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kernel-ark/arch/powerpc/kernel
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Michael Neuling 6ce6c629fd powerpc/tm: Abort on emulation and alignment faults 
If we are emulating an instruction inside an active user transaction that
touches memory, the kernel can't emulate it as it operates in transactional
suspend context.  We need to abort these transactions and send them back to
userspace for the hardware to rollback.

We can service these if the user transaction is in suspend mode, since the
kernel will operate in the same suspend context.

This adds a check to all alignment faults and to specific instruction
emulations (only string instructions for now).  If the user process is in an
active (non-suspended) transaction, we abort the transaction go back to
userspace allowing the HW to roll back the transaction and tell the user of the
failure.  This also adds new tm abort cause codes to report the reason of the
persistent error to the user.

Crappy test case here http://neuling.org/devel/junkcode/aligntm.c

Signed-off-by: Michael Neuling <mikey@neuling.org>
Cc: <stable@vger.kernel.org> # v3.9
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-06-01 08:29:22 +10:00
..
vdso32 powerpc: Add VDSO version of time 2013-04-23 16:05:05 +10:00
vdso64 powerpc: Add VDSO version of time 2013-04-23 16:05:05 +10:00
.gitignore
align.c
asm-offsets.c powerpc: Context switch more PMU related SPRs 2013-05-24 18:13:45 +10:00
audit.c
btext.c
cacheinfo.c
cacheinfo.h
clock.c
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 AltiVec support for e6500 2013-03-12 15:59:26 -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
cputable.c powerpc/cputable: Advertise support for ISEL/HTM/DSCR/TAR on POWER8 2013-05-06 09:25:40 +10:00
crash_dump.c mm/ppc: use common help functions to free reserved pages 2013-04-29 15:54:30 -07:00
crash.c
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
entry_32.S powerpc: Fix MAX_STACK_TRACE_ENTRIES too low warning again 2013-05-14 14:36:35 +10:00
entry_64.S powerpc: Context switch more PMU related SPRs 2013-05-24 18:13:45 +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: define the conditions where the ePAPR idle hcall can be supported 2013-03-26 08:47:27 +11:00
exceptions-64e.S powerpc/booke64: Fix kernel hangs at kernel_dbg_exc 2013-05-14 16:00:19 +10:00
exceptions-64s.S powerpc: Save DAR and DSISR in pt_regs on MCE 2013-04-30 15:59:42 +10:00
fadump.c mm/ppc: use common help functions to free reserved pages 2013-04-29 15:54:30 -07:00
firmware.c
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
head_32.S
head_40x.S powerpc: Enable the Watchdog vector for 405 2013-01-10 14:43:46 +11:00
head_44x.S powerpc: Fix interrupt range check on debug exception 2013-05-02 10:31:01 +10:00
head_64.S powerpc: Add isync to copy_and_flush 2013-04-26 16:08:17 +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: Fix interrupt range check on debug exception 2013-05-02 10:31:01 +10:00
hw_breakpoint.c powerpc: Change hardware breakpoint to allow longer ranges 2013-01-29 11:35:08 +11:00
ibmebus.c powerpc: Remove all includes of <asm/abs_addr.h> 2012-09-05 15:19:33 +10:00
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: Use generic idle loop 2013-04-08 17:39:27 +02:00
io-workarounds.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
io.c
iomap.c
iommu.c powerpc: Use PTR_RET instead of IS_ERR/PTR_ERR 2013-04-18 13:03:48 +10:00
irq.c powerpc: Add accounting for Doorbell interrupts 2013-04-18 15:59:55 +10:00
isa-bridge.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
jump_label.c
kgdb.c powerpc/kgdb: Removed kmalloc returned value cast 2013-04-18 13:03:56 +10:00
kprobes.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
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/ppc: use common help functions to free reserved pages 2013-04-29 15:54:30 -07:00
l2cr_6xx.S
legacy_serial.c Fix misspellings of "whether" in comments. 2012-11-19 14:31:35 +01:00
lparcfg.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-05-02 10:16:16 -07:00
machine_kexec_32.c
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: Add helper functions for transactional memory context switching 2013-02-15 16:58:52 +11:00
misc_32.S powerpc: Provide __bswapdi2 2013-05-14 16:00:17 +10:00
misc_64.S powerpc: Provide __bswapdi2 2013-05-14 16:00:17 +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
msi.c
nvram_64.c powerpc: remove cast for kmalloc/kzalloc return value 2013-04-18 13:03:56 +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: Move boot_paca into early_setup 2013-02-15 16:54:48 +11:00
pci_32.c powerpc/pci: Support per-aperture memory offset 2013-05-06 13:40:40 +10:00
pci_64.c powerpc: Make radeon 32-bit MSI quirk work on powernv 2013-05-24 18:13:45 +10:00
pci_dn.c powerpc: Make radeon 32-bit MSI quirk work on powernv 2013-05-24 18:13:45 +10:00
pci_of_scan.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
pci-common.c powerpc/pci: Fix bogus message at boot about empty memory resources 2013-05-24 18:13:44 +10:00
pmc.c
ppc32.h powerpc: switch to generic old sigaction() 2013-02-03 18:16:10 -05:00
ppc_ksyms.c powerpc: Provide __bswapdi2 2013-05-14 16:00:17 +10:00
ppc_save_regs.S
proc_powerpc.c proc: Supply PDE attribute setting accessor functions 2013-05-01 17:29:18 -04:00
process.c powerpc/booke64: Fix kernel hangs at kernel_dbg_exc 2013-05-14 16:00:19 +10:00
prom_init_check.sh powerpc: Relocate prom_init.c on 64bit 2013-01-10 17:00:25 +11:00
prom_init.c powerpc/pseries: Enable PRRN handling 2013-04-26 16:08:26 +10:00
prom_parse.c
prom.c Merge branch 'dt' into next 2012-11-15 15:02:44 +11:00
ptrace32.c powerpc: fixing ptrace_get_reg to return an error 2013-04-18 13:03:57 +10:00
ptrace.c powerpc: Syscall hooks for context tracking subsystem 2013-05-14 16:00:19 +10:00
reloc_32.S
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
rtas.c powerpc: Bring all threads online prior to migration/hibernation 2013-05-14 14:36:29 +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/watchdog: move booke watchdog param related code to setup-common.c 2012-07-11 07:44:03 -05:00
setup_64.c powerpc: Reduce PTE table memory wastage 2013-04-30 16:00:07 +10:00
setup-common.c powerpc: remove PReP platform 2013-04-18 13:03:53 +10:00
setup.h
signal_32.c powerpc: fix compiling CONFIG_PPC_TRANSACTIONAL_MEM when CONFIG_ALTIVEC=n 2013-04-10 08:14:39 +10:00
signal_64.c powerpc: fix compiling CONFIG_PPC_TRANSACTIONAL_MEM when CONFIG_ALTIVEC=n 2013-04-10 08:14:39 +10:00
signal.c powerpc: Set show_unhandled_signals to 1 by default 2013-05-14 18:01:04 +10:00
signal.h powerpc: Add new transactional memory state to the signal context 2013-02-15 17:02:23 +11:00
smp-tbsync.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
smp.c powerpc: Use generic idle loop 2013-04-08 17:39:27 +02:00
softemu8xx.c
stacktrace.c
suspend.c
swsusp_32.S
swsusp_64.c
swsusp_asm64.S
swsusp_booke.S
swsusp.c
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/topology: Fix spurr attribute permission 2013-05-06 15:02:40 +10:00
systbl_chk.c
systbl_chk.sh
systbl.S
tau_6xx.c
time.c powerpc: Use PTR_RET instead of IS_ERR/PTR_ERR 2013-04-18 13:03:48 +10:00
tm.S powerpc: fix compiling CONFIG_PPC_TRANSACTIONAL_MEM when CONFIG_ALTIVEC=n 2013-04-10 08:14:39 +10:00
traps.c powerpc/tm: Abort on emulation and alignment faults 2013-06-01 08:29:22 +10:00
udbg_16550.c
udbg.c powerpc: Add an in memory udbg console 2013-05-08 06:36:49 +10:00
uprobes.c uretprobes/powerpc: Hijack return address 2013-04-13 15:31:56 +02:00
vdso.c powerpc: Add VDSO version of time 2013-04-23 16:05:05 +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: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
vmlinux.lds.S powerpc: Relocate prom_init.c on 64bit 2013-01-10 17:00:25 +11:00