Re: [Qemu-devel] [PATCH v5 00/29] postcopy+vhost-user/shared ram

[Dr. David Alan Gilbert]

* Michael S. Tsirkin (address@hidden) wrote:
> On Mon, Mar 12, 2018 at 05:20:55PM +0000, Dr. David Alan Gilbert (git) wrote:
> > From: "Dr. David Alan Gilbert" <address@hidden>
> > 
> >   This set enables postcopy migration with shared memory to a vhost user 
> > process.
> > It's based off current head.
> >  
> >   Testing is mostly performed with dpdk, with corresponding modifications by
> > Maxime.
> >  
> >   v5 is mostly just fixes from comments received during review of v4.
> > The only notable one is that the 'advise' message no longer has any
> > data.
> 
> I plan to apply this. Could you pls rebase on top of
> pci branch in my tree? Or wait till it's merged and rebase.
> And pls fix the minor whitespace issue git warns about.

Yes, I'll post this as a v6 in a minute; the merge took a little
bit of cleanup on one patch.

Dave

> > Dave
> > 
> > Dr. David Alan Gilbert (29):
> >   migrate: Update ram_block_discard_range for shared
> >   qemu_ram_block_host_offset
> >   postcopy: use UFFDIO_ZEROPAGE only when available
> >   postcopy: Add notifier chain
> >   postcopy: Add vhost-user flag for postcopy and check it
> >   vhost-user: Add 'VHOST_USER_POSTCOPY_ADVISE' message
> >   libvhost-user: Support sending fds back to qemu
> >   libvhost-user: Open userfaultfd
> >   postcopy: Allow registering of fd handler
> >   vhost+postcopy: Register shared ufd with postcopy
> >   vhost+postcopy: Transmit 'listen' to slave
> >   postcopy+vhost-user: Split set_mem_table for postcopy
> >   migration/ram: ramblock_recv_bitmap_test_byte_offset
> >   libvhost-user+postcopy: Register new regions with the ufd
> >   vhost+postcopy: Send address back to qemu
> >   vhost+postcopy: Stash RAMBlock and offset
> >   vhost+postcopy: Helper to send requests to source for shared pages
> >   vhost+postcopy: Resolve client address
> >   postcopy: helper for waking shared
> >   postcopy: postcopy_notify_shared_wake
> >   vhost+postcopy: Add vhost waker
> >   vhost+postcopy: Call wakeups
> >   libvhost-user: mprotect & madvises for postcopy
> >   vhost-user: Add VHOST_USER_POSTCOPY_END message
> >   vhost+postcopy: Wire up POSTCOPY_END notify
> >   vhost: Huge page align and merge
> >   postcopy: Allow shared memory
> >   libvhost-user: Claim support for postcopy
> >   postcopy shared docs
> > 
> >  contrib/libvhost-user/libvhost-user.c | 302 ++++++++++++++++++++++++-
> >  contrib/libvhost-user/libvhost-user.h |  11 +
> >  docs/devel/migration.rst              |  41 ++++
> >  docs/interop/vhost-user.txt           |  52 +++++
> >  exec.c                                |  86 +++++--
> >  hw/virtio/trace-events                |  16 +-
> >  hw/virtio/vhost-user.c                | 411 
> > +++++++++++++++++++++++++++++++++-
> >  hw/virtio/vhost.c                     |  66 +++++-
> >  include/exec/cpu-common.h             |   4 +
> >  migration/migration.c                 |   6 +
> >  migration/migration.h                 |   4 +
> >  migration/postcopy-ram.c              | 354 +++++++++++++++++++++++------
> >  migration/postcopy-ram.h              |  73 ++++++
> >  migration/ram.c                       |   5 +
> >  migration/ram.h                       |   1 +
> >  migration/savevm.c                    |  13 ++
> >  migration/trace-events                |   6 +
> >  trace-events                          |   3 +-
> >  vl.c                                  |   2 +
> >  19 files changed, 1358 insertions(+), 98 deletions(-)
> > 
> > -- 
> > 2.14.3
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK