thr3ads.net - Xen users - [Xen-devel] Proposed patches for Linux 3.1 kernel. [Jul 2011]

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Konrad Rzeszutek Wilk

2011-Jul-21 14:17 UTC

[Xen-devel] Proposed patches for Linux 3.1 kernel.

The 3.0 is suppose to be released today, or perhaps tomorrow.

For 3.1 kernel we have this long list of features and bug-fixes that we are
going
to ask Linus to pick up:

 - VGA text support. Since Xen is the first payload on the bootloader it gets
the
   screen information - now with this patch we can copy it from the hypervisor
   and enjoy 80x25 old-school text output.
 - MODULE_ALIAS on backends so that udev will autoload them.
 - tmem driver to shuffle file-system and swap pages between guests as
appropiate.
   Runtime it is disabled unless ''tmem'' parameter is supplied.
 - self balloon driver to decrease memory in the guest and make the swap pages
   be shuffled by tmem to be compressed/shared/etc. Runtime wise it is disabled
   by default (use ''selfballooning'' to enable it and make sure
you have a swap disk).
 - pciback backend. It complements the xen pci front driver which together
   allow guests to have host''s PCI devices.
 - cleaning up the Xen PCI glue code.
 - Fix section mismatch in Xen PCI HVM driver (xen-pci-platform).
 - Fixes to the generic pagetable to compute precisely how many pages we need.
 - blkback can now provide completion latency that follows the
hardware''s completion
   latency.
 - PVonHVM blkfront naming fixes.
 - Xen MMU debugfs has gotten a facelift - now it uses the tracing API.

Please tell me or Jeremy if we are missing anything or need to chase something
down.

Here is the full credit list:

Anupam Chanda (1):
      x86, hyper: Change hypervisor detection order

Bastian Blank (4):
      xen: Populate xenbus device attributes
      xen: Add module alias to autoload backend drivers
      xen/blkback: Add module alias for autoloading
      xen/netback: Add module alias for autoloading

Dan Magenheimer (2):
      xen: prepare tmem shim to handle frontswap
      xen: tmem: self-ballooning and frontswap-selfshrinking

Daniel Stodden (1):
      xen/blkback: Don''t let in-flight requests defer pending ones.

Ian Campbell (1):
      xen: rename pciback module to xen-pciback.

Jeremy Fitzhardinge (18):
      xen: allow enable use of VGA console on dom0
      trace/xen: add skeleton for Xen trace events
      xen/multicalls: remove debugfs stats
      xen/trace: set up tracepoint skeleton
      xen/trace: add multicall tracing
      xen/trace: add mmu tracepoints
      xen/trace: add ptpage alloc/release tracepoints
      xen/trace: add xen_pgd_(un)pin tracepoints
      xen/trace: add segment desc tracing
      xen/trace: add tlb flush tracepoints
      xen/mmu: use extend_args for more mmuext updates
      xen/mmu: tune pgtable alloc/release
      xen/multicalls: disable MC_DEBUG
      xen/multicalls: add unlikely around slowpath in __xen_mc_entry()
      xen/multicall: special-case singleton hypercalls
      xen/multicall: move *idx fields to start of mc_buffer
      xen/trace: convert mmu events to use DECLARE_EVENT_CLASS()/DEFINE_EVENT()
      xen/trace: use class for multicall trace

Joe Perches (1):
      xen: Add __attribute__((format(printf... where appropriate

Konrad Rzeszutek Wilk (21):
      xen/pci: Shuffle code around.
      xen/pci: Update comments and fix empty spaces.
      xen/pci: Provide #ifdef CONFIG_ACPI to easy code squashing.
      xen/pci: In xen_register_pirq bind the GSI to the IRQ after the hypercall.
      xen/pci: Use the xen_register_pirq for HVM and initial domain users
      xen/pci: Squash pci_xen_initial_domain and xen_setup_pirqs together.
      xen/pci: Move the allocation of IRQs when there are no IOAPIC''s
to the end
      xen/pci: Retire unnecessary #ifdef CONFIG_ACPI
      xen/pci: Remove ''xen_allocate_pirq_gsi''.
      xen/pci: Use ''acpi_gsi_to_irq'' value unconditionally.
      xen/pciback: xen pci backend driver.
      xen/pciback: Cleanup the driver based on checkpatch warnings and errors.
      xen/pciback: Register the owner (domain) of the PCI device.
      xen/pciback: Disable MSI/MSI-X when reseting a device
      xen/pciback: Allocate IRQ handler for device that is shared with guest.
      xen/pciback: Fine-grain the spinlocks and fix BUG: scheduling while atomic
cases.
      xen/pciback: Don''t setup an fake IRQ handler for SR-IOV devices.
      xen/pciback: Print out the MSI/MSI-X (PIRQ) values
      xen/pciback: Drop two backends, squash and cleanup some code.
      xen/pciback: Remove the DEBUG option.
      xen/pciback: Have ''passthrough'' option instead of
XEN_PCIDEV_BACKEND_PASS and XEN_PCIDEV_BACKEND_VPCI

Raghavendra D Prabhu (1):
      xen:pvhvm: Modpost section mismatch fix

Stefan Bader (2):
      xen-blkfront: Drop name and minor adjustments for emulated scsi devices
      xen-blkfront: Fix one off warning about name clash

Stefano Stabellini (4):
      x86, mm: Calculate precisely the memory needed by init_memory_mapping
      Revert "x86,xen: introduce x86_init.mapping.pagetable_reserve"
      x86, init : Move memblock_x86_reserve_range PGTABLE to
find_early_table_space
      x86-64, mm: Do not assume head_64.S used 4KB pages when !use_pse

Zhao, Yu (1):
      xen/pciback: guest SR-IOV support for PV guest


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Sander Eikelenboom

2011-Jul-21 14:43 UTC

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Re: [Xen-devel] Proposed patches for Linux 3.1 kernel.

Thursday, July 21, 2011, 4:17:15 PM, you wrote:
> The 3.0 is suppose to be released today, or perhaps tomorrow.
> For 3.1 kernel we have this long list of features and bug-fixes that we are
going
> to ask Linus to pick up:
>  - VGA text support. Since Xen is the first payload on the bootloader it
gets the
>    screen information - now with this patch we can copy it from the
hypervisor
>    and enjoy 80x25 old-school text output.
I assume this one will be proposed for 3.0.1 stable as well ?

>  - MODULE_ALIAS on backends so that udev will autoload them.
>  - tmem driver to shuffle file-system and swap pages between guests as
appropiate.
>    Runtime it is disabled unless ''tmem'' parameter is
supplied.
>  - self balloon driver to decrease memory in the guest and make the swap
pages
>    be shuffled by tmem to be compressed/shared/etc. Runtime wise it is
disabled
>    by default (use ''selfballooning'' to enable it and make
sure you have a swap disk).
>  - pciback backend. It complements the xen pci front driver which together
>    allow guests to have host''s PCI devices.
>  - cleaning up the Xen PCI glue code.
>  - Fix section mismatch in Xen PCI HVM driver (xen-pci-platform).
>  - Fixes to the generic pagetable to compute precisely how many pages we
need.
>  - blkback can now provide completion latency that follows the
hardware''s completion
>    latency.
>  - PVonHVM blkfront naming fixes.
>  - Xen MMU debugfs has gotten a facelift - now it uses the tracing API.
> Please tell me or Jeremy if we are missing anything or need to chase
something down.


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Konrad Rzeszutek Wilk

2011-Jul-21 17:59 UTC

head link

Re: [Xen-devel] Proposed patches for Linux 3.1 kernel.

On Thu, Jul 21, 2011 at 04:43:59PM +0200, Sander Eikelenboom
wrote:> Thursday, July 21, 2011, 4:17:15 PM, you wrote:
> 
> > The 3.0 is suppose to be released today, or perhaps tomorrow.
> 
> > For 3.1 kernel we have this long list of features and bug-fixes that
we are going
> > to ask Linus to pick up:
> 
> >  - VGA text support. Since Xen is the first payload on the bootloader
it gets the
> >    screen information - now with this patch we can copy it from the
hypervisor
> >    and enjoy 80x25 old-school text output.
> 
> I assume this one will be proposed for 3.0.1 stable as well ?
Sadly no - it is considered a feature - and those (as I understand, maybe I am
incorrect?) don''t go on the stable wagon.

The vga patch is self-contained in here: http://darnok.org/xen/vga.patch if you
would
like to patch your 3.0 kernel. Keep in mind - that you can still run stock 3.0 -
with Xorg,
frame-buffer support (KMS), or with serial output.

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Jeremy Fitzhardinge

2011-Jul-21 19:04 UTC

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Re: [Xen-devel] Proposed patches for Linux 3.1 kernel.

On 07/21/2011 10:59 AM, Konrad Rzeszutek Wilk wrote:> On Thu, Jul 21, 2011 at 04:43:59PM +0200, Sander Eikelenboom wrote:
>> Thursday, July 21, 2011, 4:17:15 PM, you wrote:
>>
>>> The 3.0 is suppose to be released today, or perhaps tomorrow.
>>> For 3.1 kernel we have this long list of features and bug-fixes
that we are going
>>> to ask Linus to pick up:
>>>  - VGA text support. Since Xen is the first payload on the
bootloader it gets the
>>>    screen information - now with this patch we can copy it from the
hypervisor
>>>    and enjoy 80x25 old-school text output.
>> I assume this one will be proposed for 3.0.1 stable as well ?
> Sadly no - it is considered a feature - and those (as I understand, maybe I
am
> incorrect?) don''t go on the stable wagon.
Eh, I think its probably fairly justifyable for stable, since its
completely self-contained and can''t cause any regressions.  Its akin to
adding a new driver.  Wouldn''t want to argue it for a late -rc, but
stable backport is probably OK.
> The vga patch is self-contained in here: http://darnok.org/xen/vga.patch if
you would
> like to patch your 3.0 kernel. Keep in mind - that you can still run stock
3.0 - with Xorg,
> frame-buffer support (KMS), or with serial output.
What git branch is that on?

    J

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Konrad Rzeszutek Wilk

2011-Jul-22 03:30 UTC

head link

Re: [Xen-devel] Proposed patches for Linux 3.1 kernel.

On Thu, Jul 21, 2011 at 12:04:16PM -0700, Jeremy Fitzhardinge
wrote:> On 07/21/2011 10:59 AM, Konrad Rzeszutek Wilk wrote:
> > On Thu, Jul 21, 2011 at 04:43:59PM +0200, Sander Eikelenboom wrote:
> >> Thursday, July 21, 2011, 4:17:15 PM, you wrote:
> >>
> >>> The 3.0 is suppose to be released today, or perhaps tomorrow.
> >>> For 3.1 kernel we have this long list of features and
bug-fixes that we are going
> >>> to ask Linus to pick up:
> >>>  - VGA text support. Since Xen is the first payload on the
bootloader it gets the
> >>>    screen information - now with this patch we can copy it
from the hypervisor
> >>>    and enjoy 80x25 old-school text output.
> >> I assume this one will be proposed for 3.0.1 stable as well ?
> > Sadly no - it is considered a feature - and those (as I understand,
maybe I am
> > incorrect?) don''t go on the stable wagon.
> 
> Eh, I think its probably fairly justifyable for stable, since its
> completely self-contained and can''t cause any regressions.  Its
akin to
> adding a new driver.  Wouldn''t want to argue it for a late -rc,
but
> stable backport is probably OK.
> 
> > The vga patch is self-contained in here:
http://darnok.org/xen/vga.patch if you would
> > like to patch your 3.0 kernel. Keep in mind - that you can still run
stock 3.0 - with Xorg,
> > frame-buffer support (KMS), or with serial output.
> 
> What git branch is that on?
stable/vga.support.

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Xen users - Jul 2011 - Proposed patches for Linux 3.1 kernel.

[Xen-devel] Proposed patches for Linux 3.1 kernel.

Re: [Xen-devel] Proposed patches for Linux 3.1 kernel.

Re: [Xen-devel] Proposed patches for Linux 3.1 kernel.

Re: [Xen-devel] Proposed patches for Linux 3.1 kernel.

Re: [Xen-devel] Proposed patches for Linux 3.1 kernel.