Nicholas Piggin 6cc3f91bf6 powerpc/64s: Fix may_hard_irq_enable() for PMI soft masking ... The soft IRQ masking code has to hard-disable interrupts in cases where the exception is not cleared by the masked handler. External interrupts used this approach for soft masking. Now recently PMU interrupts do the same thing. The soft IRQ masking code additionally allowed for interrupt handlers to hard-enable interrupts after soft-disabling them. The idea is to allow PMU interrupts through to profile interrupt handlers. So when interrupts are being replayed when there is a pending interrupt that requires hard-disabling, there is a test to prevent those handlers from hard-enabling them if there is a pending external interrupt. may_hard_irq_enable() handles this. After f442d00480 ("powerpc/64s: Add support to mask perf interrupts and replay them"), may_hard_irq_enable() could prematurely enable MSR[EE] when a PMU exception exists, which would result in the interrupt firing again while masked, and MSR[EE] being disabled again. I haven't seen that this could cause a serious problem, but it's more consistent to handle these soft-masked interrupts in the same way. So introduce a define for all types of interrupts that require MSR[EE] masking in their soft-disable handlers, and use that in may_hard_irq_enable(). Fixes: f442d00480 ("powerpc/64s: Add support to mask perf interrupts and replay them") Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2018-02-08 23:56:10 +11:00
..
boot	powerpc updates for 4.16	2018-02-02 10:01:04 -08:00
configs	powerpc updates for 4.16	2018-02-02 10:01:04 -08:00
crypto	crypto: hash - annotate algorithms taking optional key	2018-01-12 23:03:35 +11:00
include	powerpc/64s: Fix may_hard_irq_enable() for PMI soft masking	2018-02-08 23:56:10 +11:00
kernel	powerpc/64s: Fix may_hard_irq_enable() for PMI soft masking	2018-02-08 23:56:10 +11:00
kvm	powerpc updates for 4.16	2018-02-02 10:01:04 -08:00
lib	Merge branch 'fixes' into next	2018-01-21 23:21:14 +11:00
math-emu	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mm	powerpc/numa: Invalidate numa_cpu_lookup_table on cpu remove	2018-02-08 23:56:10 +11:00
net	bpf, ppc64: remove obsolete exception handling from div/mod	2018-01-26 16:42:06 -08:00
oprofile	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
perf	Merge branch 'fixes' into next	2018-01-21 23:21:14 +11:00
platforms	powerpc/numa: Invalidate numa_cpu_lookup_table on cpu remove	2018-02-08 23:56:10 +11:00
purgatory	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
sysdev	pci-v4.16-changes	2018-02-06 09:59:40 -08:00
tools	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
xmon	powerpc/64s: Improve RFI L1-D cache flush fallback	2018-01-23 16:16:33 +11:00
Kconfig	Merge branch 'linus' into sched/urgent, to resolve conflicts	2018-02-06 21:12:31 +01:00
Kconfig.debug	powerpc: Add new kconfig CONFIG_PPC_IRQ_SOFT_MASK_DEBUG	2018-01-19 22:37:03 +11:00
Makefile	powerpc/modules: Fix alignment of .toc section in kernel modules	2017-12-11 13:03:35 +11:00
Makefile.postlink	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00