avocado_qemu import LinuxTest =20 +from pathlib import Path + +self_dir =3D Path(__file__).parent +src_dir =3D self_dir.parent.parent + class ReplayLinux(LinuxTest): """ Boots a Linux system, checking for a successful initialization @@ -94,6 +99,8 @@ def launch_and_wait(self, record, args, shift): vm.shutdown() logger.info('finished the recording with log size %s bytes' % os.path.getsize(replay_path)) + self.run_replay_dump(replay_path) + logger.info('successfully tested replay-dump.py') else: vm.event_wait('SHUTDOWN', self.timeout) vm.wait() @@ -108,6 +115,14 @@ def run_rr(self, args=3DNone, shift=3D7): logger =3D logging.getLogger('replay') logger.info('replay overhead {:.2%}'.format(t2 / t1 - 1)) =20 + def run_replay_dump(self, replay_path): + try: + subprocess.check_call(["./scripts/replay-dump.py", + "-f", replay_path], + cwd=3Dsrc_dir, stdout=3Dsubprocess.DEVNU= LL) + except subprocess.CalledProcessError: + self.fail('replay-dump.py failed') + @skipUnless(os.getenv('AVOCADO_TIMEOUT_EXPECTED'), 'Test might timeout') class ReplayLinuxX8664(ReplayLinux): """ --=20 2.42.0 From nobody Tue Nov 26 08:33:51 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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Mon, 26 Feb 2024 00:30:22 -0800 (PST) From: Nicholas Piggin To: qemu-devel@nongnu.org Cc: Nicholas Piggin , Pavel Dovgalyuk , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Richard Henderson , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Paolo Bonzini , John Snow , Cleber Rosa , Wainer dos Santos Moschetta , Beraldo Leal Subject: [PATCH v3 4/9] replay: allow runstate shutdown->running when replaying trace Date: Mon, 26 Feb 2024 18:29:40 +1000 Message-ID: <20240226082945.1452499-5-npiggin@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20240226082945.1452499-1-npiggin@gmail.com> References: <20240226082945.1452499-1-npiggin@gmail.com> MIME-Version: 1.0 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=2607:f8b0:4864:20::62c; envelope-from=npiggin@gmail.com; helo=mail-pl1-x62c.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 @gmail.com) X-ZM-MESSAGEID: 1708936387047100003 Content-Type: text/plain; charset="utf-8" When replaying a trace, it is possible to go from shutdown to running with a reverse-debugging step. This can be useful if the problem being debugged triggers a reset or shutdown. This can be tested by making a recording of a machine that shuts down, then using -action shutdown=3Dpause when replaying it. Continuing to the end of the trace then reverse-stepping in gdb crashes due to invalid runstate transition. Just permitting the transition seems to be all that's necessary for reverse-debugging to work well in such a state. Reviewed-by: Pavel Dovgalyuk Signed-off-by: Nicholas Piggin --- include/sysemu/runstate.h | 1 + replay/replay.c | 2 ++ system/runstate.c | 19 +++++++++++++++++++ 3 files changed, 22 insertions(+) diff --git a/include/sysemu/runstate.h b/include/sysemu/runstate.h index 0117d243c4..fe25eed3c0 100644 --- a/include/sysemu/runstate.h +++ b/include/sysemu/runstate.h @@ -9,6 +9,7 @@ void runstate_set(RunState new_state); RunState runstate_get(void); bool runstate_is_running(void); bool runstate_needs_reset(void); +void runstate_replay_enable(void); =20 typedef void VMChangeStateHandler(void *opaque, bool running, RunState sta= te); =20 diff --git a/replay/replay.c b/replay/replay.c index 3fd241a4fc..2951eed3bd 100644 --- a/replay/replay.c +++ b/replay/replay.c @@ -383,6 +383,8 @@ static void replay_enable(const char *fname, int mode) /* go to the beginning */ fseek(replay_file, HEADER_SIZE, SEEK_SET); replay_fetch_data_kind(); + + runstate_replay_enable(); } =20 replay_init_events(); diff --git a/system/runstate.c b/system/runstate.c index d6ab860eca..bd0fed8657 100644 --- a/system/runstate.c +++ b/system/runstate.c @@ -182,6 +182,12 @@ static const RunStateTransition runstate_transitions_d= ef[] =3D { { RUN_STATE__MAX, RUN_STATE__MAX }, }; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::c36; envelope-from=npiggin@gmail.com; helo=mail-oo1-xc36.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 @gmail.com) X-ZM-MESSAGEID: 1708936260667100001 Content-Type: text/plain; charset="utf-8" This reverts commit 1f881ea4a444ef36a8b6907b0b82be4b3af253a2. That commit causes reverse_debugging.py test failures, and does not seem to solve the root cause of the problem x86-64 still hangs in record/replay tests. The problem with short-cutting the iowait that was taken during record phase is that related events will not get consumed at the same points (e.g., reading the clock). A hang with zero icount always seems to be a symptom of an earlier problem that has caused the recording to become out of synch with the execution and consumption of events by replay. Signed-off-by: Nicholas Piggin --- include/sysemu/replay.h | 5 ----- accel/tcg/tcg-accel-ops-rr.c | 2 +- replay/replay.c | 21 --------------------- 3 files changed, 1 insertion(+), 27 deletions(-) diff --git a/include/sysemu/replay.h b/include/sysemu/replay.h index f229b2109c..8102fa54f0 100644 --- a/include/sysemu/replay.h +++ b/include/sysemu/replay.h @@ -73,11 +73,6 @@ int replay_get_instructions(void); /*! Updates instructions counter in replay mode. */ void replay_account_executed_instructions(void); =20 -/** - * replay_can_wait: check if we should pause for wait-io - */ -bool replay_can_wait(void); - /* Processing clocks and other time sources */ =20 /*! Save the specified clock */ diff --git a/accel/tcg/tcg-accel-ops-rr.c b/accel/tcg/tcg-accel-ops-rr.c index 894e73e52c..a942442a33 100644 --- a/accel/tcg/tcg-accel-ops-rr.c +++ b/accel/tcg/tcg-accel-ops-rr.c @@ -109,7 +109,7 @@ static void rr_wait_io_event(void) { CPUState *cpu; =20 - while (all_cpu_threads_idle() && replay_can_wait()) { + while (all_cpu_threads_idle()) { rr_stop_kick_timer(); qemu_cond_wait_bql(first_cpu->halt_cond); } diff --git a/replay/replay.c b/replay/replay.c index 2951eed3bd..ee2b979dfc 100644 --- a/replay/replay.c +++ b/replay/replay.c @@ -451,27 +451,6 @@ void replay_start(void) replay_enable_events(); } =20 -/* - * For none/record the answer is yes. - */ -bool replay_can_wait(void) -{ - if (replay_mode =3D=3D REPLAY_MODE_PLAY) { - /* - * For playback we shouldn't ever be at a point we wait. If - * the instruction count has reached zero and we have an - * unconsumed event we should go around again and consume it. - */ - if (replay_state.instruction_count =3D=3D 0 && replay_state.has_un= read_data) { - return false; - } else { - replay_sync_error("Playback shouldn't have to iowait"); - } - } - return true; -} - - void replay_finish(void) { if (replay_mode =3D=3D REPLAY_MODE_NONE) { --=20 2.42.0 From nobody Tue Nov 26 08:33:51 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; dmarc=pass(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1708936317; cv=none; d=zohomail.com; s=zohoarc; b=XFRe5SSConR51idrq23Urkkt5Rborpz/CYFikLlyPi5IN/MMvRN8KHIQ7se8CMq6Jd/riCIMUW2HpD3BY4KcZC3QvDvDNDQbCLfM3M7Q1JCovQ/0kSNrVRjh1bajldEyTaATqgKMGgaEiwKFn4xEECvuiQNABtoGrNbDn/vOMG8= ARC-Message-Signature: i=1; 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Mon, 26 Feb 2024 00:30:34 -0800 (PST) From: Nicholas Piggin To: qemu-devel@nongnu.org Cc: Nicholas Piggin , Pavel Dovgalyuk , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Richard Henderson , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Paolo Bonzini , John Snow , Cleber Rosa , Wainer dos Santos Moschetta , Beraldo Leal Subject: [PATCH v3 6/9] chardev: set record/replay on the base device of a muxed device Date: Mon, 26 Feb 2024 18:29:42 +1000 Message-ID: <20240226082945.1452499-7-npiggin@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20240226082945.1452499-1-npiggin@gmail.com> References: <20240226082945.1452499-1-npiggin@gmail.com> MIME-Version: 1.0 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=2607:f8b0:4864:20::62e; envelope-from=npiggin@gmail.com; helo=mail-pl1-x62e.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 @gmail.com) X-ZM-MESSAGEID: 1708936319062100002 Content-Type: text/plain; charset="utf-8" chardev events to a muxed device don't get recorded because e.g., qemu_chr_be_write() checks whether the base device has the record flag set. This can be seen when replaying a trace that has characters typed into the console, an examination of the log shows they are not recorded. Setting QEMU_CHAR_FEATURE_REPLAY on the base chardev fixes the problem. Signed-off-by: Nicholas Piggin --- chardev/char.c | 71 +++++++++++++++++++++++++++++++++++--------------- 1 file changed, 50 insertions(+), 21 deletions(-) diff --git a/chardev/char.c b/chardev/char.c index 3c43fb1278..ba847b6e9e 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -615,11 +615,24 @@ ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, E= rror **errp) return backend; } =20 -Chardev *qemu_chr_new_from_opts(QemuOpts *opts, GMainContext *context, - Error **errp) +static void qemu_chardev_set_replay(Chardev *chr, Error **errp) +{ + if (replay_mode !=3D REPLAY_MODE_NONE) { + if (CHARDEV_GET_CLASS(chr)->chr_ioctl) { + error_setg(errp, "Replay: ioctl is not supported " + "for serial devices yet"); + return; + } + qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_REPLAY); + replay_register_char_driver(chr); + } +} + +static Chardev *__qemu_chr_new_from_opts(QemuOpts *opts, GMainContext *con= text, + bool replay, Error **errp) { const ChardevClass *cc; - Chardev *chr =3D NULL; + Chardev *base =3D NULL, *chr =3D NULL; ChardevBackend *backend =3D NULL; const char *name =3D qemu_opt_get(opts, "backend"); const char *id =3D qemu_opts_id(opts); @@ -657,11 +670,11 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts, GMain= Context *context, chr =3D qemu_chardev_new(bid ? bid : id, object_class_get_name(OBJECT_CLASS(cc)), backend, context, errp); - if (chr =3D=3D NULL) { goto out; } =20 + base =3D chr; if (bid) { Chardev *mux; qapi_free_ChardevBackend(backend); @@ -681,11 +694,25 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts, GMain= Context *context, out: qapi_free_ChardevBackend(backend); g_free(bid); + + if (replay && base) { + /* RR should be set on the base device, not the mux */ + qemu_chardev_set_replay(base, errp); + } + return chr; } =20 -Chardev *qemu_chr_new_noreplay(const char *label, const char *filename, - bool permit_mux_mon, GMainContext *context) +Chardev *qemu_chr_new_from_opts(QemuOpts *opts, GMainContext *context, + Error **errp) +{ + /* XXX: should this really not record/replay? */ + return __qemu_chr_new_from_opts(opts, context, false, errp); +} + +static Chardev *__qemu_chr_new(const char *label, const char *filename, + bool permit_mux_mon, GMainContext *context, + bool replay) { const char *p; Chardev *chr; @@ -693,14 +720,22 @@ Chardev *qemu_chr_new_noreplay(const char *label, con= st char *filename, Error *err =3D NULL; =20 if (strstart(filename, "chardev:", &p)) { - return qemu_chr_find(p); + chr =3D qemu_chr_find(p); + if (replay) { + qemu_chardev_set_replay(chr, &err); + if (err) { + error_report_err(err); + return NULL; + } + } + return chr; } =20 opts =3D qemu_chr_parse_compat(label, filename, permit_mux_mon); if (!opts) return NULL; =20 - chr =3D qemu_chr_new_from_opts(opts, context, &err); + chr =3D __qemu_chr_new_from_opts(opts, context, replay, &err); if (!chr) { error_report_err(err); goto out; @@ -722,24 +757,18 @@ out: return chr; } =20 +Chardev *qemu_chr_new_noreplay(const char *label, const char *filename, + bool permit_mux_mon, GMainContext *context) +{ + return __qemu_chr_new(label, filename, permit_mux_mon, context, false); +} + static Chardev *qemu_chr_new_permit_mux_mon(const char *label, const char *filename, bool permit_mux_mon, GMainContext *context) { - Chardev *chr; - chr =3D qemu_chr_new_noreplay(label, filename, permit_mux_mon, context= ); - if (chr) { - if (replay_mode !=3D REPLAY_MODE_NONE) { - qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_REPLAY); - } - if (qemu_chr_replay(chr) && CHARDEV_GET_CLASS(chr)->chr_ioctl) { - error_report("Replay: ioctl is not supported " - "for serial devices yet"); - } - replay_register_char_driver(chr); - } - return chr; + return __qemu_chr_new(label, filename, permit_mux_mon, context, true); } =20 Chardev *qemu_chr_new(const char *label, const char *filename, --=20 2.42.0 From nobody Tue Nov 26 08:33:51 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; dmarc=pass(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::636; envelope-from=npiggin@gmail.com; helo=mail-pl1-x636.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 @gmail.com) X-ZM-MESSAGEID: 1708936543469100005 Content-Type: text/plain; charset="utf-8" Migration reads host clocks when not holding the replay_mutex, which asserts when recording a trace. It seems that the times should be host times like other statistics in MigrationState, so this can easily be converted. Signed-off-by: Nicholas Piggin --- migration/migration.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/migration/migration.c b/migration/migration.c index ab21de2cad..2e794db75c 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -3316,7 +3316,7 @@ static void *migration_thread(void *opaque) { MigrationState *s =3D opaque; MigrationThread *thread =3D NULL; - int64_t setup_start =3D qemu_clock_get_ms(QEMU_CLOCK_HOST); + int64_t setup_start =3D qemu_clock_get_ms(QEMU_CLOCK_REALTIME); MigThrError thr_error; bool urgent =3D false; =20 @@ -3368,7 +3368,7 @@ static void *migration_thread(void *opaque) qemu_savevm_wait_unplug(s, MIGRATION_STATUS_SETUP, MIGRATION_STATUS_ACTIVE); =20 - s->setup_time =3D qemu_clock_get_ms(QEMU_CLOCK_HOST) - setup_start; + s->setup_time =3D qemu_clock_get_ms(QEMU_CLOCK_REALTIME) - setup_start; =20 trace_migration_thread_setup_complete(); =20 @@ -3447,7 +3447,7 @@ static void *bg_migration_thread(void *opaque) =20 migration_rate_set(RATE_LIMIT_DISABLED); =20 - setup_start =3D qemu_clock_get_ms(QEMU_CLOCK_HOST); + setup_start =3D qemu_clock_get_ms(QEMU_CLOCK_REALTIME); /* * We want to save vmstate for the moment when migration has been * initiated but also we want to save RAM content while VM is running. @@ -3480,7 +3480,7 @@ static void *bg_migration_thread(void *opaque) qemu_savevm_wait_unplug(s, MIGRATION_STATUS_SETUP, MIGRATION_STATUS_ACTIVE); =20 - s->setup_time =3D qemu_clock_get_ms(QEMU_CLOCK_HOST) - setup_start; + s->setup_time =3D qemu_clock_get_ms(QEMU_CLOCK_REALTIME) - setup_start; =20 trace_migration_thread_setup_complete(); migration_downtime_start(s); --=20 2.42.0 From nobody Tue Nov 26 08:33:51 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; dmarc=pass(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1708936373; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::634; envelope-from=npiggin@gmail.com; helo=mail-pl1-x634.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 @gmail.com) X-ZM-MESSAGEID: 1708936375028100001 Content-Type: text/plain; charset="utf-8" Migration causes a number of events that need to go in the replay trace, such as vm state transitions. The replay_mutex lock needs to be held for these. The simplest approach seems to be just take it up-front when taking the bql. Signed-off-by: Nicholas Piggin --- migration/migration.h | 2 -- migration/migration.c | 11 ++++++++++- 2 files changed, 10 insertions(+), 3 deletions(-) diff --git a/migration/migration.h b/migration/migration.h index f2c8b8f286..0621479a4e 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -543,6 +543,4 @@ int migration_rp_wait(MigrationState *s); */ void migration_rp_kick(MigrationState *s); =20 -int migration_stop_vm(RunState state); - #endif diff --git a/migration/migration.c b/migration/migration.c index 2e794db75c..80a5ce17d1 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -24,6 +24,7 @@ #include "socket.h" #include "sysemu/runstate.h" #include "sysemu/sysemu.h" +#include "sysemu/replay.h" #include "sysemu/cpu-throttle.h" #include "rdma.h" #include "ram.h" @@ -162,7 +163,7 @@ static gint page_request_addr_cmp(gconstpointer ap, gco= nstpointer bp) return (a > b) - (a < b); } =20 -int migration_stop_vm(RunState state) +static int migration_stop_vm(RunState state) { int ret =3D vm_stop_force_state(state); =20 @@ -2433,6 +2434,7 @@ static int postcopy_start(MigrationState *ms, Error *= *errp) } =20 trace_postcopy_start(); + replay_mutex_lock(); bql_lock(); trace_postcopy_start_set_run(); =20 @@ -2542,6 +2544,7 @@ static int postcopy_start(MigrationState *ms, Error *= *errp) migration_downtime_end(ms); =20 bql_unlock(); + replay_mutex_unlock(); =20 if (migrate_postcopy_ram()) { /* @@ -2583,6 +2586,7 @@ fail: } } bql_unlock(); + replay_mutex_unlock(); return -1; } =20 @@ -2634,6 +2638,7 @@ static int migration_completion_precopy(MigrationStat= e *s, { int ret; =20 + replay_mutex_lock(); bql_lock(); migration_downtime_start(s); =20 @@ -2662,6 +2667,7 @@ static int migration_completion_precopy(MigrationStat= e *s, s->block_inactive); out_unlock: bql_unlock(); + replay_mutex_unlock(); return ret; } =20 @@ -3485,6 +3491,7 @@ static void *bg_migration_thread(void *opaque) trace_migration_thread_setup_complete(); migration_downtime_start(s); =20 + replay_mutex_lock(); bql_lock(); =20 s->vm_old_state =3D runstate_get(); @@ -3522,6 +3529,7 @@ static void *bg_migration_thread(void *opaque) */ migration_bh_schedule(bg_migration_vm_start_bh, s); bql_unlock(); + replay_mutex_unlock(); =20 while (migration_is_active(s)) { MigIterateState iter_state =3D bg_migration_iteration_run(s); @@ -3551,6 +3559,7 @@ fail: migrate_set_state(&s->state, MIGRATION_STATUS_ACTIVE, MIGRATION_STATUS_FAILED); bql_unlock(); + replay_mutex_unlock(); } =20 bg_migration_iteration_finish(s); --=20 2.42.0 From nobody Tue Nov 26 08:33:51 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; dmarc=pass(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1708936496; cv=none; d=zohomail.com; s=zohoarc; b=G9IIg2QZnJYs9esuBKfZ/CljZnJRM/3KsPqXRjB+x1bRysaV68vKmlFyCwHf4+RD4WSlhqZ8i9JOTNWcPweIhekaQgeoPl1ZWLdH2IE4ozhOFpWwu7RvYT8yxyQwkFVC4Y/WrAwI3Desq8Ma6x+gnHu6HSrvFW+klSOUhJbQcnE= ARC-Message-Signature: i=1; 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Mon, 26 Feb 2024 00:30:51 -0800 (PST) From: Nicholas Piggin To: qemu-devel@nongnu.org Cc: Nicholas Piggin , Pavel Dovgalyuk , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Richard Henderson , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Paolo Bonzini , John Snow , Cleber Rosa , Wainer dos Santos Moschetta , Beraldo Leal Subject: [PATCH v3 9/9] tests/avocado/reverse_debugging.py: mark aarch64 and pseries as not flaky Date: Mon, 26 Feb 2024 18:29:45 +1000 Message-ID: <20240226082945.1452499-10-npiggin@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20240226082945.1452499-1-npiggin@gmail.com> References: <20240226082945.1452499-1-npiggin@gmail.com> MIME-Version: 1.0 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=2607:f8b0:4864:20::62b; envelope-from=npiggin@gmail.com; helo=mail-pl1-x62b.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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 @gmail.com) X-ZM-MESSAGEID: 1708936497350100001 Content-Type: text/plain; charset="utf-8" These seem to be quite solid, including on several gitlab CI runs. Enabling them should help catch breakage in future. And update the powernv comment -- gitlab isn't the problem, there are known gaps in implementation. Signed-off-by: Nicholas Piggin Reviewed-by: Alex Benn=C3=A9e Tested-by: Alex Benn=C3=A9e --- tests/avocado/reverse_debugging.py | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/tests/avocado/reverse_debugging.py b/tests/avocado/reverse_deb= ugging.py index 92855a02a5..8fe76ff921 100644 --- a/tests/avocado/reverse_debugging.py +++ b/tests/avocado/reverse_debugging.py @@ -223,9 +223,6 @@ class ReverseDebugging_AArch64(ReverseDebugging): =20 REG_PC =3D 32 =20 - # unidentified gitlab timeout problem - @skipUnless(os.getenv('QEMU_TEST_FLAKY_TESTS'), 'Test is unstable on G= itLab') - def test_aarch64_virt(self): """ :avocado: tags=3Darch:aarch64 @@ -248,14 +245,10 @@ class ReverseDebugging_ppc64(ReverseDebugging): =20 REG_PC =3D 0x40 =20 - # unidentified gitlab timeout problem - @skipUnless(os.getenv('QEMU_TEST_FLAKY_TESTS'), 'Test is unstable on G= itLab') - def test_ppc64_pseries(self): """ :avocado: tags=3Darch:ppc64 :avocado: tags=3Dmachine:pseries - :avocado: tags=3Dflaky """ # SLOF branches back to its entry point, which causes this test # to take the 'hit a breakpoint again' path. That's not a problem, @@ -264,7 +257,7 @@ def test_ppc64_pseries(self): self.reverse_debugging() =20 # See https://gitlab.com/qemu-project/qemu/-/issues/1992 - @skipUnless(os.getenv('QEMU_TEST_FLAKY_TESTS'), 'Test is unstable on G= itLab') + @skipUnless(os.getenv('QEMU_TEST_FLAKY_TESTS'), 'powernv migration sup= port is incomplete so rr debugging is flaky') =20 def test_ppc64_powernv(self): """ --=20 2.42.0