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| author | Eric Auger <eric.auger@redhat.com> | 2016-07-22 18:20:41 +0200 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2016-07-22 19:52:01 +0200 |
| commit | 180ae7b1182344ca617d8b5200306b02a6b5075d (patch) | |
| tree | 927863bc629927451b925be0a483ec9e57307cd3 /arch/arm64/kvm/irq.h | |
| parent | KVM: Move kvm_setup_default/empty_irq_routing declaration in arch specific he... (diff) | |
| download | linux-180ae7b1182344ca617d8b5200306b02a6b5075d.tar.xz linux-180ae7b1182344ca617d8b5200306b02a6b5075d.zip | |
KVM: arm/arm64: Enable irqchip routing
This patch adds compilation and link against irqchip.
Main motivation behind using irqchip code is to enable MSI
routing code. In the future irqchip routing may also be useful
when targeting multiple irqchips.
Routing standard callbacks now are implemented in vgic-irqfd:
- kvm_set_routing_entry
- kvm_set_irq
- kvm_set_msi
They only are supported with new_vgic code.
Both HAVE_KVM_IRQCHIP and HAVE_KVM_IRQ_ROUTING are defined.
KVM_CAP_IRQ_ROUTING is advertised and KVM_SET_GSI_ROUTING is allowed.
So from now on IRQCHIP routing is enabled and a routing table entry
must exist for irqfd injection to succeed for a given SPI. This patch
builds a default flat irqchip routing table (gsi=irqchip.pin) covering
all the VGIC SPI indexes. This routing table is overwritten by the
first first user-space call to KVM_SET_GSI_ROUTING ioctl.
MSI routing setup is not yet allowed.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm64/kvm/irq.h')
| -rw-r--r-- | arch/arm64/kvm/irq.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm64/kvm/irq.h b/arch/arm64/kvm/irq.h new file mode 100644 index 000000000000..b74099b905fd --- /dev/null +++ b/arch/arm64/kvm/irq.h @@ -0,0 +1,19 @@ +/* + * irq.h: in kernel interrupt controller related definitions + * Copyright (c) 2016 Red Hat, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This header is included by irqchip.c. However, on ARM, interrupt + * controller declarations are located in include/kvm/arm_vgic.h since + * they are mostly shared between arm and arm64. + */ + +#ifndef __IRQ_H +#define __IRQ_H + +#include <kvm/arm_vgic.h> + +#endif |