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/openbmc/linux/arch/arm64/kvm/vgic/
H A Dvgic.hdiff 4645d11f4a5538ec1221f36e397cfb0115718ffe Tue Apr 05 13:23:26 CDT 2022 Marc Zyngier <maz@kernel.org> KVM: arm64: vgic-v3: Implement MMIO-based LPI invalidation

Since GICv4.1, it has become legal for an implementation to advertise
GICR_{INVLPIR,INVALLR,SYNCR} while having an ITS, allowing for a more
efficient invalidation scheme (no guest command queue contention when
multiple CPUs are generating invalidations).

Provide the invalidation registers as a primitive to their ITS
counterpart. Note that we don't advertise them to the guest yet
(the architecture allows an implementation to do this).

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Oliver Upton <oupton@google.com>
Link: https://lore.kernel.org/r/20220405182327.205520-4-maz@kernel.org
H A Dvgic-mmio-v3.cdiff 4645d11f4a5538ec1221f36e397cfb0115718ffe Tue Apr 05 13:23:26 CDT 2022 Marc Zyngier <maz@kernel.org> KVM: arm64: vgic-v3: Implement MMIO-based LPI invalidation

Since GICv4.1, it has become legal for an implementation to advertise
GICR_{INVLPIR,INVALLR,SYNCR} while having an ITS, allowing for a more
efficient invalidation scheme (no guest command queue contention when
multiple CPUs are generating invalidations).

Provide the invalidation registers as a primitive to their ITS
counterpart. Note that we don't advertise them to the guest yet
(the architecture allows an implementation to do this).

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Oliver Upton <oupton@google.com>
Link: https://lore.kernel.org/r/20220405182327.205520-4-maz@kernel.org
H A Dvgic-its.cdiff 4645d11f4a5538ec1221f36e397cfb0115718ffe Tue Apr 05 13:23:26 CDT 2022 Marc Zyngier <maz@kernel.org> KVM: arm64: vgic-v3: Implement MMIO-based LPI invalidation

Since GICv4.1, it has become legal for an implementation to advertise
GICR_{INVLPIR,INVALLR,SYNCR} while having an ITS, allowing for a more
efficient invalidation scheme (no guest command queue contention when
multiple CPUs are generating invalidations).

Provide the invalidation registers as a primitive to their ITS
counterpart. Note that we don't advertise them to the guest yet
(the architecture allows an implementation to do this).

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Oliver Upton <oupton@google.com>
Link: https://lore.kernel.org/r/20220405182327.205520-4-maz@kernel.org
/openbmc/linux/include/kvm/
H A Darm_vgic.hdiff 4645d11f4a5538ec1221f36e397cfb0115718ffe Tue Apr 05 13:23:26 CDT 2022 Marc Zyngier <maz@kernel.org> KVM: arm64: vgic-v3: Implement MMIO-based LPI invalidation

Since GICv4.1, it has become legal for an implementation to advertise
GICR_{INVLPIR,INVALLR,SYNCR} while having an ITS, allowing for a more
efficient invalidation scheme (no guest command queue contention when
multiple CPUs are generating invalidations).

Provide the invalidation registers as a primitive to their ITS
counterpart. Note that we don't advertise them to the guest yet
(the architecture allows an implementation to do this).

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Oliver Upton <oupton@google.com>
Link: https://lore.kernel.org/r/20220405182327.205520-4-maz@kernel.org