KVM: arm64: vgic-its: Get rid of the lpi_list_lock

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The last genuine use case for the lpi_list_lock was the global LPI
translation cache, which has been removed in favor of a per-ITS xarray.
Remove a layer from the locking puzzle by getting rid of it.

vgic_add_lpi() still has a critical section that needs to protect
against the insertion of other LPIs; change it to take the LPI xarray's
xa_lock to retain this property.

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20240422200158.2606761-13-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>

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Oliver Upton 2024-04-22 20:01:51 +00:00 • committed by Marc Zyngier

parent ec39bbfd55

commit 481c9ee846

4 changed files with 5 additions and 10 deletions

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1

arch/arm64/kvm/vgic/vgic-init.c

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arch/arm64/kvm/vgic/vgic-its.c

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arch/arm64/kvm/vgic/vgic.c

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include/kvm/arm_vgic.h

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