[GIT PULL] paravirt_ops and xen updates for 2.6.24

[GIT PULL] paravirt_ops and xen updates for 2.6.24

[Jeremy Fitzhardinge]

Hi Linus,

Please pull:

  ssh://master.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git xen-upstream

This contains updates for arch/x86 paravirt_ops and Xen.

A quick overview of the patchset:

paravirt_ops:
	Remove the monolithic paravirt_ops structure, and replace it with
	smaller structures of related functions.  Also, clean up the handling
	of lazy mode to make it easier to implement.

x86/mm/init.c: remove a chunk of dead code

Xen:
	- remove duplicate includes
	- yield if the target vcpu of an IPI is not currently running
	- add post-batch callbacks for multicalls [*]
	- deal with unpinning pagetables when another vcpu still
	  has a cr3 reference [*]
	- deal with split ptelocks by pinning each pte page
	  separately under lock
	- determine the kernel/hypervisor address split dynamically
	- use the right arg structure for register_vcpu_info [*]
	- add extra debugging output for failed multicalls

XFS:
	- eagerly unmap vmapped areas to avoid confict with Xen [*]

[*] bugfix needed for 2.6.23.  I've also cc:d them to stable@kernel.org

Diffstat:
 arch/x86/kernel/alternative.c         |    4 
 arch/x86/kernel/asm-offsets_32.c      |   14 
 arch/x86/kernel/entry_32.S            |    2 
 arch/x86/kernel/paravirt_32.c         |  234 ++++++++-----
 arch/x86/kernel/vmi_32.c              |  211 ++++++------
 arch/x86/mm/init_32.c                 |   22 -
 arch/x86/xen/enlighten.c              |  295 +++++++++-------
 arch/x86/xen/mmu.c                    |  149 ++++++--
 arch/x86/xen/multicalls.c             |   52 ++
 arch/x86/xen/multicalls.h             |    5 
 arch/x86/xen/smp.c                    |   14 
 arch/x86/xen/time.c                   |    6 
 arch/x86/xen/xen-ops.h                |   10 
 drivers/char/hvc_lguest.c             |    2 
 drivers/lguest/core.c                 |    6 
 drivers/lguest/lguest.c               |  154 ++++----
 drivers/lguest/lguest_bus.c           |    2 
 fs/xfs/linux-2.6/xfs_buf.c            |   13 
 include/asm-x86/paravirt.h            |  507 ++++++++++++++++-------------
 include/asm-x86/pgtable-3level-defs.h |    2 
 include/xen/interface/vcpu.h          |    5 
 mm/Kconfig                            |    1 
 22 files changed, 1027 insertions(+), 683 deletions(-)

Thanks,
	J

Re: [GIT PULL] paravirt_ops and xen updates for 2.6.24

[Jeremy Fitzhardinge]

Jeremy Fitzhardinge wrote:
> Hi Linus,
>   

Ping?

> Please pull:
>
>   ssh://master.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git xen-upstream
>
> This contains updates for arch/x86 paravirt_ops and Xen.
>
> A quick overview of the patchset:
>
> paravirt_ops:
> 	Remove the monolithic paravirt_ops structure, and replace it with
> 	smaller structures of related functions.  Also, clean up the handling
> 	of lazy mode to make it easier to implement.
>
> x86/mm/init.c: remove a chunk of dead code
>
> Xen:
> 	- remove duplicate includes
> 	- yield if the target vcpu of an IPI is not currently running
> 	- add post-batch callbacks for multicalls [*]
> 	- deal with unpinning pagetables when another vcpu still
> 	  has a cr3 reference [*]
> 	- deal with split ptelocks by pinning each pte page
> 	  separately under lock
> 	- determine the kernel/hypervisor address split dynamically
> 	- use the right arg structure for register_vcpu_info [*]
> 	- add extra debugging output for failed multicalls
>
> XFS:
> 	- eagerly unmap vmapped areas to avoid confict with Xen [*]
>
> [*] bugfix needed for 2.6.23.  I've also cc:d them to stable@kernel.org
>
> Diffstat:
>  arch/x86/kernel/alternative.c         |    4 
>  arch/x86/kernel/asm-offsets_32.c      |   14 
>  arch/x86/kernel/entry_32.S            |    2 
>  arch/x86/kernel/paravirt_32.c         |  234 ++++++++-----
>  arch/x86/kernel/vmi_32.c              |  211 ++++++------
>  arch/x86/mm/init_32.c                 |   22 -
>  arch/x86/xen/enlighten.c              |  295 +++++++++-------
>  arch/x86/xen/mmu.c                    |  149 ++++++--
>  arch/x86/xen/multicalls.c             |   52 ++
>  arch/x86/xen/multicalls.h             |    5 
>  arch/x86/xen/smp.c                    |   14 
>  arch/x86/xen/time.c                   |    6 
>  arch/x86/xen/xen-ops.h                |   10 
>  drivers/char/hvc_lguest.c             |    2 
>  drivers/lguest/core.c                 |    6 
>  drivers/lguest/lguest.c               |  154 ++++----
>  drivers/lguest/lguest_bus.c           |    2 
>  fs/xfs/linux-2.6/xfs_buf.c            |   13 
>  include/asm-x86/paravirt.h            |  507 ++++++++++++++++-------------
>  include/asm-x86/pgtable-3level-defs.h |    2 
>  include/xen/interface/vcpu.h          |    5 
>  mm/Kconfig                            |    1 
>  22 files changed, 1027 insertions(+), 683 deletions(-)
>
> Thanks,
> 	J
>
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Re: [GIT PULL] paravirt_ops and xen updates for 2.6.24

[Ingo Molnar]

* Jeremy Fitzhardinge <jeremy@goop.org> wrote:

> Jeremy Fitzhardinge wrote:
> > Hi Linus,
> >   
> 
> Ping?
> 
> > Please pull:
> >
> >   ssh://master.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git xen-upstream
> >
> > This contains updates for arch/x86 paravirt_ops and Xen.

hm, could we do the arch/x86 changes via the arch/x86 tree instead? 
We've got about a 100 patches pending there now, under QA, preparing 
them for pushout. Will check your paravirt patches too, ok?

	Ingo

Re: [GIT PULL] paravirt_ops and xen updates for 2.6.24

[Thomas Gleixner]

On Wed, 17 Oct 2007, Ingo Molnar wrote:
> * Jeremy Fitzhardinge <jeremy@goop.org> wrote:
> > > Hi Linus,
> > >   
> > 
> > Ping?
> > 
> > > Please pull:
> > >
> > >   ssh://master.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git xen-upstream
> > >
> > > This contains updates for arch/x86 paravirt_ops and Xen.
> 
> hm, could we do the arch/x86 changes via the arch/x86 tree instead? 
> We've got about a 100 patches pending there now, under QA, preparing 
> them for pushout. Will check your paravirt patches too, ok?

Yeah, I'm fixing merge conflicts the third time today :)

      tglx

Re: [GIT PULL] paravirt_ops and xen updates for 2.6.24

[Jeremy Fitzhardinge]

Ingo Molnar wrote:
> hm, could we do the arch/x86 changes via the arch/x86 tree instead? 
> We've got about a 100 patches pending there now, under QA, preparing 
> them for pushout. Will check your paravirt patches too, ok?

Yep, that's fine.

    J

Re: [GIT PULL] paravirt_ops and xen updates for 2.6.24

[Thomas Gleixner]

On Wed, 17 Oct 2007, Jeremy Fitzhardinge wrote:

> Ingo Molnar wrote:
> > hm, could we do the arch/x86 changes via the arch/x86 tree instead? 
> > We've got about a 100 patches pending there now, under QA, preparing 
> > them for pushout. Will check your paravirt patches too, ok?
> 
> Yep, that's fine.

I just pulled your tree on top of my tip and there are no conflicts. I
checked the diffs and there is nothing, which is conflicting with our
backlogs.

Linus, please go ahead and pull it yourself.

Thanks,

	tglx

Re: [GIT PULL] paravirt_ops and xen updates for 2.6.24

[Linus Torvalds]

On Wed, 17 Oct 2007, Thomas Gleixner wrote:
> 
> Linus, please go ahead and pull it yourself.

Heh. I had already done so.

Sometimes I'm tardy and miss things for weeks and need prodding, and 
sometimes I pull almost before you've sent the "please pull" message. 

I'm unpredictable. Or keeping you on your toes. Or incompetent. Pick 
whatever suits your mood ;)

		Linus