kernel.git/arch/s390/kernel/vdso.c, branch linux-3.1.y

mm: arch: rename in_gate_area_no_task to in_gate_area_no_mm

2011-03-23T20:36:55Z

Now that gate vma's are referenced with respect to a particular mm and not a particular task it only makes sense to propagate the change to this predicate as well. Signed-off-by: Stephen Wilson Reviewed-by: Michel Lespinasse Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Signed-off-by: Al Viro

mm: arch: make in_gate_area take an mm_struct instead of a task_struct

2011-03-23T20:36:54Z

Morally, the question of whether an address lies in a gate vma should be asked with respect to an mm, not a particular task. Moreover, dropping the dependency on task_struct will help make existing and future operations on mm's more flexible and convenient. Signed-off-by: Stephen Wilson Reviewed-by: Michel Lespinasse Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Signed-off-by: Al Viro

mm: arch: make get_gate_vma take an mm_struct instead of a task_struct

2011-03-23T20:36:54Z

Morally, the presence of a gate vma is more an attribute of a particular mm than a particular task. Moreover, dropping the dependency on task_struct will help make both existing and future operations on mm's more flexible and convenient. Signed-off-by: Stephen Wilson Reviewed-by: Michel Lespinasse Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Signed-off-by: Al Viro

[S390] vdso: dont map at mmap_base

2011-01-12T08:55:24Z

The vdso object is currently always mapped with mm->mmap_base used as requested address. In case of flexible mmap layout this means it gets mapped above mmap_base and therefore potentially stealing a bit of address space that is reserved for the stack. In case of flexible mmap layout the object should be mapped below mmap base. For legacy mmap layout above. To fix this just don't request any specific address and let the mmap code figure out an address that fits. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

[S390] cleanup facility list handling

2010-10-25T14:10:21Z

Store the facility list once at system startup with stfl/stfle and reuse the result for all facility tests. Signed-off-by: Martin Schwidefsky

[S390] vdso: remove redundant check for CONFIG_64BIT

2010-05-17T08:00:16Z

This is a check for CONFIG_64BIT inside a block that is only active when CONFIG_64BIT is set. So the check is actually useless and potentially irritating. Signed-off-by: Christoph Egger Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

[S390] Cleanup struct _lowcore usage and defines.

2010-02-26T21:37:31Z

Use asm offsets to make sure the offset defines to struct _lowcore and its layout don't get out of sync. Also add a BUILD_BUG_ON() which checks that the size of the structure is sane. And while being at it change those sites which use odd casts to access the current lowcore. These should use S390_lowcore instead. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

[S390] Improve address space mode selection.

2009-12-07T11:51:33Z

Introduce user_mode to replace the two variables switch_amode and s390_noexec. There are three valid combinations of the old values: 1) switch_amode == 0 && s390_noexec == 0 2) switch_amode == 1 && s390_noexec == 0 3) switch_amode == 1 && s390_noexec == 1 They get replaced by 1) user_mode == HOME_SPACE_MODE 2) user_mode == PRIMARY_SPACE_MODE 3) user_mode == SECONDARY_SPACE_MODE The new kernel parameter user_mode=[primary,secondary,home] lets you choose the address space mode the user space processes should use. In addition the CONFIG_S390_SWITCH_AMODE config option is removed. Signed-off-by: Martin Schwidefsky

[S390] perf_counter: fix vdso detection

2009-10-06T08:35:09Z

s390 version of f2053f1a "powerpc/perf_counter: Fix vdso detection". Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

Use macros for .data.page_aligned section.

2009-09-21T04:27:08Z

This patch changes the remaining direct references to .data.page_aligned in C and assembly code to use the macros in include/linux/linkage.h. Signed-off-by: Tim Abbott Cc: Thomas Gleixner Cc: Ingo Molnar Cc: H. Peter Anvin Cc: Haavard Skinnemoen Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Martin Schwidefsky Signed-off-by: Sam Ravnborg