Re: [PATCH 13/14] x86_64 irq: Safely cleanup an irq after moving it.

Mika Penttilä <[email protected]> writes:

> Eric W. Biederman wrote:
>>   * Vectors 0x20-0x2f are used for ISA interrupts.
>>   */
>> -#define IRQ0_VECTOR		FIRST_EXTERNAL_VECTOR
>> +#define IRQ0_VECTOR		FIRST_EXTERNAL_VECTOR + 0x10
>>  #define IRQ1_VECTOR		IRQ0_VECTOR + 1
>>  #define IRQ2_VECTOR		IRQ0_VECTOR + 2
>>  #define IRQ3_VECTOR		IRQ0_VECTOR + 3
>> @@ -82,7 +87,7 @@
>>
> I think we have a dependency in i8259.c that irq0 is mapped to vector 0x20.

We did, but I'm pretty certain I removed it when I introduced the
IRQ[0-15]_VECTOR defines.

One of my test machines seems to be delivering irq0 in EXTInt mode
with this patch applied (a bug of another flavor) so I don't think
there is a real issue here.

Eric
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---

• References:
  • Re: What are the real ioapic rte programming constraints?
    • From: Zwane Mwaikambo <[email protected]>
  • Re: What are the real ioapic rte programming constraints?
    • From: [email protected] (Eric W. Biederman)
  • Re: What are the real ioapic rte programming constraints?
    • From: Zwane Mwaikambo <[email protected]>
  • Re: What are the real ioapic rte programming constraints?
    • From: [email protected] (Eric W. Biederman)
  • Conclusions from my investigation about ioapic programming
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 0/14] x86_64 irq related fixes and cleanups.
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 01/14] x86_64 irq: Simplfy __assign_irq_vector
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 02/14] irq: Remove set_native_irq_info
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 03/14] x86_64 irq: Kill declaration of removed array, interrupt
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 04/14] x86_64 irq: Remove the unused vector parameter from ioapic_register_intr
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 05/14] x86_64 irq: Refactor setup_IO_APIC_irq
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 06/14] x86_64 irq: Simplfiy the set_affinity logic.
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 07/14] x86_64 irq: In __DO_ACTION perform the FINAL action for every entry.
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 08/14] x86_64 irq: Use NR_IRQS not NR_IRQ_VECTORS
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 09/14] x86_64 irq: Begin consolidating per_irq data in structures.
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 10/14] x86_64 irq: Simplify assign_irq_vector's arguments.
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 11/14] x86_64 irq: Remove unnecessary irq 0 setup.
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 12/14] x86_64 irq: Add constants for the reserved IRQ vectors.
    • From: [email protected] (Eric W. Biederman)
  • [PATCH 13/14] x86_64 irq: Safely cleanup an irq after moving it.
    • From: [email protected] (Eric W. Biederman)
  • Re: [PATCH 13/14] x86_64 irq: Safely cleanup an irq after moving it.
    • From: Mika Penttilä <[email protected]>

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