Messages in this thread Patch in this message | | | Date | Tue, 27 May 2008 21:19:45 +0100 (BST) | From | "Maciej W. Rozycki" <> | Subject | [PATCH 7/8] x86: I/O APIC: Keep the timer IRQ masked during set-up |
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Keep the timer interrupt line masked when reconfiguring its interrupt redirection entry in the I/O APIC.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> --- patch-2.6.26-rc1-20080505-timer-extint-mask-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 22:17:27.000000000 +0000 +++ linux-2.6.26-rc1-20080505/arch/x86/kernel/io_apic_32.c 2008-05-25 22:24:53.000000000 +0000 @@ -1316,7 +1316,7 @@ static void __init setup_timer_IRQ0_pin( * to the first CPU. */ entry.dest_mode = INT_DEST_MODE; - entry.mask = 0; /* unmask IRQ now */ + entry.mask = 1; /* mask IRQ now */ entry.dest.logical.logical_dest = cpu_mask_to_apicid(TARGET_CPUS); entry.delivery_mode = INT_DELIVERY_MODE; entry.polarity = 0; 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 22:17:54.000000000 +0000 +++ linux-2.6.26-rc1-20080505/arch/x86/kernel/io_apic_64.c 2008-05-25 22:26:43.000000000 +0000 @@ -911,7 +911,7 @@ static void __init setup_timer_IRQ0_pin( * to the first CPU. */ entry.dest_mode = INT_DEST_MODE; - entry.mask = 0; /* unmask IRQ now */ + entry.mask = 1; /* mask IRQ now */ entry.dest = cpu_mask_to_apicid(TARGET_CPUS); entry.delivery_mode = INT_DELIVERY_MODE; entry.polarity = 0;
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