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2011-10-21qemu-timer: remove active_timers arrayPaolo Bonzini1-31/+28
Embed the list in the QEMUClock instead. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2011-10-21remove unused functionPaolo Bonzini2-6/+0
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2011-10-20hw/9pfs: Fix broken compilation caused by wrong trace eventsStefan Weil1-4/+4
Commit c572f23a3e7180dbeab5e86583e43ea2afed6271 added trace events with mismatching format string and arguments. gcc reports these errors: In file included from trace.c:2:0: trace.h: In function ‘trace_v9fs_attach’: trace.h:2850:9: error: too many arguments for format [-Werror=format-extra-args] trace.h: In function ‘trace_v9fs_wstat’: trace.h:3039:9: error: too many arguments for format [-Werror=format-extra-args] trace.h: In function ‘trace_v9fs_mkdir’: trace.h:3088:9: error: too many arguments for format [-Werror=format-extra-args] trace.h: In function ‘trace_v9fs_mkdir_return’: trace.h:3095:9: error: too many arguments for format [-Werror=format-extra-args] Fix the format strings and also use %u instead of %d for unsigned values in the changed strings. There are more minor errors of this kind which I did not fix because that would make the review more difficult. v2: Fixed position of } for v9fs_mkdir_return. Cc: Harsh Prateek Bora <harsh@linux.vnet.ibm.com> Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20Merge remote-tracking branch 'quintela/migration-pull' into stagingAnthony Liguori13-598/+550
2011-10-20Merge remote-tracking branch 'qemu-kvm-tmp/memory/batch' into stagingAnthony Liguori22-649/+544
2011-10-20Merge remote-tracking branch 'aneesh/for-upstream-6' into stagingAnthony Liguori22-883/+852
Conflicts: trace-events
2011-10-20migration: make migration-{tcp,unix} consistentJuan Quintela2-26/+35
Files are almost identical in functionality, just remove the differences that make no sense. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: propagate error correctlyJuan Quintela2-25/+21
unix and tcp outgoing migration have error values, but didn't returned it. Make them return the error. Notice that EINPROGRESS & EWOULDBLOCK are not considered errors as call will be retry later. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: Don't use callback on file defining itJuan Quintela2-5/+5
Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: Make state definitions localJuan Quintela2-8/+8
Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: Export a function that tells if the migration has finished correctlyJuan Quintela3-5/+5
This will allow us to hide the state values. Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: Pass MigrationState in migration notifiersJuan Quintela1-4/+4
Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: Use bandwidth_limit directlyJuan Quintela1-7/+8
Now that current_migration always exist, there is no reason for max_throotle variable. Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: create accessor for current_migrationJuan Quintela1-61/+55
Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: Move exported functions to the end of the fileJuan Quintela1-96/+91
This means we can remove the two forward declarations. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: Remove migration cancel() callbackJuan Quintela2-6/+4
It is used only in one place Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: Remove get_status() accessorJuan Quintela2-12/+5
It is only used inside migration.c, and fields on that struct are accessed all around the place on that file. Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: Our release callback was just freeJuan Quintela2-19/+1
We called it from a single place, and always with state != MIG_STATE_ACTIVE. Just remove the whole callback. For users of the notifier, notice that this is exactly the case where they don't care, we are just freeing the state from previous failed migration (it can't be a sucessful one, otherwise we would not be running on that machine in the first place). Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: Introduce migrate_fd_completed() for consistencyJuan Quintela1-7/+13
This function is a bit different of the others that change the state, in the sense that if migrate_fd_cleanup() returns an error, it set the status to error, not completed. Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: Refactor and simplify error checking in migrate_fd_put_readyJuan Quintela1-11/+10
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: Introduce MIG_STATE_SETUPJuan Quintela2-5/+12
Use MIG_STATE_ACTIVE only when migration has really started. Use this new state to setup migration parameters. Change defines for an anonymous struct. Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: move migrate_new to do_migrateJuan Quintela6-100/+46
Once there, remove all parameters that don't need to be passed to *start_outgoing_migration() functions Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: Make all posible migration functions staticJuan Quintela2-48/+36
I have to move two functions postions to avoid forward declarations Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: Refactor MigrationState creationJuan Quintela6-70/+32
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: Rename FdMigrationState MigrationStateJuan Quintela6-58/+58
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: Fold MigrationState into FdMigrationStateJuan Quintela6-46/+31
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: Use FdMigrationState instead of MigrationState when possibleJuan Quintela2-26/+24
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: Make *start_outgoing_migration return FdMigrationStateJuan Quintela6-14/+14
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: make *save_live return errorsJuan Quintela3-11/+29
Make *save_live() return negative values when there is one error, and updates all callers to check for the error. Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: use qemu_file_get_error() return value when possibleJuan Quintela4-16/+24
Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20savevm: Rename has_error to last_error fieldJuan Quintela1-8/+8
Now the field contains the last error name, so rename acordingly. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: rename qemu_file_has_error to qemu_file_get_errorJuan Quintela6-20/+21
Now the function returned errno, so it is better the new name. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: return real error codeJuan Quintela2-19/+26
make functions propagate errno, instead of just using -EIO. Add a comment about what are the return value of qemu_savevm_state_iterate(). Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: change has_error to contain errno valuesJuan Quintela6-14/+15
We normally already have an errno value. When not, abuse EIO. Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: set error if select return one errorJuan Quintela1-0/+4
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: don't "write" when migration is not activeJuan Quintela1-0/+4
If migration is not active, just ignore writes. Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20buffered_file: reuse QEMUFile has_error fieldJuan Quintela1-9/+8
Instead of having two has_error fields in QEMUFile & QEMUBufferedFile, reuse the 1st one. Notice that the one in buffered_file is only set after a file operation. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20buffered_file: Use right "opaque"Juan Quintela1-1/+1
buffered_close 's' variable is of type QEMUFileBuffered, and wait_for_unfreeze() expect to receive a MigrationState, that 'coincidentaly' is s->opaque. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: If there is one error, it makes no sense to continueJuan Quintela1-3/+9
Once there, add a comment about what each error mean. Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20migration: add error handling to migrate_fd_put_notify().Yoshiaki Tamura1-3/+3
Although migrate_fd_put_buffer() sets MIG_STATE_ERROR if it failed, since migrate_fd_put_notify() isn't checking error of underlying QEMUFile, those resources are kept open. This patch checks it and calls migrate_fd_error() in case of error. Signed-off-by: Yoshiaki Tamura <tamura.yoshiaki@lab.ntt.co.jp> Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: Check that migration is active before cancel itJuan Quintela1-2/+2
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20migration: simplify state assignmenteJuan Quintela1-7/+4
Once there, make sure that if we already know that there is one error, just call migration_fd_cleanup() with the ERROR state. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20ds1225y: Use stdio instead of QEMUFileJuan Quintela1-12/+16
QEMUFile * is only intended for migration nowadays. Using it for anything else just adds pain and a layer of buffers for no good reason. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20Revert "savevm: fix corruption in vmstate_subsection_load()."Juan Quintela1-9/+1
This reverts commit eb60260de0b050a5e8ab725e84d377d0b44c43ae. Conflicts: savevm.c We changed qemu_peek_byte() prototype, just fixed the rejects. Signed-off-by: Juan Quintela<quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20savevm: improve subsections detection on loadJuan Quintela1-35/+75
We add qemu_peek_buffer, that is identical to qemu_get_buffer, just that it don't update f->buf_index. We add a paramenter to qemu_peek_byte() to be able to peek more than one byte. Once this is done, to see if we have a subsection we look: - 1st byte is QEMU_VM_SUBSECTION - 2nd byte is a length, and is bigger than section name - 3rd element is a string that starts with section_name So, we shouldn't have false positives (yes, content could still get us wrong but probabilities are really low). v2: - Alex Williamsom found that we could get negative values on index. - Rework code to fix that part. - Rewrite qemu_get_buffer() using qemu_peek_buffer() v3: - return "done" on error case v4: - fix qemu_file_skip() off by one. Signed-off-by: Juan Quintela <quintela@redhat.com>
2011-10-20savevm: define qemu_get_byte() using qemu_peek_byte()Juan Quintela1-9/+6
Signed-off-by: Juan Quintela<quintela@redhat.com>
2011-10-20savevm: some coding style cleanupsJuan Quintela1-7/+14
This patch will make moving code on next patches and having checkpatch happy easier. Signed-off-by: Juan Quintela<quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-20savevm: teach qemu_fill_buffer to do partial refillsJuan Quintela1-3/+11
We will need on next patch to be able to lookahead on next patch v2: rename "used" to "pending" (Alex Williams) Signed-off-by: Juan Quintela<quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-19runstate: Allow user to migrate twiceLuiz Capitulino4-3/+20
It should be a matter of allowing the transition POSTMIGRATE -> FINISH_MIGRATE, but it turns out that the VM won't do the transition the second time because it's already stopped. So this commit also adds vm_stop_force_state() which performs the transition even if the VM is already stopped. While there also allow other states to migrate. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-10-19savevm: qemu_savevm_state(): Drop stop VM logicLuiz Capitulino1-7/+0
qemu_savevm_state() has some logic to stop the VM and to (or not to) resume it. But this seems to be a big noop, as qemu_savevm_state() is only called by do_savevm() when the VM is already stopped. So, let's drop qemu_savevm_state()'s stop VM logic. Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>