Xen devel - Feb 2013 - What went in Linux 3.6, 3.7 and 3.8 from Xen standpoint.

Hey,

I realized I hadn''t done my usual ''here is what goes
in'' for about half-a-year.

So catching up and doing it all at once.

v3.6:
 - Fix a lot of bugs: Systems with MP BIOS failing, Systems with ACPI NUMA
failing,
   FLR in xen-pciback leaving the devices unusable, 32-bit PCI sounds cards in
dom0
   not working, fix crashes when using acpidump, fix crashes with
CONFIG_MAX_DOMAIN_PAGES=512
 - Make the P2M interaction on MMIO ranges use less memory during booting
   (aka, Reuse existing P2M leafs).
 - Simplification and cleanups in the code base. Coverity fixes
 - Performance optimizations by caching TLS and GDT descriptors
 - Performance optimizations in PTE page manipulations
 - Xen MCE driver added (to see MCE events that Xen hypervisor gets)
 - Xen PCPU driver added (to online/offline physical CPUs via dom0)

v3.7:
 - Initial support for ARM working under Xen as both guest and initial domain.
 - Security fixes.
 - Fix RCU warning, add fallback code for old hypervisors, fix memory leaks in
   gntdev driver, fix some pvops calls failing, Fixes in
   xen-[kbd|fb|blk|net|hvc]-backend to deal with CLOSED transition
 - Allow xen/privcmd to use v2 of MMAPBATCH command (and fixes for it)
 - Support Xen backends to work with paged out grants (meaning work with HVM
   guests that have its memory paged out)
 - Performance optimization in xen/privcmd for migrating guests.
 - Performance improvements when doing kdump for PVonHVM guests.
 - Xen DBGP driver added (USB EHCI debug driver)
 - FLR support in xen-pciback.
 - Support wildcards in xen-pciback.hide=(*) argument parsing.
 - Xen EFI support, and keyboard shift status flag.
 - Late usage of Xen-SWIOTLB allowing PV PCI passthrough guest to boot without
   ''iommu=soft'' as an argument and late initialization of
SWIOTLB.
 - Support more than 128GB in a PV guest.
 - Cleanups in the initial pagetable creation.

v3.8:
 - Persistent feature grant in xen-block system allowing greater performance.
 - More fixes in the Xen-pciback for wildcard parsing
 - Xen Processor Aggregator Device (PAD) added.
 - Optimizations for xen/privcmd for ARM and PVH via new hypercall
(add_to_physmap_range)
 - Xen ARM can use the balloon driver
 - Fixes for vcpu onlining/offlining, grant table initialization, parsing of cpu
   onlining/offlining values, checks in xen-pciback, locking fixes in gtndev,
   fix stack corruptions, fix xen_iret checks. xen-pciback DoSing dom0 with
   messages, fix mmap batch ioctl error path.
 - Further enh to allow PVHVM backend drivers (so moving dom0 functionality in
guests)

>>> On 15.02.13 at 17:26, Konrad Rzeszutek Wilk
<konrad.wilk@oracle.com> wrote:
> v3.7:
>  - Initial support for ARM working under Xen as both guest and initial 
> domain.
>  - Security fixes.
>  - Fix RCU warning, add fallback code for old hypervisors, fix memory leaks
in
>    gntdev driver, fix some pvops calls failing, Fixes in
>    xen-[kbd|fb|blk|net|hvc]-backend to deal with CLOSED transition
>  - Allow xen/privcmd to use v2 of MMAPBATCH command (and fixes for it)
>  - Support Xen backends to work with paged out grants (meaning work with
HVM
>    guests that have its memory paged out)
>  - Performance optimization in xen/privcmd for migrating guests.
>  - Performance improvements when doing kdump for PVonHVM guests.
>  - Xen DBGP driver added (USB EHCI debug driver)
>  - FLR support in xen-pciback.
>  - Support wildcards in xen-pciback.hide=(*) argument parsing.
>  - Xen EFI support,
Where?
> and keyboard shift status flag.
>  - Late usage of Xen-SWIOTLB allowing PV PCI passthrough guest to boot
without
>    ''iommu=soft'' as an argument and late initialization of
SWIOTLB.
>  - Support more than 128GB in a PV guest.
>  - Cleanups in the initial pagetable creation.
Jan

On Fri, Feb 15, 2013 at 04:47:47PM +0000, Jan Beulich
wrote:
> >>> On 15.02.13 at 17:26, Konrad Rzeszutek Wilk
<konrad.wilk@oracle.com> wrote:
> > v3.7:
> >  - Initial support for ARM working under Xen as both guest and initial
> > domain.
> >  - Security fixes.
> >  - Fix RCU warning, add fallback code for old hypervisors, fix memory
leaks in
> >    gntdev driver, fix some pvops calls failing, Fixes in
> >    xen-[kbd|fb|blk|net|hvc]-backend to deal with CLOSED transition
> >  - Allow xen/privcmd to use v2 of MMAPBATCH command (and fixes for it)
> >  - Support Xen backends to work with paged out grants (meaning work
with HVM
> >    guests that have its memory paged out)
> >  - Performance optimization in xen/privcmd for migrating guests.
> >  - Performance improvements when doing kdump for PVonHVM guests.
> >  - Xen DBGP driver added (USB EHCI debug driver)
> >  - FLR support in xen-pciback.
> >  - Support wildcards in xen-pciback.hide=(*) argument parsing.
> >  - Xen EFI support,
> 
> Where?
That should have said Xen VESA EFI support. Thanks for spotting that.
> 
> > and keyboard shift status flag.
> >  - Late usage of Xen-SWIOTLB allowing PV PCI passthrough guest to boot
without
> >    ''iommu=soft'' as an argument and late
initialization of SWIOTLB.
> >  - Support more than 128GB in a PV guest.
> >  - Cleanups in the initial pagetable creation.
> 
> Jan
>