[Qemu-devel] Re: [PATCH 0/8] kvm: Fixes, cleanups and live migration

[Anthony Liguori]

Jan Kiszka wrote:
> Besides refreshed versions of my already posted fixes and cleanups for
> KVM, this series comes with patches to enable live migration in KVM
> mode. If there is still some migration bit missing compared to qemu-kvm,
> please let me know.
>   

In qemu-kvm, we also save:

MSR_IA32_TSC
mp_state
interrupt_bitmap

In QEMU, we probably should just emulate MSR_IA32_TSC and then we can 
reuse that for save/restore.

interrupt_bitmap is a bit more tricky.  It only ever can have one bit 
set AFAICT but I don't see anything that we're currently saving that 
maps to it which leads me to wonder why KVM needs it and QEMU doesn't.

Regards,

Anthony Liguori

> Find the patches also at git://git.kiszka.org/qemu.git queues/kvm
>
> Jan Kiszka (8):
>       kvm: Conditionally apply workaround for KVM slot handling bug
>       kvm: Introduce kvm_set_migration_log
>       kvm: Fix dirty log temporary buffer size
>       kvm: Rework dirty bitmap synchronization
>       kvm: Add missing bits to support live migration
>       kvm: Fix framebuffer dirty log sync
>       Introduce reset notifier order
>       kvm: Rework VCPU reset
>
>  cpu-all.h             |    3 +-
>  exec.c                |   14 ++++-
>  hw/ac97.c             |    2 +-
>  hw/acpi.c             |    2 +-
>  hw/adb.c              |    2 +-
>  hw/apic.c             |    2 +-
>  hw/arm_boot.c         |    2 +-
>  hw/axis_dev88.c       |    2 +-
>  hw/cirrus_vga.c       |    2 +-
>  hw/cs4231.c           |    2 +-
>  hw/cs4231a.c          |    2 +-
>  hw/cuda.c             |    2 +-
>  hw/dma.c              |    2 +-
>  hw/dp8393x.c          |    2 +-
>  hw/eccmemctl.c        |    2 +-
>  hw/eepro100.c         |    2 +-
>  hw/es1370.c           |    2 +-
>  hw/escc.c             |    4 +-
>  hw/esp.c              |    2 +-
>  hw/etraxfs.c          |    2 +-
>  hw/etraxfs_timer.c    |    2 +-
>  hw/fdc.c              |    2 +-
>  hw/framebuffer.c      |    5 +--
>  hw/fw_cfg.c           |    2 +-
>  hw/g364fb.c           |    2 +-
>  hw/grackle_pci.c      |    2 +-
>  hw/heathrow_pic.c     |    2 +-
>  hw/hpet.c             |    2 +-
>  hw/hw.h               |    2 +-
>  hw/i8254.c            |    2 +-
>  hw/i8259.c            |    2 +-
>  hw/ide.c              |    8 ++--
>  hw/ioapic.c           |    2 +-
>  hw/iommu.c            |    2 +-
>  hw/lm832x.c           |    2 +-
>  hw/m48t59.c           |    2 +-
>  hw/mac_dbdma.c        |    2 +-
>  hw/mac_nvram.c        |    2 +-
>  hw/mips_jazz.c        |    2 +-
>  hw/mips_malta.c       |    4 +-
>  hw/mips_mipssim.c     |    2 +-
>  hw/mips_r4k.c         |    2 +-
>  hw/musicpal.c         |    4 +-
>  hw/nseries.c          |    2 +-
>  hw/omap1.c            |    2 +-
>  hw/omap2.c            |    2 +-
>  hw/openpic.c          |    4 +-
>  hw/parallel.c         |    4 +-
>  hw/pc.c               |    2 +-
>  hw/pckbd.c            |    4 +-
>  hw/pl181.c            |    2 +-
>  hw/ppc405_boards.c    |    4 +-
>  hw/ppc405_uc.c        |   24 ++++----
>  hw/ppc4xx_devs.c      |    6 +-
>  hw/ppc4xx_pci.c       |    2 +-
>  hw/ppc_newworld.c     |    2 +-
>  hw/ppc_oldworld.c     |    2 +-
>  hw/ppc_prep.c         |    2 +-
>  hw/ps2.c              |    4 +-
>  hw/rc4030.c           |    2 +-
>  hw/sbi.c              |    2 +-
>  hw/serial.c           |    2 +-
>  hw/slavio_intctl.c    |    2 +-
>  hw/slavio_misc.c      |    2 +-
>  hw/slavio_timer.c     |    2 +-
>  hw/sparc32_dma.c      |    2 +-
>  hw/sun4c_intctl.c     |    2 +-
>  hw/sun4m.c            |   10 ++--
>  hw/sun4u.c            |    2 +-
>  hw/tcx.c              |    2 +-
>  hw/tsc2005.c          |    2 +-
>  hw/tsc210x.c          |    4 +-
>  hw/unin_pci.c         |    2 +-
>  hw/usb-ohci.c         |    2 +-
>  hw/vga.c              |    2 +-
>  hw/virtio.c           |    2 +-
>  kvm-all.c             |  139 +++++++++++++++++++++++++++++++++++--------------
>  kvm.h                 |    5 +-
>  target-i386/machine.c |    4 ++
>  target-ppc/machine.c  |    5 ++
>  vl.c                  |   16 ++++--
>  81 files changed, 240 insertions(+), 155 deletions(-)
>
>
>
>   


--
Regards,

Anthony Liguori