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| author | Alan Mayer | 2008-04-15 22:36:56 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2008-05-12 21:28:06 +0200 |
| commit | 305b92a2323eeaa4b481f409d54f778dd7e21a46 (patch) | |
| tree | 0f32832b033de27b2ae5909bb06d4eabdd1a9b0b /arch/x86/kernel/io_apic_32.c | |
| parent | x86: move eisa_set_level_irq declaration to header (diff) | |
| download | kernel-qcow2-linux-305b92a2323eeaa4b481f409d54f778dd7e21a46.tar.gz kernel-qcow2-linux-305b92a2323eeaa4b481f409d54f778dd7e21a46.tar.xz kernel-qcow2-linux-305b92a2323eeaa4b481f409d54f778dd7e21a46.zip | |
x86: change FIRST_SYSTEM_VECTOR to a variable
The SGI UV system needs several more system vectors than a vanilla
x86_64 system. Rather than burden the other archs with extra system
vectors that they don't use, change FIRST_SYSTEM_VECTOR to a variable,
so that it can be dynamic.
Signed-off-by: Alan Mayer <ajm@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/io_apic_32.c')
| -rw-r--r-- | arch/x86/kernel/io_apic_32.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86/kernel/io_apic_32.c b/arch/x86/kernel/io_apic_32.c index a40d54fc1fdd..0ae4a9d00ce8 100644 --- a/arch/x86/kernel/io_apic_32.c +++ b/arch/x86/kernel/io_apic_32.c @@ -83,6 +83,10 @@ int mp_irq_entries; static int disable_timer_pin_1 __initdata; +int first_system_vector = 0xfe; + +char system_vectors[NR_VECTORS] = { [0 ... NR_VECTORS-1] = SYS_VECTOR_FREE}; + /* * Rough estimation of how many shared IRQs there are, can * be changed anytime. @@ -1176,7 +1180,7 @@ static int __assign_irq_vector(int irq) offset = current_offset; next: vector += 8; - if (vector >= FIRST_SYSTEM_VECTOR) { + if (vector >= first_system_vector) { offset = (offset + 1) % 8; vector = FIRST_DEVICE_VECTOR + offset; } @@ -2269,7 +2273,7 @@ void __init setup_IO_APIC(void) int i; /* Reserve all the system vectors. */ - for (i = FIRST_SYSTEM_VECTOR; i < NR_VECTORS; i++) + for (i = first_system_vector; i < NR_VECTORS; i++) set_bit(i, used_vectors); enable_IO_APIC(); |