Nicholas Piggin e36d0a2ed5 powerpc/powernv: Implement NMI IPI with OPAL_SIGNAL_SYSTEM_RESET ... This allows MSR[EE]=0 lockups to be detected on an OPAL (bare metal) system similarly to the hcall NMI IPI on pseries guests, when the platform/firmware supports it. This is an example of CPU10 spinning with interrupts hard disabled: Watchdog CPU:32 detected Hard LOCKUP other CPUS:10 Watchdog CPU:10 Hard LOCKUP CPU: 10 PID: 4410 Comm: bash Not tainted 4.13.0-rc7-00074-ge89ce1f89f62-dirty #34 task: c0000003a82b4400 task.stack: c0000003af55c000 NIP: c0000000000a7b38 LR: c000000000659044 CTR: c0000000000a7b00 REGS: c00000000fd23d80 TRAP: 0100 Not tainted (4.13.0-rc7-00074-ge89ce1f89f62-dirty) MSR: 90000000000c1033 <SF,HV,ME,IR,DR,RI,LE> CR: 28422222 XER: 20000000 CFAR: c0000000000a7b38 SOFTE: 0 GPR00: c000000000659044 c0000003af55fbb0 c000000001072a00 0000000000000078 GPR04: c0000003c81b5c80 c0000003c81cc7e8 9000000000009033 0000000000000000 GPR08: 0000000000000000 c0000000000a7b00 0000000000000001 9000000000001003 GPR12: c0000000000a7b00 c00000000fd83200 0000000010180df8 0000000010189e60 GPR16: 0000000010189ed8 0000000010151270 000000001018bd88 000000001018de78 GPR20: 00000000370a0668 0000000000000001 00000000101645e0 0000000010163c10 GPR24: 00007fffd14d6294 00007fffd14d6290 c000000000fba6f0 0000000000000004 GPR28: c000000000f351d8 0000000000000078 c000000000f4095c 0000000000000000 NIP [c0000000000a7b38] sysrq_handle_xmon+0x38/0x40 LR [c000000000659044] __handle_sysrq+0xe4/0x270 Call Trace: [c0000003af55fbd0] [c000000000659044] __handle_sysrq+0xe4/0x270 [c0000003af55fc70] [c000000000659810] write_sysrq_trigger+0x70/0xa0 [c0000003af55fca0] [c0000000003da650] proc_reg_write+0xb0/0x110 [c0000003af55fcf0] [c0000000003423bc] __vfs_write+0x6c/0x1b0 [c0000003af55fd90] [c000000000344398] vfs_write+0xd8/0x240 [c0000003af55fde0] [c00000000034632c] SyS_write+0x6c/0x110 [c0000003af55fe30] [c00000000000b220] system_call+0x58/0x6c Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Use kernel types for opal_signal_system_reset()] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2017-10-04 11:27:27 +11:00
..
boot	powerpc: conditionally compile platform-specific serial drivers	2017-08-31 14:26:48 +10:00
configs	powerpc/configs: Update for CONFIG_SND changes	2017-09-20 13:30:09 +10:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2017-05-02 15:53:46 -07:00
include	powerpc/powernv: Implement NMI IPI with OPAL_SIGNAL_SYSTEM_RESET	2017-10-04 11:27:27 +11:00
kernel	powerpc/64s: Implement system reset idle wakeup reason	2017-10-04 11:26:32 +11:00
kvm	kvm,powerpc: Serialize wq active checks in ops->vcpu_kick	2017-09-15 16:57:13 +02:00
lib	powerpc/sstep: mullw should calculate a 64 bit signed result	2017-09-20 13:30:09 +10:00
math-emu
mm	cxl: Enable global TLBIs for cxl contexts	2017-09-28 17:09:16 +10:00
net	powerpc updates for 4.14	2017-09-07 10:15:40 -07:00
oprofile
perf	powerpc/sysrq: Fix oops whem ppmu is not registered	2017-09-20 13:30:09 +10:00
platforms	powerpc/powernv: Implement NMI IPI with OPAL_SIGNAL_SYSTEM_RESET	2017-10-04 11:27:27 +11:00
purgatory	powerpc/asm: Convert .llong directives to .8byte	2017-08-31 14:26:47 +10:00
sysdev	treewide: make "nr_cpu_ids" unsigned	2017-09-08 18:26:48 -07:00
tools	powerpc/64: Tool to check head sections location sanity	2017-05-30 14:59:51 +10:00
xmon	powerpc/xmon: Avoid tripping SMP hardlockup watchdog	2017-10-04 11:26:23 +11:00
Kconfig	powerpc updates for 4.14	2017-09-07 10:15:40 -07:00
Kconfig.debug	powerpc/xmon: Enable disassembly files (compilation changes)	2017-02-15 20:02:42 +11:00
Makefile	Merge branch 'fixes' into next	2017-08-23 22:20:10 +10:00
Makefile.postlink	powerpc/64: Tool to check head sections location sanity	2017-05-30 14:59:51 +10:00