p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
linux_old1/arch/s390/kernel
History
Martin Schwidefsky 043d07084b [S390] Remove data execution protection 
The noexec support on s390 does not rely on a bit in the page table
entry but utilizes the secondary space mode to distinguish between
memory accesses for instructions vs. data. The noexec code relies
on the assumption that the cpu will always use the secondary space
page table for data accesses while it is running in the secondary
space mode. Up to the z9-109 class machines this has been the case.
Unfortunately this is not true anymore with z10 and later machines.
The load-relative-long instructions lrl, lgrl and lgfrl access the
memory operand using the same addressing-space mode that has been
used to fetch the instruction.
This breaks the noexec mode for all user space binaries compiled
with march=z10 or later. The only option is to remove the current
noexec support.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 		2011-05-23 10:24:28 +02:00
..
vdso32 [S390] vdso: get rid of redefinition warnings 2010-10-29 16:50:50 +02:00
vdso64 [S390] vdso: get rid of redefinition warnings 2010-10-29 16:50:50 +02:00
Makefile jump label: Add s390 support 2011-04-04 13:43:16 -04:00
asm-offsets.c [S390] Remove data execution protection 2011-05-23 10:24:28 +02:00
audit.c [S390] Get rid of a bunch of sparse warnings again. 2007-10-12 16:13:06 +02:00
audit.h [S390] Get rid of a bunch of sparse warnings again. 2007-10-12 16:13:06 +02:00
base.S [S390] Cleanup struct _lowcore usage and defines. 2010-02-26 22:37:31 +01:00
bitmap.c [S390] move EXPORT_SYMBOLs to definitions 2009-03-26 15:24:11 +01:00
compat_audit.c [S390] Get rid of a bunch of sparse warnings again. 2007-10-12 16:13:06 +02:00
compat_exec_domain.c [S390] Get rid of a lot of sparse warnings. 2007-02-05 21:16:47 +01:00
compat_linux.c BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
compat_linux.h Mark arguments to certain syscalls as being const 2010-08-13 16:53:13 -07:00
compat_ptrace.h [S390] ptrace cleanup 2011-01-05 12:47:31 +01:00
compat_signal.c [S390] 64-bit register support for 31-bit processes 2009-10-06 10:35:10 +02:00
compat_wrapper.S [S390] wire up sys_syncfs 2011-03-23 10:15:58 +01:00
cpcmd.c [S390] convert cpcmd printks to pr_xxx macros. 2008-12-25 13:39:19 +01:00
crash.c [S390] Get rid of a lot of sparse warnings. 2007-02-05 21:16:47 +01:00
debug.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
diag.c [S390] replace diag10() with diag10_range() function 2011-05-10 17:13:43 +02:00
dis.c [S390] disassembler: handle b280/spp instruction 2011-05-10 17:13:42 +02:00
early.c [S390] early: limit savesys cmd string handling 2011-03-23 10:15:14 +01:00
ebcdic.c [S390] Get rid of a lot of sparse warnings. 2007-02-05 21:16:47 +01:00
entry.S [S390] kernel: Initialize register 14 when starting new CPU 2011-05-10 17:13:42 +02:00
entry.h [S390] ptrace cleanup 2011-01-05 12:47:31 +01:00
entry64.S [S390] kernel: Initialize register 14 when starting new CPU 2011-05-10 17:13:42 +02:00
ftrace.c [S390] cleanup ftrace backend functions 2011-01-05 12:47:31 +01:00
head.S [S390] compile fix for latest binutils 2011-04-04 09:43:33 +02:00
head31.S [S390] correct address of _stext with CONFIG_SHARED_KERNEL=y 2010-05-12 09:32:26 +02:00
head64.S [S390] correct address of _stext with CONFIG_SHARED_KERNEL=y 2010-05-12 09:32:26 +02:00
init_task.c Use new __init_task_data macro in arch init_task.c files. 2009-09-21 06:27:08 +02:00
ipl.c sysfs: add struct file* to bin_attr callbacks 2010-05-21 09:37:31 -07:00
irq.c [S390] ap bus: add support for irq statistics 2011-01-05 12:47:26 +01:00
jump_label.c jump label: Add s390 support 2011-04-04 13:43:16 -04:00
kprobes.c [S390] ptrace cleanup 2011-01-05 12:47:31 +01:00
machine_kexec.c [S390] kexec: Disable ftrace during kexec 2011-03-15 17:08:24 +01:00
mcount.S [S390] cleanup ftrace backend functions 2011-01-05 12:47:31 +01:00
mcount64.S [S390] cleanup ftrace backend functions 2011-01-05 12:47:31 +01:00
mem_detect.c Fix IRQ flag handling naming 2010-10-07 14:08:55 +01:00
module.c modules: Fix module_bug_list list corruption race 2010-10-05 11:29:27 -07:00
nmi.c [S390] irq: have detailed statistics for interrupt types 2011-01-05 12:47:25 +01:00
process.c [S390] Randomize PIEs 2011-01-12 09:55:25 +01:00
processor.c [S390] prevent unneccesary loops_per_jiffy recalculation 2011-01-05 12:47:32 +01:00
ptrace.c [S390] ptrace cleanup 2011-01-05 12:47:31 +01:00
reipl.S [S390] Cleanup struct _lowcore usage and defines. 2010-02-26 22:37:31 +01:00
reipl64.S Fix common misspellings 2011-03-31 11:26:23 -03:00
relocate_kernel.S [S390] Reset infrastructure for re-IPL. 2006-12-04 15:40:26 +01:00
relocate_kernel64.S [S390] Reset infrastructure for re-IPL. 2006-12-04 15:40:26 +01:00
s390_ext.c [S390] extint: get rid of early code plus cleanup 2011-01-05 12:47:26 +01:00
s390_ksyms.c [S390] move EXPORT_SYMBOLs to definitions 2009-03-26 15:24:11 +01:00
sclp.S Merge branch 'for-next' into for-linus 2010-03-08 16:55:37 +01:00
setup.c [S390] Remove data execution protection 2011-05-23 10:24:28 +02:00
signal.c [S390] ptrace cleanup 2011-01-05 12:47:31 +01:00
smp.c sched: Provide scheduler_ipi() callback in response to smp_send_reschedule() 2011-04-14 08:52:32 +02:00
stacktrace.c [S390] Fix stacktrace compile bug. 2008-07-17 17:22:09 +02:00
suspend.c [S390] hibernate: make sure pfn_is_nosave handles lowcore pages 2009-09-22 22:58:45 +02:00
switch_cpu.S [S390] Fix parameter passing for smp_switch_to_cpu() 2011-04-04 09:43:32 +02:00
switch_cpu64.S [S390] Fix parameter passing for smp_switch_to_cpu() 2011-04-04 09:43:32 +02:00
swsusp_asm64.S Merge branch 'for-35' of git://repo.or.cz/linux-kbuild 2010-06-01 08:55:52 -07:00
sys_s390.c [S390] sys_personality: follow u_long to unsigned int conversion 2010-08-13 10:06:54 +02:00
syscalls.S [S390] wire up sys_syncfs 2011-03-23 10:15:58 +01:00
sysinfo.c [S390] topology: add SCHED_MC config option 2010-10-29 16:50:49 +02:00
time.c Fix common misspellings 2011-03-31 11:26:23 -03:00
topology.c [S390] topology: fix cpu masks for topology=off case 2010-10-29 16:50:50 +02:00
traps.c s390: remove task_show_regs 2011-02-15 07:34:16 -08:00
vdso.c mm: arch: rename in_gate_area_no_task to in_gate_area_no_mm 2011-03-23 16:36:55 -04:00
vmlinux.lds.S percpu: align percpu readmostly subsection to cacheline 2011-01-25 14:26:50 +01:00
vtime.c Fix common misspellings 2011-03-31 11:26:23 -03:00