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openSUSE:Evergreen:Maintenance:114
xen.openSUSE_Evergreen_11.4
25688-x86-nr_irqs_gsi.patch
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File 25688-x86-nr_irqs_gsi.patch of Package xen.openSUSE_Evergreen_11.4
# HG changeset patch # User Jan Beulich <jbeulich@suse.com> # Date 1343384533 -7200 # Node ID e6266fc76d08b7297fdce7a6ff66cde58fe87ef8 # Parent fab4434f514532dba54ff4eec8b8ffa230f8330f 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> --- a/xen/arch/x86/io_apic.c +++ b/xen/arch/x86/io_apic.c @@ -2616,7 +2616,7 @@ 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;
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