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KVM: PPC: Book3S HV: XIVE: Fix mapping of passthrough interrupts 

PCI MSI interrupt numbers are now mapped in a PCI-MSI domain but the
underlying calls handling the passthrough of the interrupt in the
guest need a number in the XIVE IRQ domain.

Use the IRQ data mapped in the XIVE IRQ domain and not the one in the
PCI-MSI domain.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210701132750.1475580-16-clg@kaod.org
This commit is contained in:
Cédric Le Goater 2021-07-01 15:27:33 +02:00 committed by Michael Ellerman
parent e5e78b1511
commit 51be9e51a8
2 changed files with 3 additions and 1 deletions
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3
arch/powerpc/kvm/book3s_xive.c
View File

@ -927,7 +927,8 @@ int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
struct kvmppc_xive *xive = kvm->arch.xive;
struct kvmppc_xive_src_block *sb;
struct kvmppc_xive_irq_state *state;
struct irq_data *host_data = irq_get_irq_data(host_irq);
struct irq_data *host_data =
irq_domain_get_irq_data(irq_get_default_host(), host_irq);
unsigned int hw_irq = (unsigned int)irqd_to_hwirq(host_data);
u16 idx;
u8 prio;

1
kernel/irq/irqdomain.c
View File

@ -491,6 +491,7 @@ struct irq_domain *irq_get_default_host(void)
{
return irq_default_domain;
}
EXPORT_SYMBOL_GPL(irq_get_default_host);
static bool irq_domain_is_nomap(struct irq_domain *domain)
{