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H A D | irq-gic-v3-its.c | ed0e4aa9 Fri Nov 08 10:58:03 CST 2019 Marc Zyngier <maz@kernel.org> irqchip/gic-v3-its: Synchronise INT/CLEAR commands targetting a VLPI using VSYNC
We have so far always injected/cleared VLPIs using either INT+SYNC or CLEAR+SYNC sequences, but that's pretty wrong for two reasons:
- SYNC only synchronises physical LPIs - The collection ID that for the associated LPI doesn't match the redistributor the vPE is associated with
Instead, send an {INT,CLEAR}+VSYNC for forwarded LPIs, ensuring that the ITS synchronises against the virtual pending table.
Reported-by: Zenghui Yu <yuzenghui@huawei.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20191108165805.3071-10-maz@kernel.org
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