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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-09 23:29:57 -0800 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-09 23:29:57 -0800 |
commit | 0b6ca82af83a79f3d1001c8a0701ed34ac38126e (patch) | |
tree | def8eb112c513b21e826e370f2f34249e97914eb /Documentation | |
parent | bfc1de0c40a26c6daa46c297e28138aecb4c5664 (diff) | |
parent | fac84939609a683503947f41eb93e1917d026263 (diff) | |
download | kernel_samsung_smdk4412-0b6ca82af83a79f3d1001c8a0701ed34ac38126e.zip kernel_samsung_smdk4412-0b6ca82af83a79f3d1001c8a0701ed34ac38126e.tar.gz kernel_samsung_smdk4412-0b6ca82af83a79f3d1001c8a0701ed34ac38126e.tar.bz2 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: (32 commits)
x86: cpa, strict range check in try_preserve_large_page()
x86: cpa, enable CONFIG_DEBUG_PAGEALLOC on 64-bit
x86: cpa, use page pool
x86: introduce page pool in cpa
x86: DEBUG_PAGEALLOC: enable after mem_init()
brk: help text typo fix
lguest: accept guest _PAGE_PWT page table entries
x86 PM: update stale comments
x86 PM: consolidate suspend and hibernation code
x86 PM: rename 32-bit files in arch/x86/power
x86 PM: move 64-bit hibernation files to arch/x86/power
x86: trivial printk optimizations
x86: fix early_ioremap pagetable ops
x86: construct 32-bit boot time page tables in native format.
x86, core: remove CONFIG_FORCED_INLINING
x86: avoid unused variable warning in mm/init_64.c
x86: fixup more paravirt fallout
brk: document randomize_va_space and CONFIG_COMPAT_BRK (was Re:
x86: fix sparse warnings in acpi/bus.c
x86: fix sparse warning in topology.c
...
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/feature-removal-schedule.txt | 9 | ||||
-rw-r--r-- | Documentation/sysctl/kernel.txt | 29 |
2 files changed, 29 insertions, 9 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 2039f47..4d3aa51 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -111,15 +111,6 @@ Who: Christoph Hellwig <hch@lst.de> --------------------------- -What: CONFIG_FORCED_INLINING -When: June 2006 -Why: Config option is there to see if gcc is good enough. (in january - 2006). If it is, the behavior should just be the default. If it's not, - the option should just go away entirely. -Who: Arjan van de Ven - ---------------------------- - What: eepro100 network driver When: January 2007 Why: replaced by the e100 driver diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index 8984a53..dc8801d 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -41,6 +41,7 @@ show up in /proc/sys/kernel: - pid_max - powersave-nap [ PPC only ] - printk +- randomize_va_space - real-root-dev ==> Documentation/initrd.txt - reboot-cmd [ SPARC only ] - rtsig-max @@ -280,6 +281,34 @@ send before ratelimiting kicks in. ============================================================== +randomize-va-space: + +This option can be used to select the type of process address +space randomization that is used in the system, for architectures +that support this feature. + +0 - Turn the process address space randomization off by default. + +1 - Make the addresses of mmap base, stack and VDSO page randomized. + This, among other things, implies that shared libraries will be + loaded to random addresses. Also for PIE-linked binaries, the location + of code start is randomized. + + With heap randomization, the situation is a little bit more + complicated. + There a few legacy applications out there (such as some ancient + versions of libc.so.5 from 1996) that assume that brk area starts + just after the end of the code+bss. These applications break when + start of the brk area is randomized. There are however no known + non-legacy applications that would be broken this way, so for most + systems it is safe to choose full randomization. However there is + a CONFIG_COMPAT_BRK option for systems with ancient and/or broken + binaries, that makes heap non-randomized, but keeps all other + parts of process address space randomized if randomize_va_space + sysctl is turned on. + +============================================================== + reboot-cmd: (Sparc only) ??? This seems to be a way to give an argument to the Sparc |