Eric Lee / smarc-fsl-linux-kernel

27 Dec, 2011

1 commit

16 Mar, 2011

1 commit

  • 2c190da47   [S390] remove redundant stack check option ... Browse Code »

    Newer gcc versions offer an architecture-independent option to check
    the stack size and warn if it reaches a certain limit. This option
    already existed for s390 by using -mwarn-dynamicstack. Since one
    stack check option is enough remove the s390 specific stack check
    but keep the option that warns about dynamic stack usage because
    that is not covered by the generic option.

    Signed-off-by: Jan Glauber
    Signed-off-by: Martin Schwidefsky

    Jan Glauber
     

25 Oct, 2010

2 commits

04 Aug, 2010

1 commit

03 Aug, 2010

1 commit

  • 6588169d5   kbuild: allow assignment to {A,C,LD}FLAGS_MODULE on the command line ... Browse Code »

    It is now possible to assign options to AS, CC and LD
    on the command line - which is only used when building modules.

    {A,C,LD}FLAGS_MODULE was all used both in the top-level Makefile
    in the arch makefiles, thus users had no way to specify
    additional options to AS, CC, LD when building modules
    without overriding the original value.

    Introduce a new set of variables KBUILD_{A,C,LD}FLAGS_MODULE
    that is used by arch specific files and free up
    {A,C,LD}FLAGS_MODULE so they can be assigned on
    the command line.

    All arch Makefiles that used the old variables has been updated.

    Note: Previously we had a MODFLAGS variable for both
    AS and CC. But in favour of consistency this was dropped.
    So in some cases arch Makefile has one assignmnet replaced by
    two assignmnets.

    Note2: MODFLAGS was not documented and is dropped
    without any notice. I do not expect much/any breakage
    from this.

    Signed-off-by: Sam Ravnborg
    Cc: Denys Vlasenko
    Cc: Haavard Skinnemoen
    Cc: Mike Frysinger
    Cc: Tony Luck
    Cc: Geert Uytterhoeven
    Cc: Ralf Baechle
    Cc: Benjamin Herrenschmidt
    Cc: Martin Schwidefsky
    Cc: Chen Liqin
    Acked-by: Mike Frysinger [blackfin]
    Acked-by: Haavard Skinnemoen [avr32]
    Signed-off-by: Michal Marek

    Sam Ravnborg
     

17 May, 2010

1 commit

27 Feb, 2010

1 commit

11 Sep, 2009

1 commit

16 Jun, 2009

1 commit

25 Dec, 2008

1 commit

27 Apr, 2008

1 commit

  • b0c632db6   KVM: s390: arch backend for the kvm kernel module ... Browse Code »

    This patch contains the port of Qumranet's kvm kernel module to IBM zSeries
    (aka s390x, mainframe) architecture. It uses the mainframe's virtualization
    instruction SIE to run virtual machines with up to 64 virtual CPUs each.
    This port is only usable on 64bit host kernels, and can only run 64bit guest
    kernels. However, running 31bit applications in guest userspace is possible.

    The following source files are introduced by this patch
    arch/s390/kvm/kvm-s390.c similar to arch/x86/kvm/x86.c, this implements all
    arch callbacks for kvm. __vcpu_run calls back into
    sie64a to enter the guest machine context
    arch/s390/kvm/sie64a.S assembler function sie64a, which enters guest
    context via SIE, and switches world before and after that
    include/asm-s390/kvm_host.h contains all vital data structures needed to run
    virtual machines on the mainframe
    include/asm-s390/kvm.h defines kvm_regs and friends for user access to
    guest register content
    arch/s390/kvm/gaccess.h functions similar to uaccess to access guest memory
    arch/s390/kvm/kvm-s390.h header file for kvm-s390 internals, extended by
    later patches

    Acked-by: Martin Schwidefsky
    Signed-off-by: Christian Borntraeger
    Signed-off-by: Heiko Carstens
    Signed-off-by: Carsten Otte
    Signed-off-by: Avi Kivity

    Heiko Carstens
     

16 Oct, 2007

1 commit

  • 222d394d3   kbuild: enable 'make AFLAGS=...' to add additional options to AS ... Browse Code »

    The variable AFLAGS is a wellknown variable and the usage by
    kbuild may result in unexpected behaviour.
    On top of that several people over time has asked for a way to
    pass in additional flags to gcc.

    This patch replace use of AFLAGS with KBUILD_AFLAGS all over
    the tree.

    Patch was tested on following architectures:
    alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k, s390

    Signed-off-by: Sam Ravnborg

    Sam Ravnborg
     

15 Oct, 2007

1 commit

  • a0f97e06a   kbuild: enable 'make CFLAGS=...' to add additional options to CC ... Browse Code »

    The variable CFLAGS is a wellknown variable and the usage by
    kbuild may result in unexpected behaviour.
    On top of that several people over time has asked for a way to
    pass in additional flags to gcc.

    This patch replace use of CFLAGS with KBUILD_CFLAGS all over the
    tree and enabling one to use:
    make CFLAGS=...
    to specify additional gcc commandline options.

    One usecase is when trying to find gcc bugs but other
    use cases has been requested too.

    Patch was tested on following architectures:
    alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k

    Test was simple to do a defconfig build, apply the patch and check
    that nothing got rebuild.

    Signed-off-by: Sam Ravnborg

    Sam Ravnborg
     

16 Jul, 2007

1 commit

27 Apr, 2007

2 commits

  • 411ed3225   [S390] zfcpdump support. ... Browse Code »

    s390 machines provide hardware support for creating Linux dumps on SCSI
    disks. For creating a dump a special purpose dump Linux is used. The first
    32 MB of memory are saved by the hardware before the dump Linux is
    booted. Via an SCLP interface, the saved memory can be accessed from
    Linux. This patch exports memory and registers of the crashed Linux to
    userspace via a debugfs file. For more information refer to
    Documentation/s390/zfcpdump.txt, which is included in this patch.

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

    Michael Holzheu
     
  • be7962856   [S390] Improved kernel stack overflow checking. ... Browse Code »

    Recent cvs versions of gcc have support for an improved stack overflow
    checking that calculates the size of the guard size for each function.
    If the compiler accepts -mstack-size without -mstack-guard then the
    new stack check is available. We always want to use the new stack
    checker.

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

    Martin Schwidefsky
     

21 Feb, 2007

1 commit

04 Dec, 2006

1 commit

28 Sep, 2006

1 commit

04 Jul, 2006

1 commit

23 Jun, 2006

1 commit

  • 24bbb1faf   [PATCH] s390_hypfs filesystem ... Browse Code »

    On zSeries machines there exists an interface which allows the operating
    system to retrieve LPAR hypervisor accounting data. For example, it is
    possible to get usage data for physical and virtual cpus. In order to
    provide this information to user space programs, I implemented a new
    virtual Linux file system named 's390_hypfs' using the Linux 2.6 libfs
    framework. The name 's390_hypfs' stands for 'S390 Hypervisor Filesystem'.
    All the accounting information is put into different virtual files which
    can be accessed from user space. All data is represented as ASCII strings.

    When the file system is mounted the accounting information is retrieved and
    a file system tree is created with the attribute files containing the cpu
    information. The content of the files remains unchanged until a new update
    is made. An update can be triggered from user space through writing
    'something' into a special purpose update file.

    We create the following directory structure:

    /
    update
    cpus/

    type
    mgmtime

    ...
    hyp/
    type
    systems/

    cpus/

    type
    mgmtime
    cputime
    onlinetime

    ...

    cpus/
    ...

    - update: File to trigger update
    - cpus/: Directory for all physical cpus
    - cpus//: Directory for one physical cpu.
    - cpus//type: Type name of physical zSeries cpu.
    - cpus//mgmtime: Physical-LPAR-management time in microseconds.
    - hyp/: Directory for hypervisor information
    - hyp/type: Typ of hypervisor (currently only 'LPAR Hypervisor')
    - systems/: Directory for all LPARs
    - systems//: Directory for one LPAR.
    - systems//cpus//: Directory for the virtual cpus
    - systems//cpus//type: Typ of cpu.
    - systems//cpus//mgmtime:
    Accumulated number of microseconds during which a physical
    CPU was assigned to the logical cpu and the cpu time was
    consumed by the hypervisor and was not provided to
    the LPAR (LPAR overhead).

    - systems//cpus//cputime:
    Accumulated number of microseconds during which a physical CPU
    was assigned to the logical cpu and the cpu time was consumed
    by the LPAR.

    - systems//cpus//onlinetime:
    Accumulated number of microseconds during which the logical CPU
    has been online.

    As mount point for the filesystem /sys/hypervisor/s390 is created.

    The update process is triggered when writing 'something' into the
    'update' file at the top level hypfs directory. You can do this e.g.
    with 'echo 1 > update'. During the update the whole directory structure
    is deleted and built up again.

    Cc: Pekka Enberg
    Cc: Ingo Oeser
    Cc: Joern Engel
    Acked-by: Martin Schwidefsky
    Signed-off-by: Michael Holzheu
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Michael Holzheu
     

11 Apr, 2006

1 commit

07 Jan, 2006

1 commit

  • 347a8dc3b   [PATCH] s390: cleanup Kconfig ... Browse Code »

    Sanitize some s390 Kconfig options. We have ARCH_S390, ARCH_S390X,
    ARCH_S390_31, 64BIT, S390_SUPPORT and COMPAT. Replace these 6 options by
    S390, 64BIT and COMPAT.

    Signed-off-by: Martin Schwidefsky
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Martin Schwidefsky
     

07 Nov, 2005

1 commit

10 Sep, 2005

3 commits

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds