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Date: Mon, 13 Jul 2020 14:44:51 +0100
From: Will Deacon <will@...nel.org>
To: Krishna Reddy <vdumpa@...dia.com>
Cc: joro@...tes.org, robin.murphy@....com, robh+dt@...nel.org,
treding@...dia.com, jonathanh@...dia.com,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
linux-tegra@...r.kernel.org, yhsu@...dia.com, snikam@...dia.com,
praithatha@...dia.com, talho@...dia.com, bbiswas@...dia.com,
mperttunen@...dia.com, nicolinc@...dia.com, bhuntsman@...dia.com,
nicoleotsuka@...il.com
Subject: Re: [PATCH v10 5/5] iommu/arm-smmu: Add global/context fault
implementation hooks
On Tue, Jul 07, 2020 at 10:00:17PM -0700, Krishna Reddy wrote:
> Add global/context fault hooks to allow vendor specific implementations
> override default fault interrupt handlers.
>
> Update NVIDIA implementation to override the default global/context fault
> interrupt handlers and handle interrupts across the two ARM MMU-500s that
> are programmed identically.
>
> Signed-off-by: Krishna Reddy <vdumpa@...dia.com>
> ---
> drivers/iommu/arm-smmu-nvidia.c | 99 +++++++++++++++++++++++++++++++++
> drivers/iommu/arm-smmu.c | 17 +++++-
> drivers/iommu/arm-smmu.h | 3 +
> 3 files changed, 117 insertions(+), 2 deletions(-)
Given that faults shouldn't occur during normal operation, is this patch
actually necessary?
Will
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