Messages in this thread Patch in this message | | | From | Jeremy Fitzhardinge <> | Subject | [PATCH 06/17] x86/io_apic: add get_nr_irqs_gsi() | Date | Wed, 27 May 2009 00:37:19 -0700 |
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From: Jeremy Fitzhardinge <jeremy@f9-builder.(none)>
Add get_nr_irqs_gsi() to return nr_irqs_gsi. Xen will use this to determine how many irqs it needs to reserve for hardware irqs.
[ Impact: new interface to get max GSI ]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Reviewed-by: "H. Peter Anvin" <hpa@zytor.com> --- arch/x86/include/asm/io_apic.h | 1 + arch/x86/kernel/apic/io_apic.c | 5 +++++ 2 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h index 8cbfe73..e33ccb7 100644 --- a/arch/x86/include/asm/io_apic.h +++ b/arch/x86/include/asm/io_apic.h @@ -181,6 +181,7 @@ extern void reinit_intr_remapped_IO_APIC(int intr_remapping, #endif extern void probe_nr_irqs_gsi(void); +extern int get_nr_irqs_gsi(void); extern int setup_ioapic_entry(int apic, int irq, struct IO_APIC_route_entry *entry, diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index c24f116..07dc530 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -3917,6 +3917,11 @@ void __init probe_nr_irqs_gsi(void) printk(KERN_DEBUG "nr_irqs_gsi: %d\n", nr_irqs_gsi); } +int get_nr_irqs_gsi(void) +{ + return nr_irqs_gsi; +} + #ifdef CONFIG_SPARSE_IRQ int __init arch_probe_nr_irqs(void) { -- 1.6.0.6
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