linux-toradex.git/arch/s390/include/uapi/asm, branch v4.4.97

s390: wire up mlock2 system call

2015-11-16T11:51:07+00:00

Passes mlock2-tests test case in 64 bit and compat mode.

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

s390/syscalls: remove system call number calculation

2015-11-09T08:10:48+00:00

Explicitly write the system call number for each define instead of
calculating it. This makes it easier to parse the file when generating
system call tables for various tools and libraries.

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

s390: wire up separate socketcalls system calls

2015-09-18T09:16:53+00:00

As discussed on linux-arch all architectures should wire up the separate
system calls that are hidden behind the socketcall multiplexer system call.

It's just a couple more system calls and gives us a very small performance
improvement.

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

s390/s390x: allocate sys_membarrier system call number

2015-09-17T11:43:44+00:00

Signed-off-by: Mathieu Desnoyers 
CC: Andrew Morton 
CC: linux-api@vger.kernel.org
CC: Heiko Carstens 
CC: linux-s390@vger.kernel.org
Signed-off-by: Martin Schwidefsky

s390: wire up userfaultfd system call

2015-09-17T11:43:43+00:00

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

s390/numa: add core infrastructure

2015-08-03T16:40:25+00:00

Enable core NUMA support for s390 and add one simple default mode "plain"
that creates one single NUMA node.

This patch contains several changes from Michael Holzheu.

Signed-off-by: Philipp Hachtmann 
Signed-off-by: Michael Holzheu 
Signed-off-by: Martin Schwidefsky

KVM: s390: Allocate and save/restore vector registers

2015-03-06T12:49:33+00:00

Define and allocate space for both the host and guest views of
the vector registers for a given vcpu.  The 32 vector registers
occupy 128 bits each (512 bytes total), but architecturally are
paired with 512 additional bytes of reserved space for future
expansion.

The kvm_sync_regs structs containing the registers are union'ed
with 1024 bytes of padding in the common kvm_run struct.  The
addition of 1024 bytes of new register information clearly exceeds
the existing union, so an expansion of that padding is required.

When changing environments, we need to appropriately save and
restore the vector registers viewed by both the host and guest,
into and out of the sync_regs space.

The floating point registers overlay the upper half of vector
registers 0-15, so there's a bit of data duplication here that
needs to be carefully avoided.

Signed-off-by: Eric Farman 
Reviewed-by: Thomas Huth 
Acked-by: Christian Borntraeger 
Signed-off-by: Christian Borntraeger

KVM: s390: fix instruction interception trace point

2015-03-06T12:40:58+00:00

trace-cmd fails to parse the instruction interception trace point:
  "Error: expected type 5 but read 4
   failed to read event print fmt for kvm_s390_intercept_instruction"
The result is an unformatted string in the output, with a warning:
  "kvm_s390_intercept_instruction: [FAILED TO PARSE]..."

So let's add parentheses around the instruction parser macro to fix the format
parsing.

Acked-by: Christian Borntraeger 
Acked-by: Cornelia Huck 
Signed-off-by: David Hildenbrand 
Signed-off-by: Christian Borntraeger

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2015-02-13T17:55:09+00:00

Pull KVM update from Paolo Bonzini:
 "Fairly small update, but there are some interesting new features.

  Common:
     Optional support for adding a small amount of polling on each HLT
     instruction executed in the guest (or equivalent for other
     architectures).  This can improve latency up to 50% on some
     scenarios (e.g. O_DSYNC writes or TCP_RR netperf tests).  This
     also has to be enabled manually for now, but the plan is to
     auto-tune this in the future.

  ARM/ARM64:
     The highlights are support for GICv3 emulation and dirty page
     tracking

  s390:
     Several optimizations and bugfixes.  Also a first: a feature
     exposed by KVM (UUID and long guest name in /proc/sysinfo) before
     it is available in IBM's hypervisor! :)

  MIPS:
     Bugfixes.

  x86:
     Support for PML (page modification logging, a new feature in
     Broadwell Xeons that speeds up dirty page tracking), nested
     virtualization improvements (nested APICv---a nice optimization),
     usual round of emulation fixes.

     There is also a new option to reduce latency of the TSC deadline
     timer in the guest; this needs to be tuned manually.

     Some commits are common between this pull and Catalin's; I see you
     have already included his tree.

  Powerpc:
     Nothing yet.

     The KVM/PPC changes will come in through the PPC maintainers,
     because I haven't received them yet and I might end up being
     offline for some part of next week"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (130 commits)
  KVM: ia64: drop kvm.h from installed user headers
  KVM: x86: fix build with !CONFIG_SMP
  KVM: x86: emulate: correct page fault error code for NoWrite instructions
  KVM: Disable compat ioctl for s390
  KVM: s390: add cpu model support
  KVM: s390: use facilities and cpu_id per KVM
  KVM: s390/CPACF: Choose crypto control block format
  s390/kernel: Update /proc/sysinfo file with Extended Name and UUID
  KVM: s390: reenable LPP facility
  KVM: s390: floating irqs: fix user triggerable endless loop
  kvm: add halt_poll_ns module parameter
  kvm: remove KVM_MMIO_SIZE
  KVM: MIPS: Don't leak FPU/DSP to guest
  KVM: MIPS: Disable HTW while in guest
  KVM: nVMX: Enable nested posted interrupt processing
  KVM: nVMX: Enable nested virtual interrupt delivery
  KVM: nVMX: Enable nested apic register virtualization
  KVM: nVMX: Make nested control MSRs per-cpu
  KVM: nVMX: Enable nested virtualize x2apic mode
  KVM: nVMX: Prepare for using hardware MSR bitmap
  ...

s390/hypfs: Add diagnose 0c support

2015-02-10T15:38:58+00:00

With this feature, you can read the CPU performance metrics provided by the
z/VM diagnose 0C. This then allows to get the management time for each
online CPU of the guest where the diagnose is executed.

The new debugfs file /sys/kernel/debug/s390_hypfs/diag_0c exports the
diag0C binary data to user space via an open/read/close interface.

The binary data consists out of a header structure followed by an
array that contains the diagnose 0c data for each online CPU.

Signed-off-by: Michael Holzheu 
Signed-off-by: Martin Schwidefsky