Re: [Xen-devel] [PATCH RESEND v5 0/6] xen/arm: live migration support in arndale board

[Wei Huang <w1.huang@xxxxxxxxxxx>]

On 04/01/2014 02:39 PM, Julien Grall wrote:
> Hello Jaeyong,
>
> I remembered the patch series was in good shape (you may need to 
> rebase it on the latest master branch), do you plan to resend it?
I don't know about Jaeyong's progress. But I have back ported his 
patches, plus some fixes, to the latest Xen-unstable. Currently 
save/restore/migration for 32-bit guest VMs are working. 64-bit support 
is also under way and should be completed soon.
> It would be awesome to have migration support for ARM for 4.5 (AFAIK 
> the release is planned around august)
I can submit my version (with original signed-off intact). But given 
that Jaeyong Yoo and his team are the original author, I will wait for 
his reply. I think we should plan to support migration officially in 4.5 
release.
> Regards,
>
> On 08/11/13 07:50, Jaeyong Yoo wrote:
> > Note: Resend the patch series since the last one was white-space 
> > corrupted.
> > Hello!
> > here goes the v5 patch series. The major changes in this version are 
> > the following:
> >    1) Save and restore the vcpu-related registers in hvm context. (In 
> > patch 1)
> >    2) Rather than using set_memory_map hypercall use GUEST_RAM_BASE 
> > macro as the start
> >       of physical address of guest RAM and just let the hypervisor 
> > know the
> >       maximum memory of guest (In patch 2 and 6)
> >
> >    3) Use bitmap for temporary saving the dirty pages rather than 
> > linked list.
> >       (In patch 5)
> >
> >
> > Patch 1 implements hvm save/restore (including vcpu).
> >
> > Patch 2 implements 'get_maximum_gpfn' hypercall
> >
> > Patch 3 implements 'modify_returncode' for switching the return value 
> > of suspend hypercall from domU.
> > Patch 4 implements base functions for VLPT.
> >
> > Patch 5 implements dirty-page tracing by using VLPT.
> >
> > Patch 6 implements the toolstack part for live migration of ARM.
> >
> > NOTE: In this version, I do not use the p2m walker infrastructure for 
> > p2m_change_entry_type_global.
> > I think I can apply it after Stefanoâs patch is commited.
> >
> > Best,
> > Jaeyong
> >
> >
> > Alexey Sokolov (2):
> >    xen/arm: Implement modify_returncode
> >    xen/arm: Implement toolstack for xl restore/save and migrate
> >
> > Evgeny Fedotov (2):
> >    xen/arm: Implement hvm save and restore
> >    xen/arm: Implement get_maximum_gpfn hypercall for arm
> >
> > Jaeyong Yoo (2):
> >    xen/arm: Implement virtual-linear page table for guest p2m mapping in
> >      live migration
> >    xen/arm: Implement hypercall for dirty page tracing
> >
> >   config/arm32.mk                        |   1 +
> >   tools/libxc/Makefile                   |   6 +-
> >   tools/libxc/xc_arm_migrate.c           | 712 
> > +++++++++++++++++++++++++++++++++
> >   tools/libxc/xc_dom_arm.c               |   4 +-
> >   tools/libxc/xc_resume.c                |  25 ++
> >   tools/misc/Makefile                    |   4 +-
> >   xen/arch/arm/Makefile                  |   1 +
> >   xen/arch/arm/domain.c                  |  19 +
> >   xen/arch/arm/domctl.c                  |  98 ++++-
> >   xen/arch/arm/hvm.c                     | 464 ++++++++++++++++++++-
> >   xen/arch/arm/mm.c                      | 237 ++++++++++-
> >   xen/arch/arm/p2m.c                     | 206 ++++++++++
> >   xen/arch/arm/save.c                    |  66 +++
> >   xen/arch/arm/traps.c                   |   9 +
> >   xen/common/Makefile                    |   2 +
> >   xen/include/asm-arm/arm32/page.h       |  41 +-
> >   xen/include/asm-arm/config.h           |   5 +
> >   xen/include/asm-arm/domain.h           |  14 +
> >   xen/include/asm-arm/hvm/support.h      |  29 ++
> >   xen/include/asm-arm/mm.h               |  24 ++
> >   xen/include/asm-arm/p2m.h              |   4 +
> >   xen/include/asm-arm/processor.h        |   2 +
> >   xen/include/public/arch-arm/hvm/save.h | 130 ++++++
> >   23 files changed, 2084 insertions(+), 19 deletions(-)
> >   create mode 100644 tools/libxc/xc_arm_migrate.c
> >   create mode 100644 xen/arch/arm/save.c
> >   create mode 100644 xen/include/asm-arm/hvm/support.h

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