irqchip/gic-v4.1: Properly lock VPEs when doing a directLPI invalidation
We normally rely on the irq_to_cpuid_[un]lock() primitives to make sure nothing will change col->idx while performing a LPI invalidation. However, these primitives do not cover VPE doorbells, and we have some open-coded locking for that. Unfortunately, this locking is pretty bogus. Instead, extend the above primitives to cover VPE doorbells and convert the whole thing to it. Fixes: f3a05921 ("irqchip/gic-v4.1: Ensure mutual exclusion between vPE affinity change and RD access") Reported-by:Kunkun Jiang <jiangkunkun@huawei.com> Signed-off-by:
Marc Zyngier <maz@kernel.org> Cc: Zenghui Yu <yuzenghui@huawei.com> Cc: wanghaibin.wang@huawei.com Tested-by:
Kunkun Jiang <jiangkunkun@huawei.com> Reviewed-by:
Zenghui Yu <yuzenghui@huawei.com> Link: https://lore.kernel.org/r/20230617073242.3199746-1-maz@kernel.org
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