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KVM: arm/arm64: Enable MSI routing

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Up to now, only irqchip routing entries could be set. This patch
adds the capability to insert MSI routing entries.

For ARM64, let's also increase KVM_MAX_IRQ_ROUTES to 4096: this
include SPI irqchip routes plus MSI routes. In the future this
might be extended.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Eric Auger
2016-07-22 16:20:42 +00:00
committed by Marc Zyngier
parent 180ae7b118
commit 995a0ee980
4 changed files with 28 additions and 9 deletions
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3
Documentation/virtual/kvm/api.txt
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@@ -2381,6 +2381,9 @@ On arm/arm64, gsi routing being supported, the following can happen:
- in case no routing entry is associated to this gsi, injection fails
- in case the gsi is associated to an irqchip routing entry,
irqchip.pin + 32 corresponds to the injected SPI ID.
- in case the gsi is associated to an MSI routing entry, the MSI
message and device ID are translated into an LPI (support restricted
to GICv3 ITS in-kernel emulation).
4.76 KVM_PPC_ALLOCATE_HTAB