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| author | Thomas Gleixner <tglx@linutronix.de> | 2024-12-10 11:34:15 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2025-01-15 21:38:53 +0100 |
| commit | 7d04319a05ab17ca3da188d0799af93d3213cb06 (patch) | |
| tree | e96f28aef58ad34f2f35df8a167a7d9118b8ff50 /arch/x86/platform | |
| parent | genirq: Provide IRQCHIP_MOVE_DEFERRED (diff) | |
| download | linux-7d04319a05ab17ca3da188d0799af93d3213cb06.tar.gz linux-7d04319a05ab17ca3da188d0799af93d3213cb06.zip | |
x86/apic: Convert to IRQCHIP_MOVE_DEFERRED
Instead of marking individual interrupts as safe to be migrated in
arbitrary contexts, mark the interrupt chips, which require the interrupt
to be moved in actual interrupt context, with the new IRQCHIP_MOVE_DEFERRED
flag. This makes more sense because this is a per interrupt chip property
and not restricted to individual interrupts.
That flips the logic from the historical opt-out to a opt-in model. This is
simpler to handle for other architectures, which default to unrestricted
affinity setting. It also allows to cleanup the redundant core logic
significantly.
All interrupt chips, which belong to a top-level domain sitting directly on
top of the x86 vector domain are marked accordingly, unless the related
setup code marks the interrupts with IRQ_MOVE_PCNTXT, i.e. XEN.
No functional change intended.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Steve Wahl <steve.wahl@hpe.com>
Acked-by: Wei Liu <wei.liu@kernel.org>
Link: https://lore.kernel.org/all/20241210103335.563277044@linutronix.de
Diffstat (limited to 'arch/x86/platform')
| -rw-r--r-- | arch/x86/platform/uv/uv_irq.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/x86/platform/uv/uv_irq.c b/arch/x86/platform/uv/uv_irq.c index a379501b7a69..4f200ac96ce0 100644 --- a/arch/x86/platform/uv/uv_irq.c +++ b/arch/x86/platform/uv/uv_irq.c @@ -92,8 +92,6 @@ static int uv_domain_alloc(struct irq_domain *domain, unsigned int virq, if (ret >= 0) { if (info->uv.limit == UV_AFFINITY_CPU) irq_set_status_flags(virq, IRQ_NO_BALANCING); - else - irq_set_status_flags(virq, IRQ_MOVE_PCNTXT); chip_data->pnode = uv_blade_to_pnode(info->uv.blade); chip_data->offset = info->uv.offset; @@ -113,7 +111,6 @@ static void uv_domain_free(struct irq_domain *domain, unsigned int virq, BUG_ON(nr_irqs != 1); kfree(irq_data->chip_data); - irq_clear_status_flags(virq, IRQ_MOVE_PCNTXT); irq_clear_status_flags(virq, IRQ_NO_BALANCING); irq_domain_free_irqs_top(domain, virq, nr_irqs); } |