Previously posted series patches: http://lists.nongnu.org/archive/html/qemu-devel/2017-01/msg02324.html http://lists.nongnu.org/archive/html/qemu-devel/2017-01/msg01277.html http://lists.nongnu.org/archive/html/qemu-devel/2017-01/msg00320.html http://lists.nongnu.org/archive/html/qemu-devel/2016-12/msg02391.html http://lists.nongnu.org/archive/html/qemu-devel/2016-12/msg02062.html
This series adds a new command line option "--only-migratable" which will only allow addition of those devices to a QEMU instance which are migratable and do not abruptly fail QEMU after migration. Patch 1 is a preparatory patch to remove an undesirable comment and make patchew happy. Patch 2 adds the new option "-only-migratable". Patch 3 adds compatibility for various "device adding" options for both via command line and hotplug methods. Patch 4 helps to fail the migration blocker if the migration is already in progress and thus cannot be blocked. Note: This patch was originally written by John Snow and I have only made few changes. Patch 5 handles the special case of devices which become unmigratable dynamically by making call to "migrate_add_blocker". Here we fail the migration blocker if --only-migratable was specified. Eg: 9pfs fails to mount the filesystem. Note: I have not been able to test and compile the ARM drivers for KVM. They are: hw/intc/arm_gic_kvm.c hw/intc/arm_gicv3_its_kvm.c hw/intc/arm_gicv3_kvm.c Changes in v6: -make Error *local_err = NULL at some places -free reason at call sites -rebase -pass error_copy(reason) in error_propagate() Changes in v5: -drop =0 for global variable (Dave) -print error message if klass=NULL (Dave) -deal with migration blocker before pdu_marshal (Greg) -call migrate_add_blocker before kvm_create_device (Dave) -fix typo in subject line for 4/4 (Eric) -fix error_free in migrate_add_blocker (Dave) -make migrate_add_blocker to deal with error messages itself (Peter, Greg, Dave) Changes in v4: - drop diff in 9pfs for patch 4/4 - call clunk_fid() after freeing migration_blocker - drop ret and use err directly Changes in v3: - set s->root_fid after migrate_add_blocker - free migration_blocker inside v9fs_attach() - change back ret<0 to just ret - free local_err Changes in v2: - change the documentation for the new option - add a NULL check for ObjectClass - break patch 3 into patch 3 and 4 - use error_append_hint - return -EACCES for only-migratable - fix the error messages Ashijeet Acharya (5): block/vvfat: Remove the undesirable comment migration: Add a new option to enable only-migratable migration: Allow "device add" options to only add migratable devices migration: disallow migrate_add_blocker during migration migration: Fail migration blocker for --only-migratable block/qcow.c | 8 +++++++- block/vdi.c | 8 +++++++- block/vhdx.c | 17 +++++++++++------ block/vmdk.c | 9 ++++++++- block/vpc.c | 11 ++++++++--- block/vvfat.c | 20 ++++++++++++-------- hw/9pfs/9p.c | 33 +++++++++++++++++++++----------- hw/display/virtio-gpu.c | 32 ++++++++++++++++++------------- hw/intc/arm_gic_kvm.c | 17 +++++++++++------ hw/intc/arm_gicv3_its_kvm.c | 20 +++++++++++++------- hw/intc/arm_gicv3_kvm.c | 19 ++++++++++++------- hw/misc/ivshmem.c | 14 ++++++++++---- hw/scsi/vhost-scsi.c | 25 ++++++++++++++++++------ hw/usb/bus.c | 19 +++++++++++++++++++ hw/virtio/vhost.c | 8 +++++++- include/migration/migration.h | 10 +++++++++- migration/migration.c | 44 +++++++++++++++++++++++++++++++++++++++++-- qdev-monitor.c | 9 +++++++++ qemu-options.hx | 9 +++++++++ stubs/migr-blocker.c | 3 ++- target/i386/kvm.c | 16 +++++++++++++--- vl.c | 4 ++++ 22 files changed, 273 insertions(+), 82 deletions(-) -- 2.6.2
