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X-Proofpoint-GUID: ErirpR87RLAFYlFe1dYVlhSMYf_F0PmF X-Proofpoint-ORIG-GUID: ErirpR87RLAFYlFe1dYVlhSMYf_F0PmF Received-SPF: pass client-ip=205.220.165.32; envelope-from=steven.sistare@oracle.com; helo=mx0a-00069f02.pphosted.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_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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org FYI, these patches still need RB: migration: propagate suspended runstate tests/qtest: precopy migration with suspend tests/qtest: postcopy migration with suspend This has RB, but the interaction between vm_start and vm_prepare_start changed, so needs another look. cpus: stop vm in suspended runstate - Steve On 12/6/2023 12:23 PM, Steve Sistare wrote: > Migration of a guest in the suspended runstate is broken. The incoming > migration code automatically tries to wake the guest, which is wrong; > the guest should end migration in the same runstate it started. Further, > after saving a snapshot in the suspended state and loading it, the vm_start > fails. The runstate is RUNNING, but the guest is not. > > See the commit messages for the details. > > Changes in V2: > * simplify "start on wakeup request" > * fix postcopy, snapshot, and background migration > * refactor fixes for each type of migration > * explicitly handled suspended events and runstate in tests > * add test for postcopy and background migration > > Changes in V3: > * rebase to tip > * fix hang in new function migrate_wait_for_dirty_mem > > Changes in V4: > * rebase to tip > * add patch for vm_prepare_start (thanks Peter) > * add patch to preserve cpu ticks > > Changes in V5: > * rebase to tip > * added patches to completely stop vm in suspended state: > cpus: refactor vm_stop > cpus: stop vm in suspended state > * added patch to partially resume vm in suspended state: > cpus: start vm in suspended state > * modified "preserve suspended ..." patches to use the above. > * deleted patch "preserve cpu ticks if suspended". stop ticks in > vm_stop_force_state instead. > * deleted patch "add runstate function". defined new helper function > migrate_new_runstate in "preserve suspended runstate" > * Added some RB's, but removed other RB's because the patches changed. > > Changes in V6: > * all vm_stop calls completely stop the suspended state > * refactored and updated the "cpus" patches > * simplified the "preserve suspended" patches > * added patch "bootfile per vm" > > Changes in V7: > * rebase to tip, add RB-s > * fix backwards compatibility for global_state.vm_was_suspended > * delete vm_prepare_start state argument, and rename patch > "pass runstate to vm_prepare_start" to > "check running not RUN_STATE_RUNNING" > * drop patches: > tests/qtest: bootfile per vm > tests/qtest: background migration with suspend > * rename runstate_is_started to runstate_is_live > * move wait_for_suspend in tests > > Steve Sistare (12): > cpus: vm_was_suspended > cpus: stop vm in suspended runstate > cpus: check running not RUN_STATE_RUNNING > cpus: vm_resume > migration: propagate suspended runstate > migration: preserve suspended runstate > migration: preserve suspended for snapshot > migration: preserve suspended for bg_migration > tests/qtest: migration events > tests/qtest: option to suspend during migration > tests/qtest: precopy migration with suspend > tests/qtest: postcopy migration with suspend > > backends/tpm/tpm_emulator.c | 2 +- > hw/usb/hcd-ehci.c | 2 +- > hw/usb/redirect.c | 2 +- > hw/xen/xen-hvm-common.c | 2 +- > include/migration/snapshot.h | 7 ++ > include/sysemu/runstate.h | 16 ++++ > migration/global_state.c | 35 ++++++- > migration/migration-hmp-cmds.c | 8 +- > migration/migration.c | 15 +-- > migration/savevm.c | 23 +++-- > qapi/misc.json | 10 +- > system/cpus.c | 47 +++++++-- > system/runstate.c | 9 ++ > system/vl.c | 2 + > tests/migration/i386/Makefile | 5 +- > tests/migration/i386/a-b-bootblock.S | 50 +++++++++- > tests/migration/i386/a-b-bootblock.h | 26 +++-- > tests/qtest/migration-helpers.c | 27 ++---- > tests/qtest/migration-helpers.h | 11 ++- > tests/qtest/migration-test.c | 181 +++++++++++++++++++++++++---------- > 20 files changed, 354 insertions(+), 126 deletions(-) >