Sam bobroff 96d0161086 powerpc: Correct DSCR during TM context switch ... Correct the DSCR SPR becoming temporarily corrupted if a task is context switched during a transaction. The problem occurs while suspending the task and is caused by saving the DSCR to thread.dscr after it has already been set to the CPU's default value: __switch_to() calls __switch_to_tm() which calls tm_reclaim_task() which calls tm_reclaim_thread() which calls tm_reclaim() where the DSCR is set to the CPU's default __switch_to() calls _switch() where thread.dscr is set to the DSCR When the task is resumed, it's transaction will be doomed (as usual) and the DSCR SPR will be corrupted, although the checkpointed value will be correct. Therefore the DSCR will be immediately corrected by the transaction aborting, unless it has been suspended. In that case the incorrect value can be seen by the task until it resumes the transaction. The fix is to treat the DSCR similarly to the TAR and save it early in __switch_to(). A program exposing the problem is added to the kernel self tests as: tools/testing/selftests/powerpc/tm/tm-resched-dscr. Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com> CC: <stable@vger.kernel.org> [v3.10+] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>		2014-06-11 17:02:56 +10:00
..
8xx_immap.h
agp.h
archrandom.h	random: Add arch_has_random[_seed]()	2014-03-19 22:24:08 -04:00
asm-compat.h	powerpc: Fix little endian lppaca, slb_shadow and dtl_entry	2013-08-14 15:33:35 +10:00
asm-offsets.h
async_tx.h
atomic.h	arch,powerpc: Convert smp_mb__*()	2014-04-18 14:20:41 +02:00
backlight.h
barrier.h	arch,powerpc: Convert smp_mb__*()	2014-04-18 14:20:41 +02:00
bitops.h	arch,powerpc: Convert smp_mb__*()	2014-04-18 14:20:41 +02:00
bootx.h
btext.h	powerpc/pmac: Early debug output on screen on 64-bit macs	2013-08-14 14:57:40 +10:00
bug.h
bugs.h
cache.h	powerpc: purge all the prefetched instructions for the coherent icache flush	2013-12-02 14:13:47 +11:00
cacheflush.h	powerpc: Remove the symbol __flush_icache_range	2013-08-14 14:56:44 +10:00
cell-pmu.h
cell-regs.h
checksum.h	powerpc: Use generic checksum code in little endian	2013-10-11 16:48:39 +11:00
cmpxchg.h	powerpc: Add support for the optimised lockref implementation	2014-01-28 14:45:43 +11:00
code-patching.h	powerpc: Add ABIv2 support to ppc_function_entry	2014-04-23 10:05:21 +10:00
compat.h	powerpc/compat: 32-bit little endian machine name is ppcle, not ppc	2014-03-24 10:16:04 +11:00
context_tracking.h	powerpc: No need to use dot symbols when branching to a function	2014-04-23 10:05:16 +10:00
cpm.h
cpm1.h
cpm2.h
cputable.h	powerpc: Add a cpu feature CPU_FTR_PMAO_BUG	2014-03-24 09:48:24 +11:00
cputhreads.h	powerpc: Add threads_per_subcore	2014-05-28 13:35:35 +10:00
cputime.h
current.h
dbdma.h
dbell.h
dcr-generic.h
dcr-mmio.h	of: Stop naming platform_device using dcr address	2014-05-23 08:28:02 +09:00
dcr-native.h
dcr-regs.h
dcr.h
debug.h	powerpc: Fix smp_processor_id() in preemptible splat in set_breakpoint	2014-05-20 10:54:06 +10:00
delay.h
device.h	powerpc: Add iommu domain pointer to device archdata	2013-08-14 11:38:34 +02:00
disassemble.h	KVM: PPC: BOOK3S: Remove open coded make_dsisr in alignment handler	2014-05-30 14:26:25 +02:00
div64.h
dma-mapping.h	powerpc/powernv: Add iommu DMA bypass support for IODA2	2014-02-11 16:07:37 +11:00
dma.h
edac.h
eeh.h	Revert "powerpc/powernv: Fundamental reset on PLX ports"	2014-05-20 10:20:49 +10:00
eeh_event.h
ehv_pic.h
elf.h	powerpc: Clear ELF personality flag if ELFv2 is not requested.	2014-05-20 10:55:59 +10:00
emergency-restart.h
emulated_ops.h	powerpc: Add lq/stq emulation	2014-04-09 12:53:28 +10:00
epapr_hcalls.h	kvm/powerpc: move kvm_hypercall0() and friends to epapr_hypercall0()	2014-01-09 10:14:57 +01:00
exception-64e.h	powerpc: No need to use dot symbols when branching to a function	2014-04-23 10:05:16 +10:00
exception-64s.h	powerpc: No need to use dot symbols when branching to a function	2014-04-23 10:05:16 +10:00
exec.h
fadump.h	include/linux/crash_dump.h: add vmcore_cleanup() prototype	2014-04-07 16:36:06 -07:00
fb.h
feature-fixups.h
firmware.h
fixmap.h	powerpc: use generic fixmap.h	2014-01-23 16:36:54 -08:00
floppy.h
fs_pd.h
fsl_85xx_cache_sram.h
fsl_gtm.h
fsl_guts.h
fsl_hcalls.h
fsl_lbc.h	powerpc/85xx: handle the eLBC error interrupt if it exists in dts	2014-01-10 17:19:27 -06:00
fsl_pamu_stash.h	iommu/fsl: Add additional iommu attributes required by the PAMU driver.	2013-08-14 11:38:34 +02:00
ftrace.h	powerpc: Remove function descriptors and dot symbols on new ABI	2014-04-23 10:05:20 +10:00
futex.h
gpio.h
grackle.h
hardirq.h	powerpc: Make irq_stat.timers_irqs counting more specific	2013-12-02 14:14:50 +11:00
heathrow.h
highmem.h
hugetlb.h	powerpc/mm: Add new "set" flag argument to pte/pmd update function	2014-02-17 11:19:35 +11:00
hvcall.h	powerpc: Add hvcalls for 24x7 and gpci (Get Performance Counter Info)	2014-03-24 09:48:28 +11:00
hvconsole.h
hvcserver.h
hvsi.h	powerpc/hvsi: Fix endian issues in HVSI driver	2013-10-11 16:48:53 +11:00
hw_breakpoint.h	powerpc: Fix smp_processor_id() in preemptible splat in set_breakpoint	2014-05-20 10:54:06 +10:00
hw_irq.h	powerpc: Access local paca after hard irq disabled	2013-07-24 14:18:44 +10:00
hydra.h
i8259.h
ibmebus.h
ide.h
immap_cpm2.h
immap_qe.h
io-defs.h
io-workarounds.h
io.h	powerpc: Add real mode cache inhibited IO accessors	2013-12-05 16:08:21 +11:00
io_event_irq.h
iommu.h	powerpc/powernv: Add iommu DMA bypass support for IODA2	2014-02-11 16:07:37 +11:00
ipic.h
irq.h	powerpc/irq: Run softirqs off the top of the irq stack	2013-09-25 14:15:36 +10:00
irq_regs.h
irqflags.h	powerpc/tracing: TRACE_WITH_FRAME_BUFFER creates invalid stack frames	2014-04-23 10:05:25 +10:00
jump_label.h	compiler/gcc4: Add quirk for 'asm goto' miscompilation bug	2013-10-11 07:39:14 +02:00
Kbuild	locking/mcs: Allow architecture specific asm files to be used for contended case	2014-02-09 21:18:52 +01:00
kdebug.h
kdump.h
kexec.h
keylargo.h
kgdb.h
kmap_types.h
kprobes.h	powerpc/kprobes: Fix ABIv2 issues with kprobe_lookup_name	2014-04-23 10:05:33 +10:00
kvm_44x.h
kvm_asm.h	KVM: PPC: Book3S PR: Handle Facility interrupt and FSCR	2014-05-30 14:26:22 +02:00
kvm_book3s.h	KVM: PPC: Make shared struct aka magic page guest endian	2014-05-30 14:26:21 +02:00
kvm_book3s_32.h	KVM: PPC: Book3S PR: Allocate kvm_vcpu structs from kvm_vcpu_cache	2013-10-17 14:45:05 +02:00
kvm_book3s_64.h	KVM: PPC: BOOK3S: HV: Add mixed page-size support for guest	2014-05-30 14:26:24 +02:00
kvm_book3s_asm.h	KVM: PPC: Book3S PR: Handle Facility interrupt and FSCR	2014-05-30 14:26:22 +02:00
kvm_booke.h	KVM: PPC: Make shared struct aka magic page guest endian	2014-05-30 14:26:21 +02:00
kvm_booke_hv_asm.h	powerpc/booke64: Use SPRG_TLB_EXFRAME on bolted handlers	2014-03-19 19:57:15 -05:00
kvm_fpu.h
kvm_host.h	KVM: PPC: Disable NX for old magic page using guests	2014-05-30 14:26:24 +02:00
kvm_para.h	kvm/powerpc: move kvm_hypercall0() and friends to epapr_hypercall0()	2014-01-09 10:14:57 +01:00
kvm_ppc.h	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2014-06-10 18:54:22 -07:00
libata-portmap.h
linkage.h	powerpc: Remove function descriptors and dot symbols on new ABI	2014-04-23 10:05:20 +10:00
local.h
local64.h
lppaca.h	powerpc: Make slb_shadow a local	2013-12-09 11:40:25 +11:00
lv1call.h
machdep.h	powerpc: Allow ppc_md platform hook to override memory_block_size_bytes	2014-06-05 13:20:39 +10:00
macio.h
mc146818rtc.h
mce.h	powerpc/book3s: Recover from MC in sapphire on SCOM read via MMIO.	2014-03-07 15:52:10 +11:00
mediabay.h
mman.h
mmu-8xx.h
mmu-40x.h
mmu-44x.h
mmu-book3e.h	powerpc: Remove platforms/wsp and associated pieces	2014-06-11 16:35:38 +10:00
mmu-hash32.h
mmu-hash64.h	powerpc: Book 3S MMU little endian support	2013-10-11 16:48:26 +11:00
mmu.h	powerpc/e6500: TLB miss handler with hardware tablewalk support	2014-01-09 17:52:19 -06:00
mmu_context.h
mmzone.h
module.h	powerpc/modules: Create module_trampoline_target()	2014-04-23 10:05:34 +10:00
mpc5xxx.h
mpc6xx.h
mpc8xx.h
mpc52xx.h
mpc52xx_psc.h
mpc85xx.h	powerpc/85xx: Add support for 85xx cpu type detection	2013-08-23 19:01:03 -05:00
mpc5121.h	powerpc/512x: clk: support MPC5121/5123/5125 SoC variants	2014-01-12 18:59:36 +01:00
mpc8260.h
mpic.h	powerpc/msi: Fix compile error on mpc83xx	2013-08-07 18:38:04 -05:00
mpic_msgr.h
mpic_timer.h
msi_bitmap.h
mutex.h
nvram.h
ohare.h
opal.h	powerpc/powernv: Fix endian issues in memory error handling code	2014-06-05 13:20:39 +10:00
oprofile_impl.h
paca.h	powerpc: Fix regression of per-CPU DSCR setting	2014-05-28 13:35:40 +10:00
page.h	powerpc: Fix 64K page size support for PPC44x	2013-10-30 16:00:51 +11:00
page_32.h
page_64.h
parport.h
pasemi_dma.h
pci-bridge.h	powerpc/pci: Don't use bitfield for force_32bit_msi	2013-08-14 11:50:25 +10:00
pci.h	PCI: Turn pcibios_penalize_isa_irq() into a weak function	2014-05-27 16:23:58 -06:00
percpu.h
perf_event.h
perf_event_fsl_emb.h	powerpc/perf: increase the perf HW events to 6	2013-08-07 18:38:03 -05:00
perf_event_server.h	powerpc/perf: Define perf_event_print_debug() to print PMU register values	2014-03-24 09:48:23 +11:00
pgalloc-32.h	powerpc: Fix PTE page address mismatch in pgtable ctor/dtor	2013-12-10 11:25:05 +11:00
pgalloc-64.h	powerpc: Fix PTE page address mismatch in pgtable ctor/dtor	2013-12-10 11:25:05 +11:00
pgalloc.h
pgtable-ppc32.h
pgtable-ppc64-4k.h
pgtable-ppc64-64k.h
pgtable-ppc64.h	powerpc/mm: Add new "set" flag argument to pte/pmd update function	2014-02-17 11:19:35 +11:00
pgtable.h	x86: define _PAGE_NUMA by reusing software bits on the PMD and PTE levels	2014-06-04 16:53:55 -07:00
plpar_wrappers.h	pseries: Add H_SET_MODE to change exception endianness	2013-11-21 09:19:16 +11:00
pmac_feature.h
pmac_low_i2c.h
pmac_pfunc.h
pmc.h
pmi.h
ppc-opcode.h	powerpc/bpf: Fix DIVWU instruction opcode	2013-10-31 16:19:20 +11:00
ppc-pci.h	powerpc/eeh: No hotplug on permanently removed dev	2014-04-28 17:34:32 +10:00
ppc4xx.h
ppc4xx_ocm.h
ppc_asm.h	Merge branch 'merge' into next	2014-05-28 13:30:12 +10:00
probes.h
processor.h	powerpc/powernv: Make it possible to skip the IRQHAPPENED check in power7_nap()	2014-05-28 13:35:35 +10:00
prom.h	of: push struct boot_param_header and defines into powerpc	2014-04-30 00:59:20 -05:00
ps3.h	powerpc: Delete non-required instances of include <linux/init.h>	2014-01-15 13:46:44 +11:00
ps3av.h
ps3gpu.h
ps3stor.h
pte-8xx.h
pte-40x.h
pte-44x.h
pte-book3e.h	powerpc: book3e: _PAGE_LENDIAN must be _PAGE_ENDIAN	2013-10-17 14:49:37 +02:00
pte-common.h
pte-fsl-booke.h
pte-hash32.h
pte-hash64-4k.h
pte-hash64-64k.h
pte-hash64.h	powerpc/mm: Enable _PAGE_NUMA for book3s	2013-12-09 11:40:30 +11:00
ptrace.h	powerpc: Increase stack redzone for 64-bit userspace to 512 bytes	2014-02-28 18:06:26 +11:00
qe.h
qe_ic.h
reg.h	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2014-06-10 18:54:22 -07:00
reg_8xx.h
reg_a2.h	powerpc: Remove platforms/wsp and associated pieces	2014-06-11 16:35:38 +10:00
reg_booke.h	KVM: PPC: E500: Add dcbtls emulation	2014-05-30 14:26:17 +02:00
reg_fsl_emb.h	powerpc/perf: Add e6500 PMU driver	2013-08-07 18:38:04 -05:00
rheap.h
rio.h
rtas.h	powerpc/le: Enable RTAS events support	2014-04-07 10:33:12 +10:00
rtc.h
runlatch.h
scatterlist.h
scom.h	powerpc/scom: Enable 64-bit addresses	2013-11-06 14:13:49 +11:00
sections.h	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2014-06-10 18:54:22 -07:00
serial.h
setjmp.h
setup.h	powerpc: Clean up panic_timeout usage	2013-11-26 12:12:28 +01:00
sfp-machine.h	powerpc: Put FP/VSX and VR state into structures	2013-10-11 17:26:49 +11:00
shmparam.h
signal.h
smp.h	powerpc/kvm/book3s_hv: Rework the secondary inhibit code	2014-05-28 13:35:34 +10:00
smu.h
sparsemem.h
spinlock.h	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2014-01-27 21:11:26 -08:00
spinlock_types.h
spu.h	switch elf_coredump_extra_notes_write() to dump_emit()	2013-11-09 00:16:24 -05:00
spu_csa.h
spu_info.h
spu_priv1.h
sstep.h
string.h	powerpc: memcpy optimization for 64bit LE	2014-04-30 15:26:18 +10:00
swab.h
swiotlb.h
switch_to.h	powerpc: Correct DSCR during TM context switch	2014-06-11 17:02:56 +10:00
synch.h
syscall.h
syscalls.h
systbl.h	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2014-06-10 18:54:22 -07:00
tce.h
termios.h
thread_info.h	powerpc: Don't corrupt transactional state when using FP/VMX in kernel	2014-01-15 13:59:11 +11:00
time.h	powerpc: Implement tick broadcast IPI as a fixed IPI message	2014-03-05 15:55:04 +11:00
timex.h	powerpc/8xx: mfspr SPRN_TBRx in lieu of mftb/mftbu is not supported	2013-11-22 16:56:48 -06:00
tlb.h
tlbflush.h
tm.h	Merge branch 'kvm-ppchv-next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into kvm-next	2014-03-29 15:44:05 +01:00
topology.h	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2014-06-10 18:54:22 -07:00
trace.h
tsi108.h
tsi108_irq.h
tsi108_pci.h
types.h
uaccess.h
ucc.h
ucc_fast.h
ucc_slow.h
udbg.h	powerpc: Cleanup udbg_16550 and add support for LPC PIO-only UARTs	2013-08-14 14:58:15 +10:00
uic.h
unaligned.h	powerpc: Make unaligned accesses endian-safe for powerpc	2013-12-30 14:02:29 +11:00
uninorth.h
unistd.h	sys_sgetmask/sys_ssetmask: add CONFIG_SGETMASK_SYSCALL	2014-06-04 16:54:14 -07:00
uprobes.h	uprobes/powerpc: Kill arch_uprobe->ainsn	2013-11-20 16:31:01 +01:00
user.h
vdso.h	powerpc: Link VDSOs at 0x0	2014-02-17 11:19:37 +11:00
vdso_datapage.h
vga.h
vio.h	powerpc: Delete non-required instances of include <linux/init.h>	2014-01-15 13:46:44 +11:00
word-at-a-time.h	powerpc: word-at-a-time optimization for 64-bit Little Endian	2013-10-31 16:19:16 +11:00
xics.h
xilinx_intc.h
xilinx_pci.h
xmon.h
xor.h	powerpc: Add VMX optimised xor for RAID5	2013-10-30 16:02:28 +11:00