16 Mar, 2011
1 commit
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Implement write protection for kernel modules text and read-only
data sections by implementing set_memory_[ro|rw] on s390.
Since s390 has no execute bit in the pte's NX is not supported.set_memory_[ro|rw] will only work on normal pages and not on
large pages, so in case a large page should be modified bail
out with a warning.Signed-off-by: Jan Glauber
Signed-off-by: Martin Schwidefsky
05 Jan, 2011
1 commit
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Make use of def_bool and def_tristate where possible and add sensible
defaults to the config symbols where applicable. This shortens the
defconfig file by another ~40 lines.Signed-off-by: Martin Schwidefsky
10 Nov, 2010
1 commit
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Provide the devmem_is_allowed() routine to restrict access to
kernel memory from userspace.
Set the CONFIG_STRICT_DEVMEM config option to switch on checking.Signed-off-by: Hendrik Brueckner
Signed-off-by: Martin Schwidefsky
27 Feb, 2010
1 commit
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Same as on x86 and sparc, besides the fact that enabling the option
will just emit compile time warnings instead of errors.
Keeps allyesconfig kernels compiling.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
03 Apr, 2009
1 commit
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This fixes a build failure with generic debug pagealloc:
mm/debug-pagealloc.c: In function 'set_page_poison':
mm/debug-pagealloc.c:8: error: 'struct page' has no member named 'debug_flags'
mm/debug-pagealloc.c: In function 'clear_page_poison':
mm/debug-pagealloc.c:13: error: 'struct page' has no member named 'debug_flags'
mm/debug-pagealloc.c: In function 'page_poison':
mm/debug-pagealloc.c:18: error: 'struct page' has no member named 'debug_flags'
mm/debug-pagealloc.c: At top level:
mm/debug-pagealloc.c:120: error: redefinition of 'kernel_map_pages'
include/linux/mm.h:1278: error: previous definition of 'kernel_map_pages' was here
mm/debug-pagealloc.c: In function 'kernel_map_pages':
mm/debug-pagealloc.c:122: error: 'debug_pagealloc_enabled' undeclared (first use in this function)by fixing
- debug_flags should be in struct page
- define DEBUG_PAGEALLOC config option for all architecturesSigned-off-by: Akinobu Mita
Reported-by: Alexander Beregalov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Apr, 2009
1 commit
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CONFIG_DEBUG_PAGEALLOC is now supported by x86, powerpc, sparc64, and
s390. This patch implements it for the rest of the architectures by
filling the pages with poison byte patterns after free_pages() and
verifying the poison patterns before alloc_pages().This generic one cannot detect invalid page accesses immediately but
invalid read access may cause invalid dereference by poisoned memory and
invalid write access can be detected after a long delay.Signed-off-by: Akinobu Mita
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
05 Feb, 2008
1 commit
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Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
04 Jul, 2006
1 commit
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irqtrace support for s390.
Signed-off-by: Heiko Carstens
Signed-off-by: Ingo Molnar
Cc: Martin Schwidefsky
Cc: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Apr, 2005
1 commit
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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!
