linux-stable.git/arch/ia64/include/asm, branch linux-4.5.y

ia64: define ioremap_uc()

2016-04-12T14:33:35+00:00

commit b0f84ac352762ed02d7ea9f284942a8cab7f9077 upstream.

All architectures now need ioremap_uc(), ia64 seems defines this already
through its ioremap_nocache() and it already ensures it *only* uses UC.

This is needed since v4.3 to complete an allyesconfig compile on ia64,
there were others archs that needed this, and this one seems to have
fallen through the cracks.

Signed-off-by: Luis R. Rodriguez 
Reported-by: kbuild test robot 
Acked-by: Tony Luck 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

[IA64] Enable copy_file_range syscall for ia64

2016-01-22T22:20:01+00:00

New system call added in:
  29732938a6289a15e907da234d6692a2ead71855
  vfs: add copy_file_range syscall and vfs helper

Signed-off-by: Tony Luck

dma-mapping: always provide the dma_map_ops based implementation

2016-01-21T01:09:18+00:00

Move the generic implementation to  now that all
architectures support it and remove the HAVE_DMA_ATTR Kconfig symbol now
that everyone supports them.

[valentinrothberg@gmail.com: remove leftovers in Kconfig]
Signed-off-by: Christoph Hellwig 
Cc: "David S. Miller" 
Cc: Aurelien Jacquiot 
Cc: Chris Metcalf 
Cc: David Howells 
Cc: Geert Uytterhoeven 
Cc: Haavard Skinnemoen 
Cc: Hans-Christian Egtvedt 
Cc: Helge Deller 
Cc: James Hogan 
Cc: Jesper Nilsson 
Cc: Koichi Yasutake 
Cc: Ley Foon Tan 
Cc: Mark Salter 
Cc: Mikael Starvik 
Cc: Steven Miao 
Cc: Vineet Gupta 
Cc: Christian Borntraeger 
Cc: Joerg Roedel 
Cc: Sebastian Ott 
Signed-off-by: Valentin Rothberg 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

2016-01-19T00:44:24+00:00

Pull virtio barrier rework+fixes from Michael Tsirkin:
 "This adds a new kind of barrier, and reworks virtio and xen to use it.

  Plus some fixes here and there"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (44 commits)
  checkpatch: add virt barriers
  checkpatch: check for __smp outside barrier.h
  checkpatch.pl: add missing memory barriers
  virtio: make find_vqs() checkpatch.pl-friendly
  virtio_balloon: fix race between migration and ballooning
  virtio_balloon: fix race by fill and leak
  s390: more efficient smp barriers
  s390: use generic memory barriers
  xen/events: use virt_xxx barriers
  xen/io: use virt_xxx barriers
  xenbus: use virt_xxx barriers
  virtio_ring: use virt_store_mb
  sh: move xchg_cmpxchg to a header by itself
  sh: support 1 and 2 byte xchg
  virtio_ring: update weak barriers to use virt_xxx
  Revert "virtio_ring: Update weak barriers to use dma_wmb/rmb"
  asm-generic: implement virt_xxx memory barriers
  x86: define __smp_xxx
  xtensa: define __smp_xxx
  tile: define __smp_xxx
  ...

libnvdimm, pfn, pmem: allocate memmap array in persistent memory

2016-01-16T01:56:32+00:00

Use the new vmem_altmap capability to enable the pmem driver to arrange
for a struct page memmap to be established in persistent memory.

[linux@roeck-us.net: mn10300: declare __pfn_to_phys() to fix build error]
Signed-off-by: Dan Williams 
Cc: Christoph Hellwig 
Cc: Dave Chinner 
Cc: Ross Zwisler 
Signed-off-by: Guenter Roeck 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ia64: split off early_ioremap() declarations into asm/early_ioremap.h

2016-01-13T18:35:14+00:00

Unlike x86, arm64 and ARM, ia64 does not declare its implementations
of early_ioremap/early_iounmap/early_memremap/early_memunmap in a header
file called 

This complicates the use of these functions in generic code, since the
header cannot be included directly, and we have to rely on transitive
includes, which is fragile.

So create a  for ia64, and move the existing
definitions into it.

Signed-off-by: Ard Biesheuvel 
Signed-off-by: Tony Luck

ia64: define __smp_xxx

2016-01-12T18:46:55+00:00

This defines __smp_xxx barriers for ia64,
for use by virtualization.

smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h

This reduces the amount of arch-specific boiler-plate code.

Signed-off-by: Michael S. Tsirkin 
Acked-by: Tony Luck 
Acked-by: Arnd Bergmann 
Acked-by: Peter Zijlstra (Intel)

ia64: reuse asm-generic/barrier.h

2016-01-12T18:46:47+00:00

On ia64 smp_rmb, smp_wmb, read_barrier_depends, smp_read_barrier_depends
and smp_store_mb() match the asm-generic variants exactly. Drop the
local definitions and pull in asm-generic/barrier.h instead.

This is in preparation to refactoring this code area.

Signed-off-by: Michael S. Tsirkin 
Acked-by: Tony Luck 
Acked-by: Arnd Bergmann 
Acked-by: Peter Zijlstra (Intel)

lcoking/barriers, arch: Use smp barriers in smp_store_release()

2016-01-12T18:46:46+00:00

With commit b92b8b35a2e ("locking/arch: Rename set_mb() to smp_store_mb()")
it was made clear that the context of this call (and thus set_mb)
is strictly for CPU ordering, as opposed to IO. As such all archs
should use the smp variant of mb(), respecting the semantics and
saving a mandatory barrier on UP.

Signed-off-by: Davidlohr Bueso 
Signed-off-by: Peter Zijlstra (Intel) 
Cc: 
Cc: Andrew Morton 
Cc: Benjamin Herrenschmidt 
Cc: Heiko Carstens 
Cc: Linus Torvalds 
Cc: Paul E. McKenney 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: Tony Luck 
Cc: dave@stgolabs.net
Link: http://lkml.kernel.org/r/1445975631-17047-3-git-send-email-dave@stgolabs.net
Signed-off-by: Ingo Molnar 

Reviewed-by: Paul E. McKenney

Merge branch 'for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2016-01-12T03:13:56+00:00

Pull percpu updates from Tejun Heo:
 "Two trivial percpu patches for v4.5-rc1"

* 'for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  percpu: remove PERCPU_ENOUGH_ROOM which is stale definition
  percpu: Remove unneeded return from void function