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| author | Jan Beulich <jbeulich@suse.com> | 2012-07-27 12:22:13 +0200 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2012-07-27 12:22:13 +0200 |
| commit | 62a2e72600271b2426c7198abb4165a3703cf8a6 (patch) | |
| tree | 84a70319eb44c0a1c6ad8f15b9cd1a1b53118480 | |
| parent | 8b0ea8ec8c8d6f5a55939707625c0231a29110bf (diff) | |
| download | xen-62a2e72600271b2426c7198abb4165a3703cf8a6.tar.gz xen-62a2e72600271b2426c7198abb4165a3703cf8a6.tar.bz2 xen-62a2e72600271b2426c7198abb4165a3703cf8a6.zip | |
x86: fix off-by-one in nr_irqs_gsi calculation
highest_gsi() returns the last valid GSI, not a count.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Joe Jin <joe.jin@oracle.com>
Acked-by: Keir Fraser <keir@xen.org>
| -rw-r--r-- | xen/arch/x86/io_apic.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/xen/arch/x86/io_apic.c b/xen/arch/x86/io_apic.c index d213f2c388..85191e0af2 100644 --- a/xen/arch/x86/io_apic.c +++ b/xen/arch/x86/io_apic.c @@ -2531,7 +2531,7 @@ void __init init_ioapic_mappings(void) } } - nr_irqs_gsi = max(nr_irqs_gsi, highest_gsi()); + nr_irqs_gsi = max(nr_irqs_gsi, highest_gsi() + 1); if ( max_gsi_irqs == 0 ) max_gsi_irqs = nr_irqs ? nr_irqs / 8 : PAGE_SIZE; |