Merge with -unstable

Minor cleanups.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

merge?

Add hotplug script to run vif-bridge up script when a backend vif starts up.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Fix MPT mapping for x86/64. Also i386 no longer needs
4MB mapping for PAE, as xenlinux can handle faults when
accessing unmapped sections of the table.

Signed-off-by: Keir Fraser <keir@xensource.com>

merge?

merge?

Memory management fixes. Page tables are created, buddy allocator now
has ability to free memory (as well as allocate it).

Signed-off-by: Grzegorz Milos <gm281@cam.ac.uk>

Cleanup unused code.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

This patch fixes Bugzilla #169. (It should fix #187 too -- Keir).

The root cause of bug 169 is, machine_to_phys_mapping, starting from
0xffff800000000000, is mapped using 2M pages.  When the system has RAM
no more than 2G, only one 2M page is allocated and only one PDE entry is
created correspondingly, so calling mfn_to_pfn with mfn > 0x80000 will
overflow this 2M page and cause a unable handled kernel paging request.
The mfn > 0x80000 comes from PCI device I/O memory, here from AGP
display card when booting X server.  Jun suggested to use something like
get_user() when accessing machine_to_phys_mapping.

Signed-off-by: Xin Li <xin.b.li@intel.com>

The mpt entry is 4 bytes even on x86_64, so we use 4 when
calculating mpt size.

Signed-off-by: Xin Li <xin.b.li@intel.com>

1. Remove workaround patch
2. Update scripts/vif-bridge to not call 'brctl delif'

When a domU is shutdown/destroyed and the netif is destroyed, the
notify_call_chain triggered from unregister_netdevice() will trigger the
bridge event handler and which will call the proper code to remove the
device from the bridge.

I can't see any reason why brtcl delif should be called when taking out
a domain if the call chain will delete the interface from the bridge
when the vif is destroyed automatically.

Signed-off-by: Ryan Harper <ryanh@us.ibm.com>

Remove broken patch preventing net device unregister.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Cleanup vif entries in store when domain goes away.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Fix device destruction.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Store correct rx ring handle in netback driver.
Signed-off-by: Keir Fraser <keir@xensource.com>

merge?

g/c Linux 2.4 netback support.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

More cleanups and g/c of unused code.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Fix grant-ref allocation in netfront.

Signed-off-by: Keir Fraser <keir@xensource.com>

merge?

g/c unused code.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Fix SMP booting: x86/64 startup initialisation fixes and so on.
Signed-off-by: Keir Fraser <keir@xensource.com>

Fix install of xenctrl.h.

merge?

Fix the exception thrown when doing, for example, "xm domid" on a non-existent domain.
Signed-off-by: Dan Smith <danms@us.ibm.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

merge?

Updated to reflect new tools added here.
Signed-off-by: Judy Fischbach <jfisch@us.ibm.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Ensure explicit asm statememt goes in the correct section.

merge?

Break the building/save/restore code out into a separate library libxenguest.
Also update the tools accordingly.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Rename libxc => libxenctrl and xc.h => xen/xenctrl.h
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
--HG--
rename : tools/libxc/xc.h => tools/libxc/xenctrl.h

merge?

Switch network setup over to xenbus.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Update error message.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Rename grant-id to ring-ref.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Watch may fire before we've allocated the interface structure.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Unregister watch in error path.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Avoid calling device_unregister from device_register callback.
Also simplify code.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Disable debug output again.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Print status of Flush Filter on AMD64 processors during
Xen boot. Also provide a new boot parameter:
 amd_flush_filter=on  : Forcibly enable the Filter
 amd_flush_filter=off : Forcibly disable the Filter

Signed-off-by: Keir Fraser <keir@xensource.com>

merge?

Always free the lowest 1MB of pseudo-physical memory when booting
a guest.

Signed-off-by: Keir Fraser <keir@xensource.com>

Revert changeset a3822cb3b2b3c24e6b46c1fed3e6c366817f52ad.
With this changeset the error message is incorrect.
Revert: Fix the exception thrown when doing, for example,
        "xm domid" on a non-existent domain.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Fix x86/64 pagetable initialisation so that only things that
need to be are mapped read-only.

Signed-off-by: Keir Fraser <keir@xensource.com>

Add EXT3 as built-in filesystem for x86/64 domU.

Copy correct number of bytes for xen_start_info in x86_64
head.S.

Signed-off-by: Keir Fraser <keir@xensource.com>

Initialise syscall32 vsyscall page early, as it may be needed
for some initcalls (e.g., if initrd /bin/hotplug is an i386
binary).

Signed-off-by: Keir Fraser <keir@xensource.com>

Update comment.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Don't use the grant pre-allocation system for the ring grants.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Add some additional error nodes when block device setup fails.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Fix the exception thrown when doing, for example, "xm domid" on a non-existent domain.
Signed-off-by: Dan Smith <danms@us.ibm.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Ensure percpu data area not used before the TR is set.

Xenstore testsuite robustness: save output rather than rerun on failure.
"make check" reruns a test which fails with more verbosity.  If the test
fails intermittently, that doesn't work well: save the output and simply
dump it if the test fails.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Fix xenstore testsuite for valgrind 3.0 and latest Debian glibc.
Debian upgrade revealed two problems: glibc spits out a warning on every
binary, and valgrind 3.0 gratuitously changed --logfile-fd to --log-fd,
so don't use it.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Make directories implicitly for mkdir and write.
Change directory code: make then move (safer than delete-if-fail).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

g/c extra test.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Put the call to notifier_call_chain() back in do_xenbus_probe().
This fixes some dom0 activities, such as ballooning, sysrqing,
and cpu hotplugging.
Signed-off-by: Dan Smith <danms@us.ibm.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

merge?

xenstat/xentop merge.

merge?

g/c vbd active.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Fix non-hotplug i386 build. Spotted by Rik van Riel.

Remove blkback 2.4 support since we don't support 2.4 dom0 anymore.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

merge?

Minor cleanup.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Build topology.c into x86/64 xenlinux kernel. This omission
spotted by Ryan Harper at IBM.

Ensure cur_pgd per-cpu variables are initialised early.
Secondary VCPUs can take page faults immediately after
booting, because of writable pagetable logic.

Signed-off-by: Keir Fraser <keir@xensource.com>

Don't mask off arbitrary error-code bits in i386 xenlinux
page fault handler.

Signed-off-by: Keir Fraser <keir@xensource.com>

Improve show_page_walk() debugging in Xen, to print
arbitrary page walks (not just walks of Xen mappings).

Signed-off-by: Keir Fraser <keir@xensource.com>

More cleanups and fix free_blkif from wrong context bug (thanks Keir!).
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Drop support for multiple vbds per blkif.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Move major/minor macros into public header, rename and use.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Link xentop with ncurses. Distros generally do not ship
with basic curses.

Update ignores list.

Merge x86_64 and i386 ioremap.c.

Signed-off-by: Keir Fraser <keir@xensource.com>

Update netfront for grant table interface changes.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Fix PAE and x86/64 when NX/XD is unavailable.

Signed-off-by: Keir Fraser <keir@xensource.com>

Cleanup grant table code.
- keep count of free references
- let callbacks specify the number of references they need at least
- get rid of terminal reference
- simplify and more correct locking for callbacks
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

phys_to_machine_mapping array is not an array of longs.
Fix start-of-day code and FOREIGN_FRAME() macro in light
of this. Also fix pfn_to_mfn() to mask off the foreign-frame
marker bit. The few places where we rely on that bit we read
out of the array directly, rather than using the pfn_to_mfn()
accessor macro.

This fixes, among other things, booting domU on PAE with swiotlb
disabled.

Signed-off-by: Keir Fraser <keir@xensource.com>

This patch extends I/O APIC guest writes so that the correct destination
fields are written in the redirection table entry.

Signed-off-by: Aravindh Puthiyaparambil
               <aravindh.puthiyaparambil@unisys.com>

g/c struct work_struct declaration.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

This patch turns on host-side USB support in the x86_64 Dom0 kernel.

Signed-off-by: Aravindh Puthiyaparambil
               <aravindh.puthiyaparambil@unisys.com>

Remove double invocation of vmx_intr_assist when VM_EXIT
causes a domain switch.

Signed-off-by: Eddie Dong <eddie.dong@intel.com>
Signed-off-by: Edwin Zhai <edwin.zhai@intel.com>

Add EXPORT_SYMBOL for gnttab_free_grant_reference.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Update gnttab_free_callback_list locking.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Add locking for gnttab_free_callback_list.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

merge?

merge?

Use explicit functions with args instead of work_structs for callbacks.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Add xenversion support

Add a newline to the fscanf format string used to parse /proc/net/dev entries, to avoid an additional read and bad-entry-skip just to eat the newline.

Make the set_delay function use the provided parameter to set the delay, not the global prompt_val.

Change default xentop update delay from 1 to 3 seconds.

Fix compiler warnings.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Merge libxenstat and xentop.

Use a block interface for each device.
Lots of code cleanups, incl. a couple of bug fixes.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Update for grant table interface changes.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

Grant table updates for block device changes.
- add gnttab_free_grant_reference
- make gnttab_free_grant_references interface consistent with other gnttab
  functions
- add support for callback when references are freed
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

no pae by default