[PATCH] irqchip/gicv3-its: Workaround for GIC-700 erratum 2195890

[Thomas Gleixner]

On Mon, Jun 24 2024 at 18:55, Roman Kagan wrote:
> According to Arm CoreLink GIC-700 erratum 2195890, on GIC revisions
> r0p0, r0p1, r1p0 under certain conditions LPIs may remain in the Pending
> Table until one of a number of external events occurs.
>
> No LPIs are lost but they may not be delivered in a finite time.
>
> The workaround is to issue an INV using GICR_INVLPIR to an unused, in
> range LPI ID to retrigger the search.
>
> Add this workaround to the quirk table.  When the quirk is applicable,
> carve out one LPI ID from the available range and run periodic work to
> do INV to it, in order to prevent GIC from stalling.
>
> TT: https://t.corp.amazon.com/D82032616

Can you please refrain from providing internal links? 

> Signed-off-by: Elad Rosner <eladros at amazon.com>
> Signed-off-by: Mohamed Mediouni <mediou at amazon.com>
> Signed-off-by: Roman Kagan <rkagan at amazon.de>

That Signed-off-by chain is invalid. See Documentation/process/

Thanks,

        tglx