Daniel Cashman 9e08f57d68 x86: mm: support ARCH_MMAP_RND_BITS ... x86: arch_mmap_rnd() uses hard-coded values, 8 for 32-bit and 28 for 64-bit, to generate the random offset for the mmap base address. This value represents a compromise between increased ASLR effectiveness and avoiding address-space fragmentation. Replace it with a Kconfig option, which is sensibly bounded, so that platform developers may choose where to place this compromise. Keep default values as new minimums. Signed-off-by: Daniel Cashman <dcashman@google.com> Cc: Russell King <linux@arm.linux.org.uk> Acked-by: Kees Cook <keescook@chromium.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Don Zickus <dzickus@redhat.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Heinrich Schuchardt <xypron.glpk@gmx.de> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: David Rientjes <rientjes@google.com> Cc: Mark Salyzyn <salyzyn@android.com> Cc: Jeff Vander Stoep <jeffv@google.com> Cc: Nick Kralevich <nnk@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Hector Marco-Gisbert <hecmargi@upv.es> Cc: Borislav Petkov <bp@suse.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2016-01-14 16:00:49 -08:00
..
boot	x86/mm: Fix regression with huge pages on PAE	2015-12-04 09:14:27 +01:00
configs
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2016-01-12 18:51:14 -08:00
entry	Merge branch 'work.copy_file_range' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-01-12 16:30:34 -08:00
ia32	Merge branch 'x86-headers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-11-03 21:05:40 -08:00
include	Power management and ACPI updates for v4.5-rc1	2016-01-12 20:25:09 -08:00
kernel	Not much new with tracing for this release. Mostly just clean ups and	2016-01-12 20:04:15 -08:00
kvm	* s390: Support for runtime instrumentation within guests,	2016-01-12 13:22:12 -08:00
lguest	Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-01-11 16:26:03 -08:00
lib	Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-01-11 16:46:20 -08:00
math-emu	Merge branch 'x86-headers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-11-03 21:05:40 -08:00
mm	x86: mm: support ARCH_MMAP_RND_BITS	2016-01-14 16:00:49 -08:00
net	bpf, x86: detect/optimize loading 0 immediates	2015-12-18 16:04:51 -05:00
oprofile
pci	Merge branches 'acpi-pci' and 'pm-pci'	2015-12-04 14:01:02 +01:00
platform	Power management and ACPI updates for v4.5-rc1	2016-01-12 20:25:09 -08:00
power	x86/pm: Introduce quirk framework to save/restore extra MSR registers around suspend/resume	2015-11-26 10:04:53 +01:00
purgatory
ras	x86/ras/mce_amd_inj: Inject bank 4 errors on the NBC	2015-10-12 16:15:48 +02:00
realmode
tools
um	um: Fix build error and kconfig for i386	2016-01-10 21:49:49 +01:00
video
xen	xen: features and fixes for 4.5-rc0	2016-01-12 13:05:36 -08:00
.gitignore
Kbuild
Kconfig	x86: mm: support ARCH_MMAP_RND_BITS	2016-01-14 16:00:49 -08:00
Kconfig.cpu	x86/Kconfig/cpus: Fix/complete CPU type help texts	2015-10-21 11:12:56 +02:00
Kconfig.debug	libnvdimm for 4.5	2016-01-13 19:15:14 -08:00
Makefile	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2015-11-04 09:11:12 -08:00
Makefile_32.cpu
Makefile.um