linux.git/arch/s390/kernel/setup.c, branch v3.15

s390: add 31 bit warning message

2014-04-11T11:53:31+00:00

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390/uaccess: remove dead kernel parameter 'user_mode='

2014-02-21T07:50:16+00:00

Remove another leftover from the time when we supported running
user space in either home or primary address space.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390/uaccess: get rid of indirect function calls

2014-02-21T07:50:14+00:00

There are only two uaccess variants on s390 left: the version that is used
if the mvcos instruction is available, and the page table walk variant.
So there is no need for expensive indirect function calls.

By default the mvcos variant will be called. If the mvcos instruction is not
available it will call the page table walk variant.

For minimal performance impact the "if (mvcos_is_available)" is implemented
with a jump label, which will be a six byte nop on machines with mvcos.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2014-01-20T17:23:31+00:00

Pull s390 updates from Martin Schwidefsky:
 "The bulk of the s390 updates for v3.14.

  New features are the perf support for the CPU-Measurement Sample
  Facility and the EP11 support for the crypto cards.  And the normal
  cleanups and bug-fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (44 commits)
  s390/cpum_sf: fix printk format warnings
  s390: Fix misspellings using 'codespell' tool
  s390/qdio: bridgeport support - CHSC part
  s390: delete new instances of __cpuinit usage
  s390/compat: fix PSW32_USER_BITS definition
  s390/zcrypt: add support for EP11 coprocessor cards
  s390/mm: optimize randomize_et_dyn for !PF_RANDOMIZE
  s390: use IS_ENABLED to check if a CONFIG is set to y or m
  s390/cio: use device_lock to synchronize calls to the ccwgroup driver
  s390/cio: use device_lock to synchronize calls to the ccw driver
  s390/cio: fix unlocked access of online member
  s390/cpum_sf: Add flag to process full SDBs only
  s390/cpum_sf: Add raw data sampling to support the diagnostic-sampling function
  s390/cpum_sf: Filter perf events based event->attr.exclude_* settings
  s390/cpum_sf: Detect KVM guest samples
  s390/cpum_sf: Add helper to read TOD from trailer entries
  s390/cpum_sf: Atomically reset trailer entry fields of sample-data-blocks
  s390/cpum_sf: Dynamically extend the sampling buffer if overflows occur
  s390/pci: reenable per default
  s390/pci/dma: fix accounting of allocated_pages
  ...

s390: Fix misspellings using 'codespell' tool

2014-01-16T15:40:13+00:00

Signed-off-by: Hendrik Brueckner 
Signed-off-by: Martin Schwidefsky

s390/smp: improve setup of possible cpu mask

2013-12-18T16:35:18+00:00

Since under z/VM we cannot have more than 64 cpus, make sure the
cpu_possible_mask does not contain more bits.
This avoids wasting memory for dynamic per-cpu allocations if
CONFIG_NR_CPUS is larger than 64.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390/sclp: Determine HSA size dynamically for zfcpdump

2013-11-15T13:08:40+00:00

Currently we have hardcoded the HSA size to 32 MiB. With this patch the
HSA size is determined dynamically via SCLP in early.c.

Reviewed-by: Heiko Carstens 
Signed-off-by: Michael Holzheu 
Signed-off-by: Martin Schwidefsky

s390/uaccess: always run the kernel in home space

2013-10-24T15:16:57+00:00

Simplify the uaccess code by removing the user_mode=home option.
The kernel will now always run in the home space mode.

Signed-off-by: Martin Schwidefsky

s390: add support for IBM zBC12 machine

2013-07-26T11:25:21+00:00

Just add the new model number where appropiate.

Cc: stable@vger.kernel.org # v3.10
Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390: remove setting for saved_max_pfn

2013-07-03T23:08:04+00:00

The only user of saved_max_pfn in s390 is read_oldmem interface but we
have removed that interface, so saved_max_pfn is now unneeded in s390, and
we needn't set it anymore.

Signed-off-by: Zhang Yanfei 
Cc: Martin Schwidefsky 
Cc: Heiko Carstens 
Cc: Michael Holzheu 
Cc: "Eric W. Biederman" 
Cc: "H. Peter Anvin" 
Cc: Benjamin Herrenschmidt 
Cc: Dave Hansen 
Cc: Fenghua Yu 
Cc: Matt Fleming 
Cc: Paul Mackerras 
Cc: Ralf Baechle 
Cc: Tony Luck 
Cc: Vivek Goyal 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds