linux-kernel - Re: [PATCH v3 07/11] iommu: Prepare for separating SVA and IOPF

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Message-ID: <ZOOZrbb13QjGEJ9c@ziepe.ca>
Date:   Mon, 21 Aug 2023 14:06:53 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Lu Baolu <baolu.lu@...ux.intel.com>
Cc:     Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Kevin Tian <kevin.tian@...el.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Nicolin Chen <nicolinc@...dia.com>,
        Yi Liu <yi.l.liu@...el.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        iommu@...ts.linux.dev, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 07/11] iommu: Prepare for separating SVA and IOPF

On Fri, Aug 18, 2023 at 07:40:43AM +0800, Lu Baolu wrote:
> Move iopf_group data structure to iommu.h. This is being done to make it
> a minimal set of faults that a domain's page fault handler should handle.
> 
> Add two new helpers for the domain's page fault handler:
> - iopf_free_group: free a fault group after all faults in the group are
>   handled.
> - iopf_queue_work: queue a given work item for a fault group.
> 
> This will simplify the sequential patches.
> 
> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
> ---
>  include/linux/iommu.h      | 12 ++++++++++
>  drivers/iommu/io-pgfault.c | 49 ++++++++++++++++++++++----------------
>  2 files changed, 41 insertions(+), 20 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

Jason