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Anton Blanchard d839088cae powerpc: Randomise lower bits of stack address 
Randomise the lower bits of the stack address. More randomisation is good for
security but the scatter can also help with SMT threads that share an L1. A
quick test case shows this working:

int main()
{
	int sp;
	printf("%x\n", (unsigned long)&sp & 4095);
}

before:
80
80
80
80
80

after:
610
490
300
6b0
d80

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-02-23 15:53:20 +11:00
..
vdso32
powerpc/mm: Introduce MMU features
2008-12-21 14:21:16 +11:00
vdso64
powerpc/mm: Introduce MMU features
2008-12-21 14:21:16 +11:00
.gitignore
…
align.c
powerpc: Fix load/store float double alignment handler
2009-02-23 15:53:05 +11:00
asm-offsets.c
Merge commit 'kumar/kumar-next' into next
2009-01-13 13:59:03 +11:00
audit.c
…
btext.c
…
cacheinfo.c
powerpc/cacheinfo: Rename cache_dir per-cpu variable
2009-01-13 14:48:02 +11:00
cacheinfo.h
powerpc: Rewrite sysfs processor cache info code
2009-01-08 16:25:10 +11:00
clock.c
…
compat_audit.c
…
cpu_setup_6xx.S
…
cpu_setup_44x.S
powerpc/virtex5: Fix Virtex5 machine check handling
2008-12-05 14:34:26 -05:00
cpu_setup_fsl_booke.S
powerpc/fsl-booke: Cleanup init/exception setup to be runtime
2009-01-28 18:16:50 -06:00
cpu_setup_pa6t.S
…
cpu_setup_ppc970.S
…
cputable.c
powerpc/fsl-booke: Cleanup init/exception setup to be runtime
2009-01-28 18:16:50 -06:00
crash_dump.c
powerpc: Unify opcode definitions and support
2009-02-23 10:48:56 +11:00
crash.c
…
dbell.c
powerpc: Add support for using doorbells for SMP IPI
2009-02-23 15:53:03 +11:00
dma-iommu.c
powerpc: Change u64/s64 to a long long integer type
2009-01-13 14:47:59 +11:00
dma.c
powerpc: Add sync_*_for_* to dma_ops
2008-12-03 20:46:36 +11:00
entry_32.S
powerpc: Unify opcode definitions and support
2009-02-23 10:48:56 +11:00
entry_64.S
powerpc64, ftrace: save toc only on modules for function graph
2009-02-23 10:48:54 +11:00
firmware.c
…
fpu.S
…
ftrace.c
powerpc: Unify opcode definitions and support
2009-02-23 10:48:56 +11:00
head_8xx.S
…
head_32.S
powerpc/32: Add the ability for a classic ppc kernel to be loaded at 32M
2008-12-23 15:13:29 +11:00
head_40x.S
…
head_44x.S
powerpc/44x: Support 16K/64K base page sizes on 44x
2008-12-29 09:53:25 +11:00
head_64.S
powerpc/powermac: Fix occasional SMP boot failure
2009-01-13 14:48:03 +11:00
head_booke.h
powerpc: Unify opcode definitions and support
2009-02-23 10:48:56 +11:00
head_fsl_booke.S
powerpc: Add support for using doorbells for SMP IPI
2009-02-23 15:53:03 +11:00
ibmebus.c
powerpc: struct device - replace bus_id with dev_name(), dev_set_name()
2008-12-16 15:53:38 +11:00
idle_6xx.S
…
idle_e500.S
…
idle_power4.S
…
idle.c
powerpc: ftrace, do not latency trace idle
2008-11-20 10:51:15 -08:00
init_task.c
take init_fs to saner place
2008-12-31 18:07:42 -05:00
io.c
…
iomap.c
…
iommu.c
powerpc: Change u64/s64 to a long long integer type
2009-01-13 14:47:59 +11:00
irq.c
cpumask: make irq_set_affinity() take a const struct cpumask
2008-12-13 21:20:26 +10:30
isa-bridge.c
…
kgdb.c
…
kprobes.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2009-01-07 11:31:52 -08:00
l2cr_6xx.S
…
legacy_serial.c
…
lparcfg.c
powerpc: Change u64/s64 to a long long integer type
2009-01-13 14:47:59 +11:00
machine_kexec_32.c
…
machine_kexec_64.c
powerpc/32: Setup OF properties for kdump
2008-12-23 15:13:29 +11:00
machine_kexec.c
powerpc/kexec: Check crash_base for relocatable kernel
2009-01-13 14:47:59 +11:00
Makefile
powerpc: Add support for using doorbells for SMP IPI
2009-02-23 15:53:03 +11:00
misc_32.S
powerpc/44x: Support 16K/64K base page sizes on 44x
2008-12-29 09:53:25 +11:00
misc_64.S
…
misc.S
…
module_32.c
powerpc/ppc32: ftrace, dynamic ftrace to handle modules
2008-11-20 10:52:53 -08:00
module_64.c
powerpc: Unify opcode definitions and support
2009-02-23 10:48:56 +11:00
module.c
powerpc/mm: Introduce MMU features
2008-12-21 14:21:16 +11:00
msi.c
…
nvram_64.c
…
of_device.c
powerpc: struct device - replace bus_id with dev_name(), dev_set_name()
2008-12-16 15:53:38 +11:00
of_platform.c
…
paca.c
powerpc: Update page-in counter for CMM
2008-11-05 22:08:28 +11:00
pci_32.c
powerpc/pci: Fix PCI<->OF matching of old style multifunc devices
2009-02-23 10:48:57 +11:00
pci_64.c
powerpc/pci: Move hose_list and pci_address_to_pio to pci-common
2009-02-11 16:00:07 +11:00
pci_dn.c
…
pci-common.c
powerpc/pci: Move hose_list and pci_address_to_pio to pci-common
2009-02-11 16:00:07 +11:00
pmc.c
…
ppc32.h
…
ppc_ksyms.c
powerpc: Export cacheable_memzero as its now used in a driver
2009-01-08 16:25:17 +11:00
ppc_save_regs.S
powerpc: Prepare xmon_save_regs for use with kdump
2008-12-23 15:13:28 +11:00
proc_ppc64.c
…
process.c
powerpc: Randomise lower bits of stack address
2009-02-23 15:53:20 +11:00
prom_init_check.sh
…
prom_init.c
powerpc: Use correct type in prom_init.c
2009-01-08 16:25:16 +11:00
prom_parse.c
PCI: powerpc: use generic pci_swizzle_interrupt_pin()
2009-01-07 11:12:52 -08:00
prom.c
powerpc: Allow debugging of LMBs with lmb=debug
2009-02-11 13:38:00 +11:00
ptrace32.c
…
ptrace.c
…
reloc_64.S
…
rtas_flash.c
…
rtas_pci.c
powerpc/pci: Fix various pseries PCI hotplug issues
2008-11-06 09:31:52 +11:00
rtas-proc.c
…
rtas-rtc.c
…
rtas.c
powerpc/pseries: Fix partition migration hang under load
2009-02-23 15:53:04 +11:00
setup_32.c
powerpc/32: Wire up the trampoline code for kdump
2008-12-23 15:13:29 +11:00
setup_64.c
powerpc: Remove unused ppc64_terminate_msg()
2009-02-11 13:38:00 +11:00
setup-common.c
…
setup.h
…
signal_32.c
powerpc: Fix msr check in compat_sys_swapcontext
2008-11-11 19:42:22 +11:00
signal_64.c
…
signal.c
…
signal.h
powerpc: Move is_32bit_task
2009-02-23 15:53:06 +11:00
smp-tbsync.c
powerpc: Silence software timebase sync
2008-11-05 22:08:28 +11:00
smp.c
Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2009-01-02 11:44:09 -08:00
softemu8xx.c
…
stacktrace.c
…
suspend.c
…
swsusp_32.S
powerpc/mm: Introduce MMU features
2008-12-21 14:21:16 +11:00
swsusp_64.c
…
swsusp_asm64.S
…
swsusp.c
powerpc/mm: Split mmu_context handling
2008-12-21 14:21:15 +11:00
sys_ppc32.c
…
syscalls.c
…
sysfs.c
powerpc: Rewrite sysfs processor cache info code
2009-01-08 16:25:10 +11:00
systbl_chk.c
…
systbl_chk.sh
…
systbl.S
…
tau_6xx.c
…
time.c
Merge branch 'cputime' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
2009-01-03 11:56:24 -08:00
traps.c
powerpc: Add support for using doorbells for SMP IPI
2009-02-23 15:53:03 +11:00
udbg_16550.c
…
udbg.c
…
vdso.c
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
2008-12-28 16:54:33 -08:00
vecemu.c
…
vector.S
…
vio.c
powerpc/pseries: Correct VIO bus accounting problem in CMO env.
2009-01-28 17:15:52 +11:00
vmlinux.lds.S
powerpc64: port of the function graph tracer
2009-02-23 10:48:53 +11:00