IRQ handling patches backport to 4.14 stable
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- v1 Latest6 patches 7 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/6 | genirq: Update code comments wrt recycled thread_maskkernel/ | +4 | 0 replies | |
| 2/6 | genirq: Synchronize only with single thread on free_irq()kernel/ | +23 | 0 replies | |
| 3/6 | genirq: Delay deactivation in free_irq()kernel/ kernel/ kernel/ +2 more | +21 | 0 replies | |
| 4/6 | genirq: Fix misleading synchronize_irq() documentationkernel/ | +2 | 0 replies | |
| 5/6 | genirq: Add optional hardware synchronization for shutdownkernel/ kernel/ | +38 | 0 replies | |
| 6/6 | x86/ioapic: Implement irq_get_irqchip_state() callbackarch/ | +46 | 0 replies |
Reviews trailers per patch
2 of 6 patches have a Reviewed-by or Acked-by.
| Patch | Marc Zyngier |
|---|---|
| 1/6 | |
| 2/6 | |
| 3/6 | R-b |
| 4/6 | |
| 5/6 | R-b T-b |
| 6/6 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH 0/6] IRQ handling patches backport to 4.14 stable
This patch series backports a bunch of patches related IRQ handling with respect to freeing the irq line while IRQ is in flight at CPU or at the hardware level.
Recently we saw this issue in serial 8250 driver where the IRQ was being freed while the irq was in flight or not yet delivered to the CPU. As a result the irqchip was going into a wedged state and IRQ was not getting delivered to the cpu. These patches helped fixed the issue in 4.14 kernel.
Let us know if more patches need backporting.
Lukas Wunner (2):
genirq: Update code comments wrt recycled thread_mask
genirq: Synchronize only with single thread on free_irq()
Thomas Gleixner (4):
genirq: Delay deactivation in free_irq()
genirq: Fix misleading synchronize_irq() documentation
genirq: Add optional hardware synchronization for shutdown x86/ioapic: Implement irq_get_irqchip_state() callback
arch/x86/kernel/apic/io_apic.c | 46 ++++++++++++++ kernel/irq/autoprobe.c | 6 +- kernel/irq/chip.c | 6 ++ kernel/irq/cpuhotplug.c | 2 +- kernel/irq/internals.h | 5 ++ kernel/irq/manage.c | 106 ++++++++++++++++++++++----------- 6 files changed, 133 insertions(+), 38 deletions(-)
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2.37.1