linux-kernel - Re: [PATCH v8 13/14] iommu/arm-smmu-v3: Report events that belong to devices attached to vIOMMU

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Message-ID: <Z74EdXC5YzvmJokk@google.com>
Date: Tue, 25 Feb 2025 17:57:09 +0000
From: Pranjal Shrivastava <praan@...gle.com>
To: Nicolin Chen <nicolinc@...dia.com>
Cc: jgg@...dia.com, kevin.tian@...el.com, corbet@....net, will@...nel.org,
	joro@...tes.org, suravee.suthikulpanit@....com,
	robin.murphy@....com, dwmw2@...radead.org, baolu.lu@...ux.intel.com,
	linux-kernel@...r.kernel.org, iommu@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kselftest@...r.kernel.org, linux-doc@...r.kernel.org,
	eric.auger@...hat.com, jean-philippe@...aro.org, mdf@...nel.org,
	mshavit@...gle.com, shameerali.kolothum.thodi@...wei.com,
	smostafa@...gle.com, ddutile@...hat.com, yi.l.liu@...el.com,
	patches@...ts.linux.dev
Subject: Re: [PATCH v8 13/14] iommu/arm-smmu-v3: Report events that belong to
 devices attached to vIOMMU

On Tue, Feb 25, 2025 at 09:25:41AM -0800, Nicolin Chen wrote:
> Aside from the IOPF framework, iommufd provides an additional pathway to
> report hardware events, via the vEVENTQ of vIOMMU infrastructure.
> 
> Define an iommu_vevent_arm_smmuv3 uAPI structure, and report stage-1 events
> in the threaded IRQ handler. Also, add another four event record types that
> can be forwarded to a VM.
> 
> Reviewed-by: Kevin Tian <kevin.tian@...el.com>
> Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
> Reviewed-by: Pranjal Shrivastavat <praan@...gle.com>
> Signed-off-by: Nicolin Chen <nicolinc@...dia.com>
> ---
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h   |  7 +++
>  include/uapi/linux/iommufd.h                  | 23 +++++++
>  .../arm/arm-smmu-v3/arm-smmu-v3-iommufd.c     | 17 ++++++
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c   | 60 +++++++++++--------
>  4 files changed, 82 insertions(+), 25 deletions(-)
> 

Apologies for my spelling error in [1]. It's supposed to be:

Reviewed-by: Pranjal Shrivastava <praan@...gle.com>

Correct spelling in [2].

Thanks,
Praan

[1] https://lore.kernel.org/all/Z73zvIbsXzJMCaNt@google.com/
[2] https://lore.kernel.org/all/Z730M3XptvDRObBp@google.com/