[Xen-changelog] [xen master] x86/IO-APIC: adjust setting of destinations

[patchbot@xxxxxxx]

commit a85da715cfffbc294589ad4edc4c7564ae6fcc25
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Mon Nov 16 13:11:59 2015 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Nov 16 13:11:59 2015 +0100

    x86/IO-APIC: adjust setting of destinations
    
    setup_IO_APIC_irqs() runs before APs get brought up, so using
    desc->arch.cpu_mask as best risks it being either empty or having bits
    for CPUs other than the BP set. Just use the APIC ID of the only
    online CPU directly.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 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 511cd40..6a71cef 100644
--- a/xen/arch/x86/io_apic.c
+++ b/xen/arch/x86/io_apic.c
@@ -1039,7 +1039,7 @@ static void __init setup_IO_APIC_irqs(void)
                 disable_8259A_irq(irq_to_desc(irq));
 
             desc = irq_to_desc(irq);
-            SET_DEST(entry, logical, cpu_mask_to_apicid(desc->arch.cpu_mask));
+            SET_DEST(entry, logical, get_apic_id());
             spin_lock_irqsave(&ioapic_lock, flags);
             __ioapic_write_entry(apic, pin, 0, entry);
             set_native_irq_info(irq, TARGET_CPUS);
--
generated by git-patchbot for /home/xen/git/xen.git#master

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