[0/9] x86: IRQ management adjustments

Message

Jan Beulich April 29, 2019, 11:16 a.m. UTC

First and foremost this series is trying to deal with CPU offlining
issues, which have become more prominent with the recently
added SMT enable/disable operation in xen-hptool. Later patches
in the series then carry out more or less unrelated changes
(hopefully improvements) noticed while looking at various pieces
of involved code.

The first patch introduces an ASSERT() which I've observed to
trigger every once in a while. I'm still trying to find the cause of
this, hence the RFC for that one patch.

1: x86/IRQ: deal with move-in-progress state in fixup_irqs()
2: x86/IRQ: deal with move cleanup count state in fixup_irqs()
3: x86/IRQ: improve dump_irqs()
4: x86/IRQ: desc->affinity should strictly represent the requested value
5: x86/IRQ: fix locking around vector management
6: x86/IRQ: reduce unused space in struct arch_irq_desc
7: x86/IRQ: drop redundant cpumask_empty() from move_masked_irq()
8: x86/IRQ: make fixup_irqs() skip unconnected internally used interrupts
9: x86/IO-APIC: drop an unused variable from setup_IO_APIC_irqs()

Jan