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

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Wed, 2 Apr 2014, Wei Huang wrote:
> 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.

That's fantastic!


> > 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.

If you go ahead and resend his series, keep him as original author (by
using the From: line in the commit message) and of course add your
signed-off-by.


> > 
> > 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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