Messages in this thread Patch in this message | | | Date | Tue, 27 May 2008 21:19:40 +0100 (BST) | From | "Maciej W. Rozycki" <> | Subject | [PATCH 6/8] x86: I/O APIC: Unmask the second-chance timer interrupt |
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Unmask the timer interrupt line set up in the through-8259A mode explicitly after setup_timer_IRQ0_pin() has set up the I/O APIC interrupt redirection entry to let the two operations be unbound from each other.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> --- patch-2.6.26-rc1-20080505-timer-8259-unmask-0 diff -up --recursive --new-file linux-2.6.26-rc1-20080505.macro/arch/x86/kernel/io_apic_32.c linux-2.6.26-rc1-20080505/arch/x86/kernel/io_apic_32.c --- linux-2.6.26-rc1-20080505.macro/arch/x86/kernel/io_apic_32.c 2008-05-25 22:02:20.000000000 +0000 +++ linux-2.6.26-rc1-20080505/arch/x86/kernel/io_apic_32.c 2008-05-25 22:17:27.000000000 +0000 @@ -2185,6 +2185,7 @@ static inline void __init check_timer(vo * legacy devices should be connected to IO APIC #0 */ setup_timer_IRQ0_pin(apic2, pin2, vector); + unmask_IO_APIC_irq(0); enable_8259A_irq(0); if (timer_irq_works()) { printk("works.\n"); diff -up --recursive --new-file linux-2.6.26-rc1-20080505.macro/arch/x86/kernel/io_apic_64.c linux-2.6.26-rc1-20080505/arch/x86/kernel/io_apic_64.c --- linux-2.6.26-rc1-20080505.macro/arch/x86/kernel/io_apic_64.c 2008-05-25 22:03:58.000000000 +0000 +++ linux-2.6.26-rc1-20080505/arch/x86/kernel/io_apic_64.c 2008-05-25 22:17:54.000000000 +0000 @@ -1691,6 +1691,7 @@ static inline void __init check_timer(vo * legacy devices should be connected to IO APIC #0 */ setup_timer_IRQ0_pin(apic2, pin2, cfg->vector); + unmask_IO_APIC_irq(0); enable_8259A_irq(0); if (timer_irq_works()) { apic_printk(APIC_VERBOSE," works.\n");
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