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linux/arch/powerpc/kernel
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Michael Neuling 92fb8690bd powerpc/tm: P9 disable transactionally suspended sigcontexts 
Unfortunately userspace can construct a sigcontext which enables
suspend. Thus userspace can force Linux into a path where trechkpt is
executed.

This patch blocks this from happening on POWER9 by sanity checking
sigcontexts passed in.

ptrace doesn't have this problem as only MSR SE and BE can be changed
via ptrace.

This patch also adds a number of WARN_ON()s in case we ever enter
suspend when we shouldn't. This should not happen, but if it does the
symptoms are soft lockup warnings which are not obviously TM related,
so the WARN_ON()s should make it obvious what's happening.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-10-21 09:36:28 +11:00
..
trace
powerpc/kprobes: Clean up jprobe detection in livepatch handler
2017-10-04 23:42:17 +11:00
vdso32
powerpc/time: refactor MFTB() to limit number of ifdefs
2017-08-10 23:32:09 +10:00
vdso64
powerpc/vdso64: Use double word compare on pointers
2016-09-29 15:17:57 +10:00
.gitignore
…
align.c
powerpc: Fix handling of alignment interrupt on dcbz instruction
2017-09-15 08:41:18 +10:00
asm-offsets.c
powerpc/powernv: Save/Restore additional SPRs for stop4 cpuidle
2017-08-01 21:01:20 +10:00
audit.c
…
btext.c
powerpc: Convert to using %pOF instead of full_name
2017-08-23 22:27:04 +10:00
cacheinfo.c
powerpc: Convert to using %pOF instead of full_name
2017-08-23 22:27:04 +10:00
cacheinfo.h
…
compat_audit.c
…
cpu_setup_6xx.S
powerpc: Various typo fixes
2016-06-14 13:58:26 +10:00
cpu_setup_44x.S
…
cpu_setup_fsl_booke.S
powerpc/cache: add cache flush operation for various e500
2016-03-04 23:44:51 -06:00
cpu_setup_pa6t.S
…
cpu_setup_power.S
powerpc/powernv: Fix local TLB flush for boot and MCE on POWER9
2017-07-11 12:53:53 +10:00
cpu_setup_ppc970.S
…
cputable.c
powerpc/8xx: Use symbolic PVR value
2017-08-10 23:32:18 +10:00
crash_dump.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
crash.c
powerpc/fadump: remove dependency with CONFIG_KEXEC
2017-05-08 17:15:11 -07:00
dbell.c
powerpc: Introduce msgsnd/doorbell barrier primitives
2017-04-13 23:34:33 +10:00
dma-iommu.c
powerpc: implement ->mapping_error
2017-06-28 06:54:33 -07:00
dma-swiotlb.c
treewide: Constify most dma_map_ops structures
2017-01-24 12:23:35 -05:00
dma.c
powerpc: merge __dma_set_mask into dma_set_mask
2017-06-28 06:54:55 -07:00
dt_cpu_ftrs.c
powerpc/powernv: Fix local TLB flush for boot and MCE on POWER9
2017-07-11 12:53:53 +10:00
eeh_cache.c
powerpc/eeh: Fix pr_debug()s in eeh_cache.c
2016-07-08 22:09:50 +10:00
eeh_dev.c
powerpc/eeh: Create PHB PEs after EEH is initialized
2017-09-21 14:56:00 +10:00
eeh_driver.c
powerpc/eeh: Remove unnecessary pointer to phb from eeh_dev
2017-08-31 14:26:09 +10:00
eeh_event.c
powerpc/pci: Always print PHB and PE numbers as hexadecimal
2016-11-22 11:57:07 +11:00
eeh_pe.c
powerpc/eeh: Remove unnecessary config_addr from eeh_dev
2017-08-31 14:26:09 +10:00
eeh_sysfs.c
powerpc/eeh: Remove unnecessary config_addr from eeh_dev
2017-08-31 14:26:09 +10:00
eeh.c
powerpc/powernv: Rework EEH initialization on powernv
2017-09-26 11:19:07 +10:00
entry_32.S
powerpc/32: Avoid risk of unrecoverable TLBmiss inside entry_32.S
2017-08-15 22:55:53 +10:00
entry_64.S
powerpc/asm: Convert .llong directives to .8byte
2017-08-31 14:26:47 +10:00
epapr_hcalls.S
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
epapr_paravirt.c
…
exceptions-64e.S
powerpc/64e: Fix hang when debugging programs with relocated kernel
2017-04-30 01:05:18 -05:00
exceptions-64s.S
powerpc/mce: Hookup derror (load/store) UE errors
2017-10-16 23:12:01 +11:00
fadump.c
powerpc/powernv: Use kernel crash path for machine checks
2017-08-31 14:26:04 +10:00
firmware.c
…
fpu.S
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
fsl_booke_entry_mapping.S
powerpc/fsl: Force coherent memory on e500mc derivatives
2015-08-07 23:00:01 -05:00
head_8xx.S
powerpc/8xx: Reduce DTLB miss handler by one insn
2017-08-15 22:55:55 +10:00
head_32.S
powerpc/mm: Use symbolic constants for filtering SRR1 bits on ISIs
2017-08-03 16:06:44 +10:00
head_40x.S
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
head_44x.S
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
head_64.S
powerpc/asm: Convert .llong directives to .8byte
2017-08-31 14:26:47 +10:00
head_booke.h
…
head_fsl_booke.S
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
hw_breakpoint.c
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next
2017-02-18 21:37:14 +11:00
idle_6xx.S
…
idle_book3e.S
…
idle_book3s.S
Revert "KVM: PPC: Book3S HV: POWER9 does not require secondary thread management"
2017-10-19 15:28:04 +11:00
idle_e500.S
powerpc/e500mc: Remove dead L2 flushing code in idle_e500.S
2015-06-02 21:37:19 -05:00
idle_power4.S
…
idle.c
…
ima_kexec.c
powerpc: ima: send the kexec buffer to the next kernel
2016-12-20 09:48:44 -08:00
io-workarounds.c
powerpc: Convert to using %pOF instead of full_name
2017-08-23 22:27:04 +10:00
io.c
…
iomap.c
powerpc: Move isa bridge definitions to separate include
2017-01-31 13:54:17 +11:00
iommu.c
powerpc/iommu: Use permission-specific DEVICE_ATTR variants
2017-09-01 16:42:54 +10:00
irq.c
powerpc/64s: Implement system reset idle wakeup reason
2017-10-04 11:26:32 +11:00
isa-bridge.c
powerpc: Convert to using %pOF instead of full_name
2017-08-23 22:27:04 +10:00
jump_label.c
jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}
2015-08-03 11:34:12 +02:00
kexec_elf_64.c
powerpc: ima: send the kexec buffer to the next kernel
2016-12-20 09:48:44 -08:00
kgdb.c
powerpc/8xx: Getting rid of remaining use of CONFIG_8xx
2017-08-10 23:32:12 +10:00
kprobes-ftrace.c
powerpc/jprobes: Disable preemption when triggered through ftrace
2017-10-05 16:11:29 +11:00
kprobes.c
powerpc/jprobes: Validate break handler invocation as being due to a jprobe_return()
2017-10-05 16:12:48 +11:00
kvm_emul.S
…
kvm.c
powerpc/64: Fix watchdog configuration regressions
2017-08-31 14:26:00 +10:00
l2cr_6xx.S
powerpc/l2cr_6xx: Fix invalid use of register expressions
2017-08-15 21:04:32 +10:00
legacy_serial.c
powerpc: Convert to using %pOF instead of full_name
2017-08-23 22:27:04 +10:00
machine_kexec_32.c
…
machine_kexec_64.c
powerpc: Add purgatory for kexec_file_load() implementation.
2016-11-30 23:15:26 +11:00
machine_kexec_file_64.c
powerpc: ima: send the kexec buffer to the next kernel
2016-12-20 09:48:44 -08:00
machine_kexec.c
powerpc: Update of_remove_property() call sites to remove null checking
2016-05-11 21:54:04 +10:00
Makefile
powerpc/8xx: Getting rid of remaining use of CONFIG_8xx
2017-08-10 23:32:12 +10:00
mce_power.c
powerpc/mce: Hookup ierror (instruction) UE errors
2017-10-16 23:12:01 +11:00
mce.c
powerpc/mce: hookup memory_failure for UE errors
2017-10-16 23:12:02 +11:00
misc_32.S
powerpc/40x: Clear MSR_DR in one insn instead of two
2017-06-02 19:20:43 +10:00
misc_64.S
powerpc/kexec: Fix radix to hash kexec due to IAMR/AMOR
2017-07-10 21:07:38 +10:00
misc.S
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
module_32.c
powerpc/module: Only try to generate the ftrace_caller() stub once
2016-03-07 14:53:53 +11:00
module_64.c
powerpc/modules: Use WARN_ON() in stub_for_addr()
2017-10-13 19:41:57 +11:00
module.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
msi.c
powerpc: Remove MSI-related PCI controller ops from ppc_md
2015-06-02 11:47:45 +10:00
nvram_64.c
powerpc/nvram: use memdup_user
2017-06-27 17:02:50 -07:00
of_platform.c
powerpc: Convert to using %pOF instead of full_name
2017-08-23 22:27:04 +10:00
optprobes_head.S
powerpc/kprobes: Don't save/restore DAR/DSISR to/from pt_regs for optprobes
2017-08-24 16:19:01 +10:00
optprobes.c
powerpc/kprobes: Update optprobes to use emulate_update_regs()
2017-09-20 20:21:24 +10:00
paca.c
treewide: make "nr_cpu_ids" unsigned
2017-09-08 18:26:48 -07:00
pci_32.c
powerpc: Convert to using %pOF instead of full_name
2017-08-23 22:27:04 +10:00
pci_64.c
powerpc: Convert to using %pOF instead of full_name
2017-08-23 22:27:04 +10:00
pci_dn.c
powerpc/pci: Remove OF node back pointer from pci_dn
2017-08-31 14:26:12 +10:00
pci_of_scan.c
powerpc: Convert to using %pOF instead of full_name
2017-08-23 22:27:04 +10:00
pci-common.c
powerpc: Convert to using %pOF instead of full_name
2017-08-23 22:27:04 +10:00
pci-hotplug.c
powerpc/pci: Don't scan empty slot
2016-05-11 21:54:26 +10:00
pmc.c
…
ppc32.h
…
ppc_save_regs.S
…
proc_powerpc.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
process.c
powerpc/tm: P9 disable transactionally suspended sigcontexts
2017-10-21 09:36:28 +11:00
prom_init_check.sh
…
prom_init.c
powerpc/xive: add XIVE Exploitation Mode to CAS
2017-09-02 21:02:38 +10:00
prom_parse.c
…
prom.c
powerpc/powernv: Enable TM without suspend if possible
2017-10-21 09:33:05 +11:00
ptrace32.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
ptrace.c
powerpc/tm: Flush TM only if CPU has TM feature
2017-09-20 13:30:09 +10:00
reloc_32.S
…
reloc_64.S
powerpc/asm: Convert .llong directives to .8byte
2017-08-31 14:26:47 +10:00
rtas_flash.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
rtas_pci.c
powerpc/kernel: Change retrieval of pci_dn
2017-08-31 14:26:40 +10:00
rtas-proc.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
rtas-rtc.c
…
rtas.c
mm: treewide: remove GFP_TEMPORARY allocation flag
2017-09-13 18:53:16 -07:00
rtasd.c
powerpc: Only obtain cpu_hotplug_lock if called by rtasd
2017-06-23 09:32:11 +02:00
setup_32.c
powerpc/32: remove a NOP from memset()
2017-09-01 16:42:46 +10:00
setup_64.c
powerpc/64: Fix watchdog configuration regressions
2017-08-31 14:26:00 +10:00
setup-common.c
treewide: make "nr_cpu_ids" unsigned
2017-09-08 18:26:48 -07:00
setup.h
powerpc: Merge 32-bit and 64-bit setup_arch()
2016-07-21 19:17:46 +10:00
signal_32.c
powerpc/tm: P9 disable transactionally suspended sigcontexts
2017-10-21 09:36:28 +11:00
signal_64.c
powerpc/tm: P9 disable transactionally suspended sigcontexts
2017-10-21 09:36:28 +11:00
signal.c
livepatch/powerpc: add TIF_PATCH_PENDING thread flag
2017-03-08 09:20:19 +01:00
signal.h
powerpc: tm: Rename transct_(*) to ck(\1)_state
2016-10-04 20:33:16 +11:00
smp-tbsync.c
…
smp.c
powerpc/smp: Add Power9 scheduler topology
2017-08-31 18:16:08 +10:00
stacktrace.c
powerpc: Make /proc/self/stack always print the current stack
2017-03-28 14:43:59 +11:00
suspend.c
…
swsusp_32.S
…
swsusp_64.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/nmi.h>
2017-03-02 08:42:30 +01:00
swsusp_asm64.S
powerpc: Fix invalid use of register expressions
2017-08-10 22:29:41 +10:00
swsusp_booke.S
…
swsusp.c
powerpc/swsusp: Include suspend.h to silence sparse warnings
2017-03-20 19:02:49 +11:00
sys_ppc32.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
syscalls.c
powerpc/tracing: Allow tracing of mmap syscalls
2017-04-12 22:32:43 +10:00
sysfs.c
powerpc/sysfs: Move #ifdef CONFIG_HOTPLUG_CPU out of the function body
2017-05-03 14:45:38 +10:00
systbl_chk.c
powerpc: Standardise on NR_syscalls rather than __NR_syscalls.
2015-11-26 22:11:17 +11:00
systbl_chk.sh
powerpc: Standardise on NR_syscalls rather than __NR_syscalls.
2015-11-26 22:11:17 +11:00
systbl.S
powerpc/asm: Convert .llong directives to .8byte
2017-08-31 14:26:47 +10:00
tau_6xx.c
powerpc/6xx: Use setup_timer() helper
2017-10-04 11:28:02 +11:00
time.c
powerpc: use spin loop primitives in some functions
2017-07-02 20:40:24 +10:00
tm.S
powerpc/tm: Fix comment
2017-06-27 12:09:09 +10:00
traps.c
powerpc/64s: Add workaround for P9 vector CI load issue
2017-09-27 08:23:22 +10:00
udbg_16550.c
powerpc: Fix bad NULL pointer check in udbg_uart_getc_poll()
2014-11-12 13:47:20 +11:00
udbg.c
powerpc: Remove the celleb support
2015-04-07 17:15:13 +10:00
uprobes.c
powerpc/uprobes: Implement arch_uretprobe_is_alive()
2017-08-24 16:19:21 +10:00
vdso.c
powerpc/64: Clean up ppc64_caches using a struct per cache
2017-02-06 19:46:04 +11:00
vecemu.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
vector.S
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
vmlinux.lds.S
powerpc/mm: Implement STRICT_KERNEL_RWX on PPC32
2017-08-15 22:55:57 +10:00
watchdog.c
powerpc/watchdog: Do not trigger SMP crash from touch_nmi_watchdog
2017-10-04 11:26:02 +11:00