KVM: arm64: vgic-its: Read initial LPI pending table

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The LPI pending status for a GICv3 redistributor is held in a table
in (guest) memory. To achieve reasonable performance, we cache the
pending bit in our struct vgic_irq. The initial pending state must be
read from guest memory upon enabling LPIs for this redistributor.
As we can't access the guest memory while we hold the lpi_list spinlock,
we create a snapshot of the LPI list and iterate over that.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

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Andre Przywara 2016-07-15 12:43:34 +01:00 • committed by Marc Zyngier

parent 3802411d01

commit 33d3bc9556

2 changed files with 100 additions and 0 deletions

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95

virt/kvm/arm/vgic/vgic-its.c

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5

virt/kvm/arm/vgic/vgic.h

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