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| author | James Sullivan <sullivan.james.f@gmail.com> | 2015-03-18 19:26:03 -0600 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-05-07 11:29:44 +0200 |
| commit | 93bbf0b8bc80f0ee3c629542a4dea14a3537760b (patch) | |
| tree | 25ea3c1c17e61add6335ca92e182e4d1cc588d6c /arch/x86/kvm/lapic.c | |
| parent | b7cb22317305883d50f930cd6bf2fdb37df930c1 (diff) | |
| download | lwn-93bbf0b8bc80f0ee3c629542a4dea14a3537760b.tar.gz lwn-93bbf0b8bc80f0ee3c629542a4dea14a3537760b.zip | |
kvm: x86: Extended struct kvm_lapic_irq with msi_redir_hint for MSI delivery
Extended struct kvm_lapic_irq with bool msi_redir_hint, which will
be used to determine if the delivery of the MSI should target only
the lowest priority CPU in the logical group specified for delivery.
(In physical dest mode, the RH bit is not relevant). Initialized the value
of msi_redir_hint to true when RH=1 in kvm_set_msi_irq(), and initialized
to false in all other cases.
Added value of msi_redir_hint to a debug message dump of an IRQ in
apic_send_ipi().
Signed-off-by: James Sullivan <sullivan.james.f@gmail.com>
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/lapic.c')
| -rw-r--r-- | arch/x86/kvm/lapic.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index ba585d0c42c5..2573b29bbbb3 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -917,6 +917,7 @@ static void apic_send_ipi(struct kvm_lapic *apic) irq.level = (icr_low & APIC_INT_ASSERT) != 0; irq.trig_mode = icr_low & APIC_INT_LEVELTRIG; irq.shorthand = icr_low & APIC_SHORT_MASK; + irq.msi_redir_hint = false; if (apic_x2apic_mode(apic)) irq.dest_id = icr_high; else @@ -926,10 +927,11 @@ static void apic_send_ipi(struct kvm_lapic *apic) apic_debug("icr_high 0x%x, icr_low 0x%x, " "short_hand 0x%x, dest 0x%x, trig_mode 0x%x, level 0x%x, " - "dest_mode 0x%x, delivery_mode 0x%x, vector 0x%x\n", + "dest_mode 0x%x, delivery_mode 0x%x, vector 0x%x, " + "msi_redir_hint 0x%x\n", icr_high, icr_low, irq.shorthand, irq.dest_id, irq.trig_mode, irq.level, irq.dest_mode, irq.delivery_mode, - irq.vector); + irq.vector, irq.msi_redir_hint); kvm_irq_delivery_to_apic(apic->vcpu->kvm, apic, &irq, NULL); } |