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| author | Jan Beulich <jbeulich@suse.com> | 2012-07-30 13:39:47 +0100 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2012-07-30 13:39:47 +0100 |
| commit | a49147f3b26ae6b5f6a7ea886628926b01c00b43 (patch) | |
| tree | d80f69acf6d773067d4a84ad10542b2fc8b62217 | |
| parent | 93aa239406bc3dc5b801b4a440d66e25d1e3d1e7 (diff) | |
| download | xen-a49147f3b26ae6b5f6a7ea886628926b01c00b43.tar.gz xen-a49147f3b26ae6b5f6a7ea886628926b01c00b43.tar.bz2 xen-a49147f3b26ae6b5f6a7ea886628926b01c00b43.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>
xen-unstable changeset: 25688:e6266fc76d08
xen-unstable date: Fri Jul 27 12:22:13 2012 +0200
| -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 ea627672af..842e4cf21d 100644 --- a/xen/arch/x86/io_apic.c +++ b/xen/arch/x86/io_apic.c @@ -2589,7 +2589,7 @@ 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 ( !smp_found_config || skip_ioapic_setup || nr_irqs_gsi < 16 ) nr_irqs_gsi = 16; |