Eric Lee / linux-smarc-t335x-v3.2

27 Jan, 2007

1 commit

  • a1f3bb9ae   [PATCH] Fix CONFIG_COMPAT_VDSO ... Browse Code »

    I wouldn't mind if CONFIG_COMPAT_VDSO went away entirely. But if it's there,
    it should work properly. Currently it's quite haphazard: both real vma and
    fixmap are mapped, both are put in the two different AT_* slots, sysenter
    returns to the vma address rather than the fixmap address, and core dumps yet
    are another story.

    This patch makes CONFIG_COMPAT_VDSO disable the real vma and use the fixmap
    area consistently. This makes it actually compatible with what the old vdso
    implementation did.

    Signed-off-by: Roland McGrath
    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Benjamin Herrenschmidt
    Cc: Andi Kleen
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Roland McGrath
     

07 Dec, 2006

1 commit

02 Oct, 2006

1 commit

  • e9ff3990f   [PATCH] namespaces: utsname: switch to using uts namespaces ... Browse Code »

    Replace references to system_utsname to the per-process uts namespace
    where appropriate. This includes things like uname.

    Changes: Per Eric Biederman's comments, use the per-process uts namespace
    for ELF_PLATFORM, sunrpc, and parts of net/ipv4/ipconfig.c

    [jdike@addtoit.com: UML fix]
    [clg@fr.ibm.com: cleanup]
    [akpm@osdl.org: build fix]
    Signed-off-by: Serge E. Hallyn
    Cc: Kirill Korotaev
    Cc: "Eric W. Biederman"
    Cc: Herbert Poetzl
    Cc: Andrey Savochkin
    Signed-off-by: Cedric Le Goater
    Cc: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Serge E. Hallyn
     

13 Sep, 2006

1 commit

  • 651c923a4   [PATCH] headers_check: move kernel-only #includes within <asm-i386/elf.h> ... Browse Code »

    Some files which don't exist in userspace were being included unconditionally
    in asm-i386/elf.h. Move the offending #includes down a few lines so that
    they're protected by #ifdef __KERNEL__

    In fact, we probably want to kill off all userspace use of asm/elf.h -- but we
    aren't there yet, so we should at least make it possible to include it for
    now.

    Signed-off-by: David Woodhouse
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Woodhouse
     

28 Jun, 2006

1 commit

  • e6e5494cb   [PATCH] vdso: randomize the i386 vDSO by moving it into a vma ... Browse Code »

    Move the i386 VDSO down into a vma and thus randomize it.

    Besides the security implications, this feature also helps debuggers, which
    can COW a vma-backed VDSO just like a normal DSO and can thus do
    single-stepping and other debugging features.

    It's good for hypervisors (Xen, VMWare) too, which typically live in the same
    high-mapped address space as the VDSO, hence whenever the VDSO is used, they
    get lots of guest pagefaults and have to fix such guest accesses up - which
    slows things down instead of speeding things up (the primary purpose of the
    VDSO).

    There's a new CONFIG_COMPAT_VDSO (default=y) option, which provides support
    for older glibcs that still rely on a prelinked high-mapped VDSO. Newer
    distributions (using glibc 2.3.3 or later) can turn this option off. Turning
    it off is also recommended for security reasons: attackers cannot use the
    predictable high-mapped VDSO page as syscall trampoline anymore.

    There is a new vdso=[0|1] boot option as well, and a runtime
    /proc/sys/vm/vdso_enabled sysctl switch, that allows the VDSO to be turned
    on/off.

    (This version of the VDSO-randomization patch also has working ELF
    coredumping, the previous patch crashed in the coredumping code.)

    This code is a combined work of the exec-shield VDSO randomization
    code and Gerd Hoffmann's hypervisor-centric VDSO patch. Rusty Russell
    started this patch and i completed it.

    [akpm@osdl.org: cleanups]
    [akpm@osdl.org: compile fix]
    [akpm@osdl.org: compile fix 2]
    [akpm@osdl.org: compile fix 3]
    [akpm@osdl.org: revernt MAXMEM change]
    Signed-off-by: Ingo Molnar
    Signed-off-by: Arjan van de Ven
    Cc: Gerd Hoffmann
    Cc: Rusty Russell
    Cc: Zachary Amsden
    Cc: Andi Kleen
    Cc: Jan Beulich
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Ingo Molnar
     

07 Nov, 2005

1 commit

  • 8c65b4a60   [PATCH] fix remaining missing includes ... Browse Code »

    Fix more include file problems that surfaced since I submitted the previous
    fix-missing-includes.patch. This should now allow not to include sched.h
    from module.h, which is done by a followup patch.

    Signed-off-by: Tim Schmielau
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Tim Schmielau
     

08 Sep, 2005

1 commit

  • 36d57ac4a   [PATCH] auxiliary vector cleanups ... Browse Code »

    The size of auxiliary vector is fixed at 42 in linux/sched.h. But it isn't
    very obvious when looking at linux/elf.h. This patch adds AT_VECTOR_SIZE
    so that we can change it if necessary when a new vector is added.

    Because of include file ordering problems, doing this necessitated the
    extraction of the AT_* symbols into a standalone header file.

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

    H. J. Lu
     

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