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x86: size NR_IRQS on 32-bit systems the same way as 64-bit

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Impact: make NR_IRQS big enough for system with lots of apic/pins

If lots of IO_APIC's are there (or can be there), size the same way
as 64-bit, depending on MAX_IO_APICS and NR_CPUS.

This fixes the boot problem reported by Ben Hutchings on a 32-bit
server with 5 IO-APICs and 240 IO-APIC pins.

Signed-off-by: Yinghai <yinghai@kernel.org>
Tested-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Yinghai Lu 2008-11-04 14:10:13 -08:00 committed by Ingo Molnar
parent c78d0cf292
commit 1b48976880
1 changed files with 7 additions and 15 deletions
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22
arch/x86/include/asm/irq_vectors.h
View file

@ -101,30 +101,22 @@
#define LAST_VM86_IRQ 15
#define invalid_vm86_irq(irq) ((irq) < 3 || (irq) > 15)
#ifdef CONFIG_X86_64
#if defined(CONFIG_X86_IO_APIC) && !defined(CONFIG_PARAVIRT) && !defined(CONFIG_X86_VISWS) && !defined(CONFIG_X86_VOYAGER)
# if NR_CPUS < MAX_IO_APICS
# define NR_IRQS (NR_VECTORS + (32 * NR_CPUS))
# else
# define NR_IRQS (NR_VECTORS + (32 * MAX_IO_APICS))
# endif
#elif !defined(CONFIG_X86_VOYAGER)
# if defined(CONFIG_X86_IO_APIC) || defined(CONFIG_PARAVIRT) || defined(CONFIG_X86_VISWS)
# define NR_IRQS 224
# else /* IO_APIC || PARAVIRT */
# define NR_IRQS 16
# endif
#else /* !VISWS && !VOYAGER */
#elif defined(CONFIG_PARAVIRT) || defined(CONFIG_X86_VISWS) || defined(CONFIG_X86_VOYAGER)
# define NR_IRQS 224
#endif /* VISWS */
#else /* IO_APIC || PARAVIRT */
# define NR_IRQS 16
#endif
/* Voyager specific defines */
/* These define the CPIs we use in linux */