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linux/arch/powerpc/include/asm
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Nicholas Piggin fb479e44a9 powerpc/64s: relocation, register save fixes for system reset interrupt 
This patch does a couple of things. First of all, powernv immediately
explodes when running a relocated kernel, because the system reset
exception for handling sleeps does not do correct relocated branches.

Secondly, the sleep handling code trashes the condition and cfar
registers, which we would like to preserve for debugging purposes (for
non-sleep case exception).

This patch changes the exception to use the standard format that saves
registers before any tests or branches are made. It adds the test for
idle-wakeup as an "extra" to break out of the normal exception path.
Then it branches to a relocated idle handler that calls the various
idle handling functions.

After this patch, POWER8 CPU simulator now boots powernv kernel that is
running at non-zero.

Fixes: 948cf67c47 ("powerpc: Add NAP mode support on Power7 in HV mode")
Cc: stable@vger.kernel.org # v3.0+
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-10-27 21:55:14 +11:00
..
book3s powerpc updates for 4.9 2016-10-07 20:19:31 -07:00
nohash powerpc/mm/radix: Use different pte update sequence for different POWER9 revs 2016-09-13 17:37:10 +10:00
8xx_immap.h
accounting.h powerpc32: provide VIRT_CPU_ACCOUNTING 2016-07-09 01:43:50 -05:00
agp.h
archrandom.h powerpc: Use hardware RNG for arch_get_random_seed_* not arch_get_random_* 2015-07-23 19:52:03 +10:00
asm-compat.h powerpc/ebpf/jit: Implement JIT compiler for extended BPF 2016-06-24 15:17:57 +10:00
asm-offsets.h
asm-prototypes.h powerpc: Use kprobe blacklist for exception handlers 2016-09-19 10:53:54 +10:00
async_tx.h
atomic.h powerpc: Remove static branch prediction in atomic{, 64}_add_unless 2016-10-04 16:13:13 +11:00
backlight.h
barrier.h powerpc: define __smp_xxx 2016-01-12 20:46:53 +02:00
bitops.h powerpc: Fix comment typos in arch/powerpc/include/asm/bitops.h 2014-11-12 16:31:46 +11:00
bootx.h
btext.h
bug.h powerpc: Remove stale function prototypes 2014-09-25 23:14:43 +10:00
bugs.h
cache.h powerpc: add inline functions for cache related instructions 2016-03-11 17:20:11 -06:00
cacheflush.h powerpc: Move cpu_has_feature() to a separate file 2016-08-01 11:15:03 +10:00
cell-pmu.h
cell-regs.h
checksum.h powerpc: optimise csum_partial() call when len is constant 2016-03-09 10:44:18 -06:00
cmpxchg.h powerpc: Use BUILD_BUG_ON_MSG() for unsupported {cmp}xchg sizes 2016-02-24 20:08:48 +11:00
code-patching.h powerpc: Define and use PPC64_ELF_ABI_v2/v1 2016-06-14 13:58:27 +10:00
compat.h powerpc/kernel: Add SIG_SYS support for compat tasks 2015-07-29 11:56:13 +10:00
context_tracking.h powerpc: No need to use dot symbols when branching to a function 2014-04-23 10:05:16 +10:00
copro.h powerpc/cell: Make spu_flush_all_slbs() generic 2014-10-08 20:15:37 +11:00
cpm.h QE: Move QE from arch/powerpc to drivers/soc 2015-12-22 17:12:56 -06:00
cpm1.h
cpm2.h powerpc/cpm: Remove duplicate FCC_GFMR_TTX define 2014-06-11 17:03:28 +10:00
cpu_has_feature.h powerpc/kernel: Fix size of NUM_CPU_FTR_KEYS on 32-bit 2016-09-12 12:48:28 +10:00
cpufeature.h powerpc: Add module autoloading based on CPU features 2016-07-21 20:33:57 +10:00
cpuidle.h powerpc: Convert cmp to cmpd in idle enter sequence 2016-10-22 08:44:38 +11:00
cputable.h powerpc/8xx: add dedicated machine check handler 2016-09-25 02:38:55 -05:00
cputhreads.h powerpc: cputhreads: Add missing include file 2016-08-22 11:09:33 +10:00
cputime.h powerpc: Move cpu_has_feature() to a separate file 2016-08-01 11:15:03 +10:00
current.h
dbdma.h powerpc: Move Power Macintosh drivers to generic byteswappers 2015-03-23 14:29:40 +11:00
dbell.h powerpc: Move cpu_has_feature() to a separate file 2016-08-01 11:15:03 +10:00
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 powerpc: Move cpu_has_feature() to a separate file 2016-08-01 11:15:03 +10:00
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/iommu: Remove dma_data union 2015-07-13 10:10:54 +10:00
disassemble.h KVM: PPC: e500: Emulate TMCFG0 TMRN register 2015-10-15 15:58:16 +11:00
dma-mapping.h dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
dma.h
edac.h EDAC: Cleanup atomic_scrub mess 2015-05-28 15:31:53 +02:00
eeh.h powerpc/pci: Delay populating pdn 2016-06-21 15:30:56 +10:00
eeh_event.h powerpc/powernv: Fix killed EEH event 2014-06-11 17:04:33 +10:00
ehv_pic.h
elf.h mm: fold arch_randomize_brk into ARCH_HAS_ELF_RANDOMIZE 2015-04-14 16:49:05 -07:00
emergency-restart.h
emulated_ops.h powerpc: Add lq/stq emulation 2014-04-09 12:53:28 +10:00
epapr_hcalls.h
exception-64e.h powerpc/e6500: hw tablewalk: make sure we invalidate and write to the same tlb entry 2015-10-27 18:14:40 -05:00
exception-64s.h powerpc/64s: relocation, register save fixes for system reset interrupt 2016-10-27 21:55:14 +11:00
exec.h
fadump.h powerpc/fadump: Set core e_flags using kernel's ELF ABI version 2016-09-13 17:36:01 +10:00
fb.h
feature-fixups.h powerpc/32: Fix crash during static key init 2016-08-10 19:41:58 +10:00
firmware.h powerpc: Move FW feature probing out of pseries probe() 2016-07-21 18:56:13 +10:00
fixmap.h powerpc/8xx: Fix vaddr for IMMR early remap 2016-07-09 02:02:48 -05:00
floppy.h powerpc/irq: Remove IRQF_DISABLED 2011-11-08 14:51:46 +11:00
fs_pd.h powerpc/8xx: Remove empty asm/mpc8xx.h 2014-06-25 18:49:40 -05:00
fsl_85xx_cache_sram.h
fsl_gtm.h
fsl_hcalls.h
fsl_lbc.h uio: uio_fsl_elbc_gpcm: new driver 2015-01-12 05:04:13 -08:00
fsl_pamu_stash.h iommu/fsl: Various cleanups 2015-02-03 18:47:18 +01:00
fsl_pm.h powerpc/rcpm: add RCPM driver 2016-03-04 23:50:27 -06:00
ftrace.h powerpc: Define and use PPC64_ELF_ABI_v2/v1 2016-06-14 13:58:27 +10:00
futex.h
grackle.h powerpc: Move include files to arch/powerpc/include/asm 2008-08-04 12:02:00 +10:00
hardirq.h powerpc: Replace __get_cpu_var uses 2014-11-03 12:12:32 +11:00
head-64.h powerpc: Use gas sections for arranging exception vectors 2016-10-04 13:06:56 +11:00
heathrow.h
highmem.h kmap_atomic_to_page() has no users, remove it 2015-11-09 15:11:24 -08:00
hmi.h powerpc: move hmi.c to arch/powerpc/kvm/ 2016-09-09 16:18:07 +10:00
hugetlb.h powerpc/mm: Use hugetlb flush functions 2016-08-01 11:15:09 +10:00
hvcall.h powerpc: Put exception configuration in a common place 2016-07-21 18:56:31 +10:00
hvconsole.h
hvcserver.h
hvsi.h
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/8xx: use SPRN_EIE and SPRN_EID to enable/disable interrupts 2016-09-25 02:38:53 -05:00
hydra.h powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
i8259.h
ibmebus.h
icswx.h crypto: nx-842 - Mask XERS0 bit in return value 2015-12-17 16:42:12 +08:00
ide.h
immap_cpm2.h
io-defs.h
io-workarounds.h
io.h powerpc: Add simple cache inhibited MMIO accessors 2016-09-09 16:17:59 +10:00
io_event_irq.h
iommu.h dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
ipic.h
irq.h powerpc: Remove stale function prototypes 2014-09-25 23:14:43 +10:00
irq_work.h powerpc: Re-enable dynticks 2015-02-23 14:52:04 +11:00
irqflags.h powerpc: Update comments in irqflags.h 2014-07-28 14:11:23 +10:00
jump_label.h powerpc updates for 4.8 #2 2016-08-05 09:00:54 -04:00
Kbuild ppc: move exports to definitions 2016-08-07 23:50:09 -04:00
kdebug.h
kdump.h
kexec.h powerpc/kdump: Ignore failure in enabling big endian exception during crash 2014-12-29 15:44:53 +11:00
keylargo.h
kgdb.h
kmap_types.h
kprobes.h powerpc: Define and use PPC64_ELF_ABI_v2/v1 2016-06-14 13:58:27 +10:00
kvm_asm.h KVM: PPC: Book3S HV: Complete passthrough interrupt in host 2016-09-12 10:12:07 +10:00
kvm_book3s.h KVM: PPC: Book3S: Treat VTB as a per-subcore register, not per-thread 2016-09-27 14:41:39 +10:00
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: Remove duplicate setting of the B field in tlbie 2016-09-27 15:14:29 +10:00
kvm_book3s_asm.h powerpc/powernv: Add platform support for stop instruction 2016-07-15 20:18:41 +10:00
kvm_booke.h KVM: PPC: Book3S: correct width in XER handling 2015-08-22 11:16:19 +02:00
kvm_booke_hv_asm.h
kvm_fpu.h
kvm_host.h KVM: PPC: Book3S: Treat VTB as a per-subcore register, not per-thread 2016-09-27 14:41:39 +10:00
kvm_para.h kvm/powerpc: move kvm_hypercall0() and friends to epapr_hypercall0() 2014-01-09 10:14:57 +01:00
kvm_ppc.h KVM: PPC: Book3S HV: Set server for passed-through interrupts 2016-09-12 10:12:28 +10:00
libata-portmap.h libata: remove unused definitions from <asm/libata-portmap.h> 2016-09-22 11:50:19 -04:00
linkage.h powerpc: Define and use PPC64_ELF_ABI_v2/v1 2016-06-14 13:58:27 +10:00
livepatch.h powerpc/livepatch: Add livepatch stack to struct thread_info 2016-04-14 15:47:06 +10:00
local.h
lppaca.h powerpc: Make slb_shadow a local 2013-12-09 11:40:25 +11:00
lv1call.h
machdep.h powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
macio.h
mc146818rtc.h
mce.h
mediabay.h
mm-arch-hooks.h powerpc/mm: tracking vDSO remap 2015-06-24 17:49:41 -07:00
mman.h powerpc updates for 4.8 #2 2016-08-05 09:00:54 -04:00
mmu-8xx.h powerpc/8xx: Fix vaddr for IMMR early remap 2016-07-09 02:02:48 -05:00
mmu-40x.h
mmu-44x.h
mmu-book3e.h powerpc/64/kexec: Fix MMU cleanup on radix 2016-09-23 07:54:17 +10:00
mmu.h powerpc updates for 4.9 2016-10-07 20:19:31 -07:00
mmu_context.h powerpc: During context switch, check before setting mm_cpumask 2016-10-04 16:12:16 +11:00
mmzone.h powerpc: implement arch_reserved_kernel_pages 2016-10-07 18:46:28 -07:00
module.h Merge branch 'topic/mprofile-kernel' into next 2016-03-11 11:20:15 +11:00
mpc5xxx.h
mpc6xx.h
mpc52xx.h powerpc: Make ppc_md.{halt, restart} __noreturn 2016-07-14 21:12:06 +10:00
mpc52xx_psc.h powerpc: mpc512x: drop bogus and unused psc register bit definitions 2015-10-22 16:06:08 +02:00
mpc85xx.h powerpc/fsl-booke: Add T4080 SVR value 2015-03-31 22:23:17 -05:00
mpc5121.h powerpc/512x: add LocalPlus Bus FIFO device driver 2015-10-22 15:19:40 +02:00
mpc8260.h
mpic.h powerpc/mpic: Add get_version API both for internal and external use 2015-03-23 19:51:17 -05:00
mpic_msgr.h powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
mpic_timer.h
msi_bitmap.h powerpc/msi: Free the bitmap if it was slab allocated 2015-10-05 21:32:50 +11:00
mutex.h locking/mutex: Optimize mutex_trylock() fast-path 2016-06-08 15:17:01 +02:00
nmi.h powerpc: Add ppc64 hard lockup detector support 2015-04-11 20:49:27 +10:00
nvram.h powerpc/nvram: Move generic code for nvram and pstore 2015-03-23 14:05:49 +11:00
ohare.h powerpc: Move include files to arch/powerpc/include/asm 2008-08-04 12:02:00 +10:00
opal-api.h powerpc/opal: Add real mode call wrappers 2016-07-17 16:42:46 +10:00
opal.h KVM: PPC: Book3S HV: Set server for passed-through interrupts 2016-09-12 10:12:28 +10:00
oprofile_impl.h powerpc: Remove oprofile RS64 support 2014-07-28 14:10:25 +10:00
paca.h powerpc: move hmi.c to arch/powerpc/kvm/ 2016-09-09 16:18:07 +10:00
page.h powerpc/32: Remove RELOCATABLE_PPC32 2016-07-19 20:17:07 +10:00
page_32.h powerpc32: Remove clear_pages() and define clear_page() inline 2016-03-11 17:20:11 -06:00
page_64.h powerpc/mm/slice: Remove slice_mm_new_context() 2016-05-11 21:54:00 +10:00
parport.h powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
pasemi_dma.h
pci-bridge.h powerpc/pseries: use pci_host_bridge.release_fn() to kfree(phb) 2016-08-22 11:09:33 +10:00
pci.h PCI: Unify pci_resource_to_user() declarations 2016-06-17 14:43:34 -05:00
percpu.h
perf_event.h powerpc: Rename __get_SP() to current_stack_pointer() 2014-10-15 11:23:20 +11:00
perf_event_fsl_emb.h
perf_event_server.h powerpc/perf: Export Power8 generic and cache events to sysfs 2016-03-10 22:56:05 +11:00
pgalloc.h powerpc/mm: Copy pgalloc (part 2) 2016-05-11 21:53:49 +10:00
pgtable-be-types.h powerpc/mm: use _raw variant of page table accessors 2016-07-17 16:42:51 +10:00
pgtable-types.h powerpc/mm: Add pte_xchg() helper 2016-05-01 18:32:16 +10:00
pgtable.h powerpc/mm: check for irq disabled() only if DEBUG_VM is enabled 2016-07-26 16:19:19 -07:00
plpar_wrappers.h powerpc/mm: Use H_READ with H_READ_4 2015-12-14 15:19:17 +11:00
pmac_feature.h powerpc: Various typo fixes 2016-06-14 13:58:26 +10:00
pmac_low_i2c.h
pmac_pfunc.h powerpc: Move include files to arch/powerpc/include/asm 2008-08-04 12:02:00 +10:00
pmc.h
pmi.h
pnv-pci.h powerpc updates for 4.9 2016-10-07 20:19:31 -07:00
ppc-opcode.h Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next 2016-10-11 20:07:56 +11:00
ppc-pci.h powerpc/pci: Delay populating pdn 2016-06-21 15:30:56 +10:00
ppc4xx.h powerpc: Make ppc_md.{halt, restart} __noreturn 2016-07-14 21:12:06 +10:00
ppc4xx_ocm.h
ppc_asm.h powerpc/32: Remove CLR_TOP32 2016-09-23 07:54:22 +10:00
probes.h
processor.h powerpc: tm: Enable transactional memory (TM) lazily for userspace 2016-10-04 20:33:17 +11:00
prom.h powerpc: Remove stale function prototypes 2014-09-25 23:14:43 +10:00
ps3.h powerpc/64: Move MMU backend selection out of platform code 2016-07-21 18:56:38 +10:00
ps3av.h powerpc: Various typo fixes 2016-06-14 13:58:26 +10:00
ps3gpu.h
ps3stor.h
pte-common.h powerpc: Various typo fixes 2016-06-14 13:58:26 +10:00
ptrace.h powerpc: Define and use PPC64_ELF_ABI_v2/v1 2016-06-14 13:58:27 +10:00
reg.h powerpc updates for 4.9 #2 2016-10-14 11:07:42 -07:00
reg_8xx.h powerpc/8xx: use SPRN_EIE and SPRN_EID to enable/disable interrupts 2016-09-25 02:38:53 -05:00
reg_a2.h powerpc: Remove platforms/wsp and associated pieces 2014-06-11 16:35:38 +10:00
reg_booke.h powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
reg_fsl_emb.h
rheap.h
rio.h powerpc: Remove stale function prototypes 2014-09-25 23:14:43 +10:00
rtas.h powerpc: Merge 32-bit and 64-bit setup_arch() 2016-07-21 19:17:46 +10:00
runlatch.h
scom.h
seccomp.h powerpc: switch to using asm-generic for seccomp.h 2015-04-17 09:04:10 -04:00
sections.h powerpc: Define and use PPC64_ELF_ABI_v2/v1 2016-06-14 13:58:27 +10:00
serial.h
setjmp.h
setup.h powerpc: Put exception configuration in a common place 2016-07-21 18:56:31 +10:00
sfp-machine.h
shmparam.h powerpc: Move include files to arch/powerpc/include/asm 2008-08-04 12:02:00 +10:00
signal.h powerpc: signals: Stop using current in signal code 2016-10-04 16:43:07 +11:00
smp.h powerpc: Merge 32-bit and 64-bit setup_arch() 2016-07-21 19:17:46 +10:00
smu.h powerpc/pmac: Remove early allocation of the SMU command buffer 2016-07-21 18:56:38 +10:00
sparsemem.h
spinlock.h powerpc/spinlock: Fix spin_unlock_wait() 2016-06-14 16:05:44 +10:00
spinlock_types.h
spu.h powerpc/cell: Move spu_handle_mm_fault() out of cell platform 2014-10-08 20:14:54 +11:00
spu_csa.h powerpc/cell: Drop support for 64K local store on 4K kernels 2015-08-18 19:29:49 +10:00
spu_info.h
spu_priv1.h
sstep.h powerpc: Emulate icbi, mcrf and conditional-trap instructions 2014-09-25 23:14:51 +10:00
string.h powerpc: Remove assembly versions of strcpy, strcat, strlen and strcmp 2016-06-14 13:58:25 +10:00
swab.h powerpc: Remove unused st_le*() and ld_le* functions 2015-03-24 13:33:52 +11:00
swiotlb.h
switch_to.h powerpc/ptrace: Fix coredump since ptrace TM changes 2016-08-10 16:34:20 +10:00
synch.h powerpc: Factor do_feature_fixup calls 2016-07-21 18:51:42 +10:00
syscall.h powerpc: Change syscall_get_nr() to return int 2015-07-29 11:56:13 +10:00
syscalls.h
systbl.h powerpc: wire up preadv2 and pwritev2 syscalls 2016-04-27 16:47:55 +10:00
tce.h powerpc/powernv/pci: Remove SWINV constants and obsolete TCE code 2016-07-17 16:42:47 +10:00
termios.h UAPI: (Scripted) Disintegrate arch/powerpc/include/asm 2012-10-09 09:47:26 +01:00
thread_info.h signal: consolidate {TS,TLF}_RESTORE_SIGMASK code 2016-08-02 19:35:23 -04:00
time.h powerpc: Move cpu_has_feature() to a separate file 2016-08-01 11:15:03 +10:00
timex.h
tlb.h powerpc/mm/radix: Use tlbiel only if we ever ran on the current cpu 2016-10-27 21:55:13 +11:00
tlbflush.h powerpc/mm: remove flush_tlb_page_nohash 2016-08-01 11:15:13 +10:00
tm.h powerpc: Remove do_load_up_transact_{fpu,altivec} 2016-10-04 20:33:16 +11:00
topology.h sched/topology: Rename topology_thread_cpumask() to topology_sibling_cpumask() 2015-05-27 15:22:15 +02:00
trace.h powerpc/pseries: Don't trace hcalls on offline CPUs 2016-02-15 21:10:03 +11:00
trace_clock.h powerpc/ftrace: add powerpc timebase as a trace clock source 2015-08-06 16:36:23 +10:00
tsi108.h powerpc: Various typo fixes 2016-06-14 13:58:26 +10:00
tsi108_irq.h
tsi108_pci.h genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
types.h powerpc: Define and use PPC64_ELF_ABI_v2/v1 2016-06-14 13:58:27 +10:00
uaccess.h Merge branch 'uaccess-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-09-14 09:35:05 -07:00
udbg.h powerpc: Remove stale function prototypes 2014-09-25 23:14:43 +10:00
uic.h
unaligned.h
uninorth.h powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
unistd.h powerpc: Ignore the pkey system calls for now 2016-10-19 20:36:24 +11:00
uprobes.h
user.h
vdso.h powerpc: Link VDSOs at 0x0 2014-02-17 11:19:37 +11:00
vdso_datapage.h powerpc: Standardise on NR_syscalls rather than __NR_syscalls. 2015-11-26 22:11:17 +11:00
vga.h powerpc: Move Power Macintosh drivers to generic byteswappers 2015-03-23 14:29:40 +11:00
vio.h remove <asm/scatterlist.h> 2015-05-05 13:35:39 -06:00
word-at-a-time.h powerpc: Fix bad inline asm constraint in create_zero_mask() 2016-05-02 11:10:25 +10:00
xics.h powerpc/xics: Properly set Edge/Level type and enable resend 2016-08-09 14:50:18 +10:00
xilinx_intc.h
xilinx_pci.h
xmon.h
xor.h powerpc: Move cpu_has_feature() to a separate file 2016-08-01 11:15:03 +10:00