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[Xen-devel] [GIT PULL] Xen for 2.6.30 #2

To: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] [GIT PULL] Xen for 2.6.30 #2
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Tue, 31 Mar 2009 11:00:34 -0700
Cc: the arch/x86 maintainers <x86@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>
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Hi Linus,

This is the second (and final) set of Xen updates for 2.6.30. This set contains Xen dom0 support, which includes:

   * adding to the existing Xen support to allow running as a
     privileged domain
   * some hooks into the apic setup code to allow Xen interrupts to get
     routed properly
   * a Xen implementation of the DMA ops API
   * a Xen MTRR driver
   * other misc things

These changes only hook into init/setup code, and will have no runtime performance impact on native execution when CONFIG_PARAVIRT is enabled, and are completely compiled out without it.

These changes are more or less unchanged since their first posting about 3-4 weeks ago. The x86 parts have been reviewed (mainly by HPA) and considered not too objectionable.

I merged current linux-2.6 into my branch and sorted out the couple of minor conflicts with recent changes, and merged in the previous changes (the domU stuff). So if you pull this, you'll get the previous pull with it; otherwise you can pull them in order. Uh, I couldn't work out how to generate a shortlog+diffstat with just the dom0 set of changes, so it includes some of the previous pull-requests changes as well.

(I realize now the previous pull request didn't have much of an overview. The quick take is:

   * allow lazy mmu updates to be preempted, removing some
     preempt_disable sections
   * general Xen core updates
   * add /sys/hypervisor support
   * add a /dev/xen/evtchn driver so usermode can wait for and send Xen
     events)


Thanks,
   J

The following changes since commit 15f7176eb1cccec0a332541285ee752b935c1c85:
 Linus Torvalds (1):
       Merge git://git.kernel.org/.../davem/net-2.6

are available in the git repository at:

 git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git 
for-linus/xen/merged

Alex Nixon (8):
     Xen: Add virt_to_pfn helper function
     xen: Don't disable the I/O space
     xen: Allow unprivileged Xen domains to create iomap pages
     Xen: Rename the balloon lock
     xen: Add xen_create_contiguous_region
     x86/PCI: Clean up pci_cache_line_size
     x86/PCI: Enable scanning of all pci functions
     Xen/x86/PCI: Add support for the Xen PCI subsytem

Christophe Saout (1):
     paravirtualize IO permission bitmap

Gerd Hoffmann (2):
     xen: set pirq name to something useful.
     xen: fix legacy irq setup, make ioapic-less machines work.

Hannes Eder (1):
     NULL noise: arch/x86/xen/smp.c

Ian Campbell (13):
     xen: resume interrupts before system devices.
     xen: disable PAT
     xen/dom0: Use host E820 map
     xen: implement XENMEM_machphys_mapping
     xen: clear reserved bits in l3 entries given in the initial pagetables
     xen: pre-initialize legacy irqs early
     xen: add /proc/xen/xsd_{kva,port} to xenfs
     swiotlb: range_needs_mapping should take a physical address.
     swiotlb: do not use sg_virt()
     xen swiotlb: fixup swiotlb is chunks smaller than MAX_CONTIG_ORDER
     xen: add hooks for mapping phys<->bus addresses in swiotlb
     xen/swiotlb: add hook for swiotlb_arch_range_needs_mapping
     xen: enable swiotlb for xen domain 0.

Jeremy Fitzhardinge (74):
     mm: disable preemption in apply_to_pte_range
     x86/paravirt: remove lazy mode in interrupts
     x86/pvops: replace arch_enter_lazy_cpu_mode with arch_start_context_switch
     x86/paravirt: flush pending mmu updates on context switch
     x86/paravirt: finish change from lazy cpu to context switch start/end
     x86/paravirt: allow preemption with lazy mmu mode
     mm: allow preemption in apply_to_pte_range
     x86/paravirt: use percpu_ rather than __get_cpu_var
     xen: disable preempt for leave_lazy_mmu
     xen: separate p2m allocation from setting
     xen: split construction of p2m mfn tables from registration
     xen: clean up xen_load_gdt
     xen: make xen_load_gdt simpler
     xen: remove xen_load_gdt debug
     xen: mask XSAVE from cpuid
     x86-64: remove PGE from must-have feature list
     x86-64: non-paravirt systems always has PSE and PGE
     xen/mmu: some early pagetable cleanups
     xen/mmu: weaken flush_tlb_other test
     xen: set _PAGE_NX in __supported_pte_mask before pagetable construction
     xen: clean up gate trap/interrupt constants
     xen dom0: Make hvc_xen console work for dom0.
     xen: add "capabilities" file
     xen/dom0: use _PAGE_IOMAP in ioremap to do machine mappings
     xen: allow enable use of VGA console on dom0
     xen/dom0: add XEN_DOM0 config option
     x86: make /dev/mem mappings _PAGE_IOMAP
     x86: don't need "changed" parameter for set_io_bitmap()
     xen: checkpatch cleanups
     xen/dom0: handle acpi lapic parsing in Xen dom0
     xen: hook io_apic read/write operations
     xen: create dummy ioapic mapping
     xen: implement pirq type event channels
     x86/io_apic: add get_nr_irqs_gsi()
     xen/apic: identity map gsi->irqs
     xen: direct irq registration to pirq event channels
     xen: bind pirq to vector and event channel
     xen: don't setup acpi interrupt unless there is one
     xen: use acpi_get_override_irq() to get triggering for legacy irqs
     xen: initialize irq 0 too
     xen: dynamically allocate irq & event structures
     xen: disable MSI
     xen/apic: checkpatch cleanups
     xen: set cpu_callout_mask to make mtrr work
     xen: set cpu_callout_mask in cpu_up
     Merge branch 'for-linus/xen/xenfs' into for-linus/xen/dom0/xenfs
     xen: add xen_set_domain_pte()
     xen: add privcmd driver
     xen/privcmd: create address space to allow writable mmaps
     xen: add variable hypercall caller
     xen/privcmd: clean up ioctls into their own functions
     xen/privcmd: rearrange mmap ioctl to share code
     xen/xenfs: set_page_dirty is supposed to return true if it dirties
     xen/privcmd: print SIGBUS faults
     xen/privcmd: make sure vma is ours before doing anything to it
     xenbus: export xen_store_interface for xenfs
     xen/xenfs: checkpatch cleanups
     x86/pci: make sure _PAGE_IOMAP it set on pci mappings
     xen/pci: clean up Kconfig a bit
     xen: make sure swiotlb allocation is physically contigious
     xen/swiotlb: use dma_alloc_from_coherent to get device coherent memory
     swiotlb: use swiotlb_alloc_boot to allocate emergency pool
     xen/swiotlb: improve comment on gfp flags in xen_alloc_coherent()
     xen/swiotlb: add sync functions
     pci-swiotlb: fix "no return in non-void function"
     pci-swiotlb: remove __weak vs __weak binding
     xen: checkpatch cleanups
     x86: define arch_vm_get_page_prot to set _PAGE_IOMAP on VM_IO vmas
     agp: use more dma-ops-like operations for agp memory
     agp/intel: use dma_alloc_coherent for special cursor memory
     Merge branches 'for-linus/xen/dom0/apic', 'for-linus/xen/dom0/pci', 
'for-linus/xen/dom0/drm', 'for-linus/xen/dom0/mtrr' and 
'for-linus/xen/dom0/xenfs' into for-linus/xen/dom0/master
     Merge commit 'origin/master' into for-linus/xen/merged
     xen/swiotlb: update to new new dma_ops
     xen/apic: add pin argument to setup_ioapic_entry()

Juan Quintela (2):
     xen dom0: Initialize xenbus for dom0.
     xen dom0: Set up basic IO permissions for dom0.

Mark McLoughlin (5):
     xen mtrr: Use specific cpu_has_foo macros instead of generic cpu_has()
     xen mtrr: Use generic_validate_add_page()
     xen mtrr: Implement xen_get_free_region()
     xen mtrr: Add xen_{get,set}_mtrr() implementations
     xen mtrr: Kill some unnecessary includes

Stephen Tweedie (2):
     xen dom0: Add support for the platform_ops hypercall
     xen mtrr: Add mtrr_ops support for Xen mtrr

arch/x86/Kconfig                         |    4 +
arch/x86/include/asm/agp.h               |   15 +-
arch/x86/include/asm/io.h                |    2 +
arch/x86/include/asm/io_apic.h           |    7 +
arch/x86/include/asm/paravirt.h          |   31 ++-
arch/x86/include/asm/pat.h               |    5 +
arch/x86/include/asm/pci.h               |    8 +-
arch/x86/include/asm/pci_x86.h           |    2 +
arch/x86/include/asm/pgtable.h           |    5 +
arch/x86/include/asm/processor.h         |    4 +
arch/x86/include/asm/required-features.h |    8 +-
arch/x86/include/asm/thread_info.h       |    2 +
arch/x86/include/asm/xen/hypercall.h     |   25 ++
arch/x86/include/asm/xen/interface.h     |    6 +-
arch/x86/include/asm/xen/interface_32.h  |    5 +
arch/x86/include/asm/xen/interface_64.h  |   13 +-
arch/x86/include/asm/xen/iommu.h         |   12 +
arch/x86/include/asm/xen/page.h          |   19 +-
arch/x86/include/asm/xen/pci.h           |   13 +
arch/x86/kernel/acpi/boot.c              |   18 +-
arch/x86/kernel/apic/io_apic.c           |   37 ++-
arch/x86/kernel/cpu/mtrr/Makefile        |    1 +
arch/x86/kernel/cpu/mtrr/amd.c           |    1 +
arch/x86/kernel/cpu/mtrr/centaur.c       |    1 +
arch/x86/kernel/cpu/mtrr/cyrix.c         |    1 +
arch/x86/kernel/cpu/mtrr/generic.c       |    1 +
arch/x86/kernel/cpu/mtrr/main.c          |   11 +-
arch/x86/kernel/cpu/mtrr/mtrr.h          |    7 +
arch/x86/kernel/cpu/mtrr/xen.c           |  120 ++++++++
arch/x86/kernel/ioport.c                 |   29 ++-
arch/x86/kernel/kvm.c                    |    2 +-
arch/x86/kernel/paravirt.c               |   57 ++--
arch/x86/kernel/pci-dma.c                |    3 +
arch/x86/kernel/pci-swiotlb.c            |   31 ++-
arch/x86/kernel/process.c                |   27 +--
arch/x86/kernel/process_32.c             |    2 +-
arch/x86/kernel/process_64.c             |    2 +-
arch/x86/kernel/vmi_32.c                 |   20 +-
arch/x86/lguest/boot.c                   |   16 +-
arch/x86/mm/fault.c                      |    6 +-
arch/x86/mm/highmem_32.c                 |    2 -
arch/x86/mm/iomap_32.c                   |    1 -
arch/x86/mm/pageattr.c                   |   14 -
arch/x86/mm/pat.c                        |    7 +-
arch/x86/mm/pgtable.c                    |   10 +
arch/x86/pci/Makefile                    |    1 +
arch/x86/pci/common.c                    |   18 +-
arch/x86/pci/i386.c                      |    3 +
arch/x86/pci/init.c                      |    6 +
arch/x86/pci/xen.c                       |   51 +++
arch/x86/xen/Kconfig                     |   40 +++
arch/x86/xen/Makefile                    |    4 +-
arch/x86/xen/apic.c                      |   60 ++++
arch/x86/xen/enlighten.c                 |  150 ++++++++--
arch/x86/xen/mmu.c                       |  490 +++++++++++++++++++++++++++---
arch/x86/xen/mmu.h                       |    3 +
arch/x86/xen/pci.c                       |   86 ++++++
arch/x86/xen/setup.c                     |   50 +++-
arch/x86/xen/smp.c                       |    6 +-
arch/x86/xen/vga.c                       |   68 ++++
arch/x86/xen/xen-ops.h                   |   21 ++-
drivers/char/agp/intel-agp.c             |   24 +-
drivers/char/hvc_xen.c                   |   99 ++++--
drivers/pci/Makefile                     |    2 +
drivers/pci/pci.h                        |    2 -
drivers/pci/xen-iommu.c                  |  331 ++++++++++++++++++++
drivers/xen/balloon.c                    |   15 +-
drivers/xen/events.c                     |  276 ++++++++++++++++-
drivers/xen/manage.c                     |    5 +-
drivers/xen/xenbus/xenbus_probe.c        |   34 ++-
drivers/xen/xenfs/Makefile               |    3 +-
drivers/xen/xenfs/privcmd.c              |  442 +++++++++++++++++++++++++++
drivers/xen/xenfs/super.c                |  115 +++++++-
drivers/xen/xenfs/xenfs.h                |    3 +
drivers/xen/xenfs/xenstored.c            |   67 ++++
include/asm-frv/pgtable.h                |    4 +-
include/asm-generic/pgtable.h            |   21 +-
include/linux/pci.h                      |    6 +
include/xen/Kbuild                       |    1 +
include/xen/events.h                     |   24 ++
include/xen/interface/memory.h           |   92 ++++++
include/xen/interface/platform.h         |  222 ++++++++++++++
include/xen/interface/xen.h              |   41 +++
include/xen/privcmd.h                    |   80 +++++
include/xen/swiotlb.h                    |   20 ++
include/xen/xen-ops.h                    |    6 +
kernel/sched.c                           |    2 +-
lib/swiotlb.c                            |    5 +-
88 files changed, 3276 insertions(+), 336 deletions(-)
create mode 100644 arch/x86/include/asm/xen/iommu.h
create mode 100644 arch/x86/include/asm/xen/pci.h
create mode 100644 arch/x86/kernel/cpu/mtrr/xen.c
create mode 100644 arch/x86/pci/xen.c
create mode 100644 arch/x86/xen/apic.c
create mode 100644 arch/x86/xen/pci.c
create mode 100644 arch/x86/xen/vga.c
create mode 100644 drivers/pci/xen-iommu.c
create mode 100644 drivers/xen/xenfs/privcmd.c
create mode 100644 drivers/xen/xenfs/xenstored.c
create mode 100644 include/xen/Kbuild
create mode 100644 include/xen/interface/platform.h
create mode 100644 include/xen/privcmd.h
create mode 100644 include/xen/swiotlb.h



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