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apic: add send_msi() to APICCommonClass

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The MMIO based interface to APIC doesn't work well with MSIs that have
upper address bits set (remapped x2APIC MSIs).  A specialized interface
is a quick and dirty way to avoid the shortcoming.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Radim Krčmář 2016-10-10 17:28:43 +02:00 • committed by Eduardo Habkost
parent 2f114315dc
commit 267ee35715
4 changed files with 29 additions and 8 deletions
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19
hw/i386/kvm/apic.c
View file

@ -169,6 +169,17 @@ static void kvm_apic_external_nmi(APICCommonState *s)
run_on_cpu(CPU(s->cpu), do_inject_external_nmi, s);
}
static void kvm_send_msi(MSIMessage *msg)
{
int ret;
ret = kvm_irqchip_send_msi(kvm_state, *msg);
if (ret < 0) {
fprintf(stderr, "KVM: injection failed, MSI lost (%s)\n",
strerror(-ret));
}
}
static uint64_t kvm_apic_mem_read(void *opaque, hwaddr addr,
unsigned size)
{
@ -179,13 +190,8 @@ static void kvm_apic_mem_write(void *opaque, hwaddr addr,
uint64_t data, unsigned size)
{
MSIMessage msg = { .address = addr, .data = data };
int ret;
ret = kvm_irqchip_send_msi(kvm_state, msg);
if (ret < 0) {
fprintf(stderr, "KVM: injection failed, MSI lost (%s)\n",
strerror(-ret));
}
kvm_send_msi(&msg);
}
static const MemoryRegionOps kvm_apic_io_ops = {
@ -232,6 +238,7 @@ static void kvm_apic_class_init(ObjectClass *klass, void *data)
k->enable_tpr_reporting = kvm_apic_enable_tpr_reporting;
k->vapic_base_update = kvm_apic_vapic_base_update;
k->external_nmi = kvm_apic_external_nmi;
k->send_msi = kvm_send_msi;
}
static const TypeInfo kvm_apic_info = {