Merge branch 'linus' into x86/bootmem

Conflicts:
arch/x86/mm/numa_64.c

Merge reason: fix the conflict, update to latest -rc and pick up this
dependent fix from Yinghai:

e6d2e2b2b1

Merge branch 'linus' into x86/bootmem

Conflicts:
arch/x86/mm/numa_64.c

Merge reason: fix the conflict, update to latest -rc and pick up this
dependent fix from Yinghai:

e6d2e2b2b1e1: memblock: don't adjust size in memblock_find_base()

Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Merge commit 'v2.6.38-rc3' into next

Merge commit 'v2.6.38-rc2' into core/locking

Reason: Update to mainline before adding the locking cleanup

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Merge branches 'sh/wdt', 'sh/pci-express-async' and 'common/serial-rework' into sh-latest

Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6

Merge branch 'master' of /repos/git/net-next-2.6

Merge branch 'for-2.6.38' into for-2.6.39

Merge branch 'master' of /pub/scm/linux/kernel/git/jejb/scsi-post-merge-2.6 into for-linus

Merge branch 'devicetree/next' into spi/next

Merge branch 'common/mmcif' into rmobile-latest

Merge branch 'stable/gntdev' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

* 'stable/gntdev' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/p2m: Fix module linking

Merge branch 'stable/gntdev' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

* 'stable/gntdev' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/p2m: Fix module linking error.
xen p2m: clear the old pte when adding a page to m2p_override
xen gntdev: use gnttab_map_refs and gnttab_unmap_refs
xen: introduce gnttab_map_refs and gnttab_unmap_refs
xen p2m: transparently change the p2m mappings in the m2p override
xen/gntdev: Fix circular locking dependency
xen/gntdev: stop using "token" argument
xen: gntdev: move use of GNTMAP_contains_pte next to the map_op
xen: add m2p override mechanism
xen: move p2m handling to separate file
xen/gntdev: add VM_PFNMAP to vma
xen/gntdev: allow usermode to map granted pages
xen: define gnttab_set_map_op/unmap_op

Fix up trivial conflict in drivers/xen/Kconfig

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xen gntdev: use gnttab_map_refs and gnttab_unmap_refs

Use gnttab_map_refs and gnttab_unmap_refs to map and unmap the grant
ref, so that we can have a corresponding struct page.

Signed-off-by: Stefa

xen gntdev: use gnttab_map_refs and gnttab_unmap_refs

Use gnttab_map_refs and gnttab_unmap_refs to map and unmap the grant
ref, so that we can have a corresponding struct page.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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xen/gntdev: Fix circular locking dependency

apply_to_page_range will acquire PTE lock while priv->lock is held,
and mn_invl_range_start tries to acquire priv->lock with PTE already
held. Fix by not

xen/gntdev: Fix circular locking dependency

apply_to_page_range will acquire PTE lock while priv->lock is held,
and mn_invl_range_start tries to acquire priv->lock with PTE already
held. Fix by not holding priv->lock during the entire map operation.
This is safe because map->vma is set nonzero while the lock is held,
which will cause subsequent maps to fail and will cause the unmap
ioctl (and other users of gntdev_del_map) to return -EBUSY until the
area is unmapped. It is similarly impossible for gntdev_vma_close to
be called while the vma is still being created.

Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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xen/gntdev: stop using "token" argument

It's the struct page of the L1 pte page. But we can get its mfn
by simply doing an arbitrary_virt_to_machine() on it anyway (which is
the safe conservative c

xen/gntdev: stop using "token" argument

It's the struct page of the L1 pte page. But we can get its mfn
by simply doing an arbitrary_virt_to_machine() on it anyway (which is
the safe conservative choice; since we no longer allow HIGHPTE pages,
we would never expect to be operating on a mapped pte page).

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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xen: gntdev: move use of GNTMAP_contains_pte next to the map_op

This flag controls the meaning of gnttab_map_grant_ref.host_addr and
specifies that the field contains a reference to the pte entry to

xen: gntdev: move use of GNTMAP_contains_pte next to the map_op

This flag controls the meaning of gnttab_map_grant_ref.host_addr and
specifies that the field contains a reference to the pte entry to be
used to perform the mapping. Therefore move the use of this flag to
the point at which we actually use a reference to the pte instead of
something else, splitting up the usage of the flag in this way is
confusing and potentially error prone.

The other flags are all properties of the mapping itself as opposed to
properties of the hypercall arguments and therefore it make sense to
continue to pass them round in map->flags.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
Cc: Derek G. Murray <Derek.Murray@cl.cam.ac.uk>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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xen/gntdev: add VM_PFNMAP to vma

These pages are from other domains, so don't have any local PFN.
VM_PFNMAP is the closest concept Linux has to this.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitz

xen/gntdev: add VM_PFNMAP to vma

These pages are from other domains, so don't have any local PFN.
VM_PFNMAP is the closest concept Linux has to this.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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xen/gntdev: allow usermode to map granted pages

The gntdev driver allows usermode to map granted pages from other
domains. This is typically used to implement a Xen backend driver
in user mode.

Si

xen/gntdev: allow usermode to map granted pages

The gntdev driver allows usermode to map granted pages from other
domains. This is typically used to implement a Xen backend driver
in user mode.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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