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| author |  Oliver Upton <oliver.upton@linux.dev>
| 2024-04-22 20:01:47 +0000 |
|---|---|---|
| committer |  Marc Zyngier <maz@kernel.org>
| 2024-04-25 13:19:55 +0100 |
| commit | 8201d1028caa4fae88e222c4e8cf541fdf45b821 (patch) | |
| tree | bc83f5c5159755629b10a908bf9b920201805ed5 /include/kvm | |
| parent | KVM: arm64: vgic-its: Scope translation cache invalidations to an ITS (diff) | |
| download | linux-8201d1028caa4fae88e222c4e8cf541fdf45b821.tar.gz linux-8201d1028caa4fae88e222c4e8cf541fdf45b821.tar.bz2 linux-8201d1028caa4fae88e222c4e8cf541fdf45b821.zip | |
KVM: arm64: vgic-its: Maintain a translation cache per ITS
Within the context of a single ITS, it is possible to use an xarray to
cache the device ID & event ID translation to a particular irq
descriptor. Take advantage of this to build a translation cache capable
of fitting all valid translations for a given ITS.
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20240422200158.2606761-9-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'include/kvm')
| -rw-r--r-- | include/kvm/arm_vgic.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h index ac7f15ec1586..c15e7fcccb86 100644 --- a/include/kvm/arm_vgic.h +++ b/include/kvm/arm_vgic.h @@ -210,6 +210,12 @@ struct vgic_its { struct mutex its_lock; struct list_head device_list; struct list_head collection_list; + + /* + * Caches the (device_id, event_id) -> vgic_irq translation for + * LPIs that are mapped and enabled. + */ + struct xarray translation_cache; }; struct vgic_state_iter; |