KVM: arm64: vgic-v3: Refactor GICv3 SGI generation

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As we're about to change the way SGIs are sent, start by splitting
out some of the basic functionnality: instead of intermingling
the broadcast and non-broadcast cases with the actual SGI generation,
perform the following cleanups:

- move the SGI queuing into its own helper
- split the broadcast code from the affinity-driven code
- replace the mask/shift combinations with FIELD_GET()
- fix the confusion between vcpu_id and vcpu when handling
  the broadcast case

The result is much more readable, and paves the way for further
optimisations.

Tested-by: Joey Gouly <joey.gouly@arm.com>
Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230927090911.3355209-4-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

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Marc Zyngier 2023-09-27 10:09:03 +01:00 • committed by Oliver Upton

parent d455d366c4

commit f3f60a5653

1 changed files with 59 additions and 51 deletions

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arch/arm64/kvm/vgic/vgic-mmio-v3.c

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