Paul Mackerras 08ae6cc15d [POWERPC] Allow exec faults on readable areas on classic 32-bit PowerPC ... Classic 32-bit PowerPC CPUs, and the early 64-bit PowerPC CPUs, don't provide a way to prevent execution from readable pages, that is, the MMU doesn't distinguish between data reads and instruction reads, although a different exception is taken for faults in data accesses and instruction accesses. Commit 9ba4ace39f, in the course of fixing another bug, added a check that meant that a page fault due to an instruction access would fail if the vma did not have the VM_EXEC flag set. This gives an inconsistent enforcement on these CPUs of the no-execute status of the vma (since reading from the page is sufficient to allow subsequent execution from it), and causes old versions of ppc32 glibc (2.2 and earlier) to fail, since they rely on executing the word before the GOT but don't have it marked executable. This fixes the problem by allowing execution from readable (or writable) areas on CPUs which do not provide separate control over data and instruction reads. Signed-off-by: Paul Mackerras <paulus@samba.org> Acked-by: Jon Loeliger <jdl@freescale.com>		2007-07-22 21:30:58 +10:00
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boot	Add phy-connection-type to gianfar nodes	2007-07-18 18:29:37 -04:00
configs	[POWERPC] Fix misspelled "CONFIG_CHECK_CACHE_COHERENCY" Kconfig option.	2007-07-22 21:30:58 +10:00
kernel	[CELL] oprofile: add support to OProfile for profiling CELL BE SPUs	2007-07-20 21:42:24 +02:00
lib	[POWERPC] rheap - eliminates internal fragments caused by alignment	2007-06-19 22:35:53 -05:00
math-emu	[POWERPC] ppc math-emu needs -fno-builtin-fabs for math.c and fabs.c	2006-09-26 15:24:35 +10:00
mm	[POWERPC] Allow exec faults on readable areas on classic 32-bit PowerPC	2007-07-22 21:30:58 +10:00
oprofile	[CELL] oprofile: add support to OProfile for profiling CELL BE SPUs	2007-07-20 21:42:24 +02:00
platforms	[POWERPC] Fix future firmware feature fixups function failure	2007-07-22 21:30:58 +10:00
sysdev	[CELL] driver for DDR2 memory on AXON	2007-07-20 21:41:42 +02:00
xmon	[POWERPC] fix showing xmon help	2007-07-22 21:30:58 +10:00
.gitignore	[POWERPC] Add files build to .gitignore	2006-12-04 20:41:29 +11:00
Kconfig	Start split out of common open firmware code	2007-07-20 13:28:41 +10:00
Kconfig.debug	Fix trivial typos in Kconfig* files	2007-05-09 07:12:20 +02:00
Makefile	Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild	2007-07-19 14:28:19 -07:00