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msm-4.14/arch/powerpc/kernel
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Benjamin Herrenschmidt cbc9565ee8 powerpc: Remove ksp_limit on ppc64 
We've been keeping that field in thread_struct for a while, it contains
the "limit" of the current stack pointer and is meant to be used for
detecting stack overflows.

It has a few problems however:

 - First, it was never actually *used* on 64-bit. Set and updated but
not actually exploited

 - When switching stack to/from irq and softirq stacks, it's update
is racy unless we hard disable interrupts, which is costly. This
is fine on 32-bit as we don't soft-disable there but not on 64-bit.

Thus rather than fixing 2 in order to implement 1 in some hypothetical
future, let's remove the code completely from 64-bit. In order to avoid
a clutter of ifdef's, we remove the updates from C code completely
during interrupt stack switching, and instead maintain it from the
asm helper that is used to do the stack switching in the first place.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-09-25 14:15:51 +10:00
..
vdso32
powerpc: Convert some mftb/mftbu into mfspr
2013-08-20 19:33:12 -05:00
vdso64
powerpc: Add VDSO version of time
2013-04-23 16:05:05 +10:00
.gitignore
…
align.c
powerpc: Never handle VSX alignment exceptions from kernel
2013-08-27 14:44:26 +10:00
asm-offsets.c
powerpc: Remove ksp_limit on ppc64
2013-09-25 14:15:51 +10:00
audit.c
…
btext.c
powerpc/btext: Fix CONFIG_PPC_EARLY_DEBUG_BOOTX on ppc32
2013-08-27 16:01:23 +10:00
cacheinfo.c
powerpc: Make device tree accesses in cache info code endian safe
2013-08-14 15:33:27 +10:00
cacheinfo.h
…
clock.c
powerpc: various straight conversions from module.h --> export.h
2011-10-31 19:30:44 -04:00
compat_audit.c
…
cpu_setup_6xx.S
…
cpu_setup_44x.S
…
cpu_setup_a2.S
powerpc: Enforce usage of RA 0-R31 where possible
2012-07-10 19:18:35 +10:00
cpu_setup_fsl_booke.S
powerpc/85xx: Add machine check handler to fix PCIe erratum on mpc85xx
2013-07-30 15:50:07 -05:00
cpu_setup_pa6t.S
…
cpu_setup_power.S
powerpc: Fix TLB cleanup at boot on POWER8
2013-05-24 18:13:44 +10:00
cpu_setup_ppc970.S
powerpc, KVM: Split HVMODE_206 cpu feature bit into separate HV and architecture bits
2011-07-12 13:16:58 +03:00
cputable.c
Merge remote-tracking branch 'scott/next' into next
2013-08-09 16:01:40 +10:00
crash_dump.c
powerpc: Remove savemaxmem parameter setup
2013-07-03 16:08:03 -07:00
crash.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
dbell.c
powerpc: Add accounting for Doorbell interrupts
2013-04-18 15:59:55 +10:00
dma-iommu.c
powerpc/dma-iommu: Fix IOMMU window check
2012-08-24 20:26:07 +10:00
dma-swiotlb.c
powerpc/swiotlb: Enable at early stage and disable if not necessary
2012-09-12 14:57:09 -05:00
dma.c
powerpc/kernel: Remove uses of abs_to_virt() and virt_to_abs()
2012-09-05 15:19:30 +10:00
eeh_cache.c
powerpc/eeh: Remove reference to PCI device
2013-07-24 14:18:46 +10:00
eeh_dev.c
powerpc/eeh: Move common part to kernel directory
2013-06-20 17:05:35 +10:00
eeh_driver.c
powerpc/eeh: Fix unbalanced enable for IRQ
2013-07-24 14:18:49 +10:00
eeh_event.c
powerpc/eeh: Use interruptible sleep in keehd
2013-06-25 17:24:41 +10:00
eeh_pe.c
powerpc/eeh: Don't use pci_dev during BAR restore
2013-07-24 14:18:49 +10:00
eeh_sysfs.c
powerpc/eeh: Introdce flag to protect sysfs
2013-07-24 14:18:49 +10:00
eeh.c
powerpc/eeh: Add missing procfs entry for PowerNV
2013-08-09 18:06:47 +10:00
entry_32.S
powerpc/32bit:Store temporary result in r0 instead of r8
2013-06-01 08:29:27 +10:00
entry_64.S
powerpc: Cleanup handling of the DSCR bit in the FSCR register
2013-08-27 15:05:22 +10:00
epapr_hcalls.S
powerpc: Add paravirt idle loop for 64-bit Book-E
2013-03-13 14:19:36 -05:00
epapr_paravirt.c
powerpc/85xx: Move ePAPR paravirt initialization earlier
2013-08-07 18:38:06 -05:00
exceptions-64e.S
powerpc/ppc64: Rename SOFT_DISABLE_INTS with RECONCILE_IRQ_STATE
2013-08-14 14:57:47 +10:00
exceptions-64s.S
Merge branch 'merge' into next
2013-08-27 15:03:30 +10:00
fadump.c
mm/ppc: use common help functions to free reserved pages
2013-04-29 15:54:30 -07:00
firmware.c
powerpc: fix implicit use of cache.h in kernel/firmware.c
2011-10-31 19:30:41 -04:00
fpu.S
powerpc: Add FP/VSX and VMX register load functions for transactional memory
2013-02-15 16:58:52 +11:00
fsl_booke_entry_mapping.S
…
ftrace.c
powerpc/ftrace: Trace function graph entry before updating index
2012-07-27 11:42:34 +10:00
head_8xx.S
powerpc: Remove the empty giveup_fpu() function on 32bit kernel
2013-08-14 14:59:50 +10:00
head_32.S
powerpc: Call do_page_fault() with interrupts off
2012-03-09 10:55:08 +11:00
head_40x.S
powerpc: Remove the empty giveup_fpu() function on 32bit kernel
2013-08-14 14:59:50 +10:00
head_44x.S
powerpc: Remove the empty giveup_fpu() function on 32bit kernel
2013-08-14 14:59:50 +10:00
head_64.S
powerpc: Align p_toc
2013-08-14 11:50:19 +10:00
head_booke.h
powerpc: Fix interrupt range check on debug exception
2013-05-02 10:31:01 +10:00
head_fsl_booke.S
powerpc: Remove the empty giveup_fpu() function on 32bit kernel
2013-08-14 14:59:50 +10:00
hw_breakpoint.c
powerpc/hw_brk: Fix off by one error when validating DAWR region end
2013-07-02 08:20:49 +10:00
ibmebus.c
ibmebus: convert of_platform_driver to platform_driver
2013-06-12 12:37:26 +01:00
idle_6xx.S
powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly
2012-07-11 14:18:22 +10:00
idle_book3e.S
powerpc: Add paravirt idle loop for 64-bit Book-E
2013-03-13 14:19:36 -05:00
idle_e500.S
powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly
2012-07-11 14:18:22 +10:00
idle_power4.S
powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly
2012-07-11 14:18:22 +10:00
idle_power7.S
powerpc/powernv: Always go into nap mode when CPU is offline
2012-09-05 16:05:20 +10:00
idle.c
powerpc/idle: Convert use of typedef ctl_table to struct ctl_table
2013-07-01 11:10:35 +10:00
io-workarounds.c
powerpc: Better split CONFIG_PPC_INDIRECT_PIO and CONFIG_PPC_INDIRECT_MMIO
2013-08-14 14:57:50 +10:00
io.c
powerpc/powernv: Add PIO accessors for Power8 LPC bus
2013-08-14 14:58:08 +10:00
iomap.c
powerpc: switch to GENERIC_PCI_IOMAP
2011-11-28 21:13:18 +02:00
iommu.c
PTR_RET is now PTR_ERR_OR_ZERO(): Replace most.
2013-07-15 11:25:01 +09:30
irq.c
powerpc: Remove ksp_limit on ppc64
2013-09-25 14:15:51 +10:00
isa-bridge.c
POWERPC: drivers: remove __dev* attributes.
2013-01-03 15:57:04 -08:00
jump_label.c
powerpc: Fix build breakage in jump_label.c
2011-11-16 14:25:19 +11:00
kgdb.c
powerpc/kgdb: Removed kmalloc returned value cast
2013-04-18 13:03:56 +10:00
kprobes.c
powerpc: Move the single step enable code to a generic path
2013-06-20 16:55:09 +10:00
kvm_emul.S
KVM: PPC: Not optimizing MSR_CE and MSR_ME with paravirt.
2012-05-30 11:43:11 +02:00
kvm.c
mm: enhance free_reserved_area() to support poisoning memory with zero
2013-07-03 16:07:32 -07:00
l2cr_6xx.S
…
legacy_serial.c
powerpc: Little endian fixes for legacy_serial.c
2013-08-14 15:33:32 +10:00
machine_kexec_32.c
treewide: convert uses of ATTRIB_NORETURN to __noreturn
2012-01-12 20:13:03 -08:00
machine_kexec_64.c
powerpc/kexec: Fix kexec when using VMX optimised memcpy
2013-05-14 14:36:23 +10:00
machine_kexec.c
powerpc+of: Rename the drivers/of prom_* functions to of_*
2012-11-15 12:56:52 +11:00
Makefile
powerpc/pseries: Move lparcfg.c to platforms/pseries
2013-08-28 11:20:54 +10:00
misc_32.S
powerpc: Remove ksp_limit on ppc64
2013-09-25 14:15:51 +10:00
misc_64.S
powerpc/irq: Run softirqs off the top of the irq stack
2013-09-25 14:15:36 +10:00
misc.S
powerpc: switch to generic sys_execve()/kernel_execve()
2012-09-30 23:35:51 -04:00
module_32.c
powerpc: Fix kernel panic during kernel module load
2012-06-08 19:59:08 +10:00
module_64.c
powerpc: Build kernel with -mcmodel=medium
2013-01-10 17:00:31 +11:00
module.c
powerpc: remove non-required uses of include <linux/module.h>
2011-10-31 19:30:44 -04:00
msi.c
…
nvram_64.c
powerpc/nvram64: Need return the related error code on failure occurs
2013-07-01 11:46:56 +10:00
of_platform.c
powerpc/eeh: Fix crash when adding a device in a slot with DDW
2013-01-10 17:01:58 +11:00
paca.c
powerpc: Fix little endian lppaca, slb_shadow and dtl_entry
2013-08-14 15:33:35 +10:00
pci_32.c
powerpc/pci: Support per-aperture memory offset
2013-05-06 13:40:40 +10:00
pci_64.c
powerpc/pci: Don't use bitfield for force_32bit_msi
2013-08-14 11:50:25 +10:00
pci_dn.c
powerpc: Make PCI device node device tree accesses endian safe
2013-08-14 15:33:31 +10:00
pci_of_scan.c
powerpc: Make OF PCI device tree accesses endian safe
2013-08-14 15:33:30 +10:00
pci-common.c
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
2013-09-06 10:49:42 -07:00
pci-hotplug.c
powerpc/pci: Partial tree hotplug support
2013-07-24 14:18:48 +10:00
pmc.c
bug.h: add include of it to various implicit C users
2012-02-29 17:15:08 -05:00
ppc32.h
powerpc: switch to generic old sigaction()
2013-02-03 18:16:10 -05:00
ppc_ksyms.c
powerpc: Remove the empty giveup_fpu() function on 32bit kernel
2013-08-14 14:59:50 +10:00
ppc_save_regs.S
…
proc_powerpc.c
proc_powerpc: switch to fixed_size_llseek()
2013-06-29 12:57:50 +04:00
process.c
powerpc: Remove ksp_limit on ppc64
2013-09-25 14:15:51 +10:00
prom_init_check.sh
powerpc/pmac: Early debug output on screen on 64-bit macs
2013-08-14 14:57:40 +10:00
prom_init.c
powerpc: Fix section mismatch warning for prom_rtas_call
2013-09-11 11:39:38 +10:00
prom_parse.c
powerpc: of_parse_dma_window should take a __be32 *dma_window
2013-08-14 15:33:26 +10:00
prom.c
Device tree core updates for v3.12
2013-09-10 13:53:52 -07:00
ptrace32.c
powerpc: fixing ptrace_get_reg to return an error
2013-04-18 13:03:57 +10:00
ptrace.c
ptrace/powerpc: revert "hw_breakpoints: Fix racy access to ptrace breakpoints"
2013-07-09 10:33:25 -07:00
reloc_32.S
powerpc: Don't flush/invalidate the d/icache for an unknown relocation type
2013-07-01 11:10:34 +10:00
reloc_64.S
…
rtas_flash.c
powerpc/rtas_flash: Fix validate_flash buffer overflow issue
2013-05-14 14:36:26 +10:00
rtas_pci.c
powerpc/kernel: Cleanup on rtas_pci.c
2013-04-18 13:03:48 +10:00
rtas-proc.c
…
rtas-rtc.c
powerpc/rtas-rtc: remove sideeffects of printk_ratelimit
2011-06-29 15:30:43 +10:00
rtas.c
powerpc: Make RTAS calls endian safe
2013-08-14 15:33:22 +10:00
rtasd.c
powerpc/pseries: Add /proc interface to control topology updates
2013-04-26 16:08:26 +10:00
setup_32.c
powerpc/85xx: Move ePAPR paravirt initialization earlier
2013-08-07 18:38:06 -05:00
setup_64.c
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
2013-09-06 10:49:42 -07:00
setup-common.c
powerpc: More little endian fixes for setup-common.c
2013-08-14 15:33:24 +10:00
setup.h
…
signal_32.c
powerpc: Fix VRSAVE handling
2013-08-14 14:57:18 +10:00
signal_64.c
powerpc: Remove the redundant flush_fp_to_thread() in setup_sigcontext()
2013-08-14 14:59:38 +10:00
signal.c
powerpc/tm: Fix userspace stack corruption on signal delivery for active transactions
2013-06-01 08:29:23 +10:00
signal.h
powerpc/tm: Fix userspace stack corruption on signal delivery for active transactions
2013-06-01 08:29:23 +10:00
smp-tbsync.c
POWERPC: drivers: remove __dev* attributes.
2013-01-03 15:57:04 -08:00
smp.c
powerpc: Export cpu_to_chip_id() to fix build error
2013-09-11 11:39:37 +10:00
stacktrace.c
powerpc: various straight conversions from module.h --> export.h
2011-10-31 19:30:44 -04:00
suspend.c
…
swsusp_32.S
…
swsusp_64.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
swsusp_asm64.S
powerpc: add Book E support to 64-bit hibernation
2013-08-23 19:39:26 -05:00
swsusp_booke.S
powerpc/mpc85xx: invalidate TLB after hibernation resume
2013-07-30 15:50:08 -05:00
swsusp.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
sys_ppc32.c
unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE
2013-05-09 13:46:38 -04:00
syscalls.c
powerpc: Fix personality handling in ppc64_personality()
2012-08-24 20:26:07 +10:00
sysfs.c
powerpc: Delete __cpuinit usage from all users
2013-07-01 11:10:36 +10:00
systbl_chk.c
…
systbl_chk.sh
…
systbl.S
…
tau_6xx.c
…
time.c
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
2013-09-06 10:49:42 -07:00
tm.S
Merge branch 'merge' into next
2013-08-27 15:03:30 +10:00
traps.c
powerpc: Cleanup handling of the DSCR bit in the FSCR register
2013-08-27 15:05:22 +10:00
udbg_16550.c
powerpc/wsp: Fix early debug build
2013-08-16 10:59:27 +10:00
udbg.c
powerpc: Add a configuration option for early BootX/OpenFirmware debug
2013-06-20 16:55:12 +10:00
uprobes.c
uretprobes/powerpc: Hijack return address
2013-04-13 15:31:56 +02:00
vdso.c
powerpc: Delete __cpuinit usage from all users
2013-07-01 11:10:36 +10:00
vecemu.c
…
vector.S
powerpc: Add FP/VSX and VMX register load functions for transactional memory
2013-02-15 16:58:52 +11:00
vio.c
powerpc: Make device tree accesses in VIO subsystem endian safe
2013-08-14 15:33:29 +10:00
vmlinux.lds.S
powerpc/modules: Module CRC relocation fix causes perf issues
2013-07-24 14:18:43 +10:00