kernel/arch/xtensa, branch linux-2.6.32.y

signal: Define __ARCH_HAS_SA_RESTORER so we know whether to clear sa_restorer

2013-06-10T09:42:21Z

Vaguely based on upstream commit 574c4866e33d 'consolidate kernel-side struct sigaction declarations'. flush_signal_handlers() needs to know whether sigaction::sa_restorer is defined, not whether SA_RESTORER is defined. Define the __ARCH_HAS_SA_RESTORER macro to indicate this. Signed-off-by: Ben Hutchings Cc: Al Viro Signed-off-by: Greg Kroah-Hartman Signed-off-by: Willy Tarreau

xtensa: prevent arbitrary read in ptrace

2011-08-08T17:23:13Z

commit 0d0138ebe24b94065580bd2601f8bb7eb6152f56 upstream. Prevent an arbitrary kernel read. Check the user pointer with access_ok() before copying data in. [akpm@linux-foundation.org: s/EIO/EFAULT/] Signed-off-by: Dan Rosenberg Cc: Christian Zankel Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

xtensa: set ARCH_KMALLOC_MINALIGN

2010-07-05T18:10:50Z

commit 498900fc9cd1adbad1ba6b55ed9d8f2f5d655ca3 upstream. Architectures that handle DMA-non-coherent memory need to set ARCH_KMALLOC_MINALIGN to make sure that kmalloc'ed buffer is DMA-safe: the buffer doesn't share a cache with the others. Signed-off-by: FUJITA Tomonori Cc: Chris Zankel Acked-by: Pekka Enberg Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

untangle the do_mremap() mess

2010-01-18T18:19:11Z

This backports the following upstream commits all as one patch: 54f5de709984bae0d31d823ff03de755f9dcac54 ecc1a8993751de4e82eb18640d631dae1f626bd6 1a0ef85f84feb13f07b604fcf5b90ef7c2b5c82f f106af4e90eadd76cfc0b5325f659619e08fb762 097eed103862f9c6a97f2e415e21d1134017b135 935874141df839c706cd6cdc438e85eb69d1525e 0ec62d290912bb4b989be7563851bc364ec73b56 c4caa778157dbbf04116f0ac2111e389b5cd7a29 2ea1d13f64efdf49319e86c87d9ba38c30902782 570dcf2c15463842e384eb597a87c1e39bead99b 564b3bffc619dcbdd160de597b0547a7017ea010 0067bd8a55862ac9dd212bd1c4f6f5bff1ca1301 f8b7256096a20436f6d0926747e3ac3d64c81d24 8c7b49b3ecd48923eb64ff57e07a1cdb74782970 9206de95b1ea68357996ec02be5db0638a0de2c1 2c6a10161d0b5fc047b5bd81b03693b9af99fab5 05d72faa6d13c9d857478a5d35c85db9adada685 bb52d6694002b9d632bb355f64daa045c6293a4e e77414e0aad6a1b063ba5e5750c582c75327ea6a aa65607373a4daf2010e8c3867b6317619f3c1a3 Backport done by Greg Kroah-Hartman. Only minor tweaks were needed. Cc: David S. Miller Cc: Hugh Dickins Cc: Paul Mundt Cc: Russell King Cc: Linus Torvalds Signed-off-by: Al Viro Signed-off-by: Greg Kroah-Hartman

headers: remove sched.h from interrupt.h

2009-10-11T18:20:58Z

After m68k's task_thread_info() doesn't refer to current, it's possible to remove sched.h from interrupt.h and not break m68k! Many thanks to Heiko Carstens for allowing this. Signed-off-by: Alexey Dobriyan

xtensa: Cleanup linker script using new linker script macros.

2009-09-25T00:16:21Z

Signed-off-by: Tim Abbott Cc: Chris Zankel Acked-by: Sam Ravnborg Signed-off-by: Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next

2009-09-23T22:37:02Z

* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next: (30 commits) Use macros for .data.page_aligned section. Use macros for .bss.page_aligned section. Use new __init_task_data macro in arch init_task.c files. kbuild: Don't define ALIGN and ENTRY when preprocessing linker scripts. arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0 kbuild: add static to prototypes kbuild: fail build if recordmcount.pl fails kbuild: set -fconserve-stack option for gcc 4.5 kbuild: echo the record_mcount command gconfig: disable "typeahead find" search in treeviews kbuild: fix cc1 options check to ensure we do not use -fPIC when compiling checkincludes.pl: add option to remove duplicates in place markup_oops: use modinfo to avoid confusion with underscored module names checkincludes.pl: provide usage helper checkincludes.pl: close file as soon as we're done with it ctags: usability fix kernel hacking: move STRIP_ASM_SYMS from General gitignore usr/initramfs_data.cpio.bz2 and usr/initramfs_data.cpio.lzma kbuild: Check if linker supports the -X option kbuild: introduce ld-option ... Fix trivial conflict in scripts/basic/fixdep.c

mm: add MAP_HUGETLB for mmaping pseudo-anonymous huge page regions

2009-09-22T14:17:41Z

Add a flag for mmap that will be used to request a huge page region that will look like anonymous memory to user space. This is accomplished by using a file on the internal vfsmount. MAP_HUGETLB is a modifier of MAP_ANONYMOUS and so must be specified with it. The region will behave the same as a MAP_ANONYMOUS region using small pages. The patch also adds the MAP_STACK flag, which was previously defined only on some architectures but not on others. Since MAP_STACK is meant to be a hint only, architectures can define it without assigning a specific meaning to it. Signed-off-by: Arnd Bergmann Cc: Eric B Munson Cc: Hugh Dickins Cc: David Rientjes Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

arches: drop superfluous casts in nr_free_pages() callers

2009-09-22T14:17:34Z

Commit 96177299416dbccb73b54e6b344260154a445375 ("Drop free_pages()") modified nr_free_pages() to return 'unsigned long' instead of 'unsigned int'. This made the casts to 'unsigned long' in most callers superfluous, so remove them. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Geert Uytterhoeven Reviewed-by: Christoph Lameter Acked-by: Ingo Molnar Acked-by: Russell King Acked-by: David S. Miller Acked-by: Kyle McMartin Acked-by: WANG Cong Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Haavard Skinnemoen Cc: Mikael Starvik Cc: "Luck, Tony" Cc: Hirokazu Takata Cc: Ralf Baechle Cc: David Howells Acked-by: Benjamin Herrenschmidt Cc: Martin Schwidefsky Cc: Paul Mundt Cc: Chris Zankel Cc: Michal Simek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ksm: define MADV_MERGEABLE and MADV_UNMERGEABLE

2009-09-22T14:17:31Z

The out-of-tree KSM used ioctls on fds cloned from /dev/ksm to register a memory area for merging: we prefer now to use an madvise(2) interface. This patch just defines MADV_MERGEABLE (to tell KSM it may merge pages in this area found identical to pages in other mergeable areas) and MADV_UNMERGEABLE (to undo that). Most architectures use asm-generic, but alpha, mips, parisc, xtensa need their own definitions: included here for mmotm convenience, but we'll probably want to split this and feed pieces to arch maintainers. Based upon earlier patches by Chris Wright and Izik Eidus. Signed-off-by: Hugh Dickins Signed-off-by: Chris Wright Signed-off-by: Izik Eidus Cc: Michael Kerrisk Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Ralf Baechle Cc: Kyle McMartin Cc: Helge Deller Cc: Chris Zankel Cc: Andrea Arcangeli Cc: Rik van Riel Cc: Wu Fengguang Cc: Balbir Singh Cc: Hugh Dickins Cc: KAMEZAWA Hiroyuki Cc: Lee Schermerhorn Cc: Avi Kivity Cc: Nick Piggin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds