Re: [Linuxarm] [PATCH v1 0/2] irqchip/gic-v3-its: don't set bitmap for LPI which user didn't allocate

[John Garry]

On 08/02/2021 10:58, Luo Jiaxing wrote:
> When the number of online CPUs is less than 16, we found that it will fail
> to allocate 32 MSI interrupts (including 16 affinity interrupts) after the
> hisi_sas module is unloaded and then reloaded.
>
> After analysis, it is found that a bug exists when the ITS releases
> interrupt resources, and this patch set contains a bugfix patch and a patch
> for appending debugging information.

Please note that this issue has already been reported:
https://lore.kernel.org/lkml/fd88ce05-8aee-5b1f-5ab6-be88fa53d3aa@xxxxxxxxxx/

> Luo Jiaxing (2):
>    irqchip/gic-v3-its: don't set bitmap for LPI which user didn't
>      allocate
>    genirq/msi: add an error print when __irq_domain_alloc_irqs() failed
>
>   drivers/irqchip/irq-gic-v3-its.c | 4 ++++
>   kernel/irq/msi.c                 | 1 +
>   2 files changed, 5 insertions(+)