KVM: vgic-v4: Track the number of VLPIs per vcpu

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In order to find out whether a vcpu is likely to be the target of
VLPIs (and to further optimize the way we deal with those), let's
track the number of VLPIs a vcpu can receive.

This gets implemented with an atomic variable that gets incremented
or decremented on map, unmap and move of a VLPI.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Reviewed-by: Christoffer Dall <christoffer.dall@arm.com>
Link: https://lore.kernel.org/r/20191107160412.30301-2-maz@kernel.org

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Marc Zyngier 2019-11-07 16:04:11 +00:00

parent 9090825fa9

commit 5bd90b0989

4 changed files with 8 additions and 0 deletions

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include/linux/irqchip/arm-gic-v4.h

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