[PATCH v4] irqchip/gicv3-its: Add workaround for hip09 ITS erratum 162100801

[Marc Zyngier]

On Thu, 14 Nov 2024 08:28:13 +0000,
Zhou Wang <wangzhou1 at hisilicon.com> wrote:
> 
> When enabling GICv4.1 in hip09, VMAPP will fail to clear some caches
> during unmapping operation, which will cause some vSGIs lost.
> 
> To fix the issue, invalidate related vPE cache through GICR_INVALLR
> after VMOVP.
> 
> Suggested-by: Marc Zyngier <maz at kernel.org>
> Signed-off-by: Nianyao Tang <tangnianyao at huawei.com>
> Signed-off-by: Zhou Wang <wangzhou1 at hisilicon.com>
> ---
>  Documentation/arch/arm64/silicon-errata.rst |  2 +
>  arch/arm64/Kconfig                          | 11 +++++
>  drivers/irqchip/irq-gic-v3-its.c            | 52 ++++++++++++++++-----
>  3 files changed, 54 insertions(+), 11 deletions(-)
> 

Reviewed-by: Marc Zyngier <maz at kernel.org>

	M.

-- 
Without deviation from the norm, progress is not possible.