From: Jason Gunthorpe <jgg@nvidia.com>
To: Nicolin Chen <nicolinc@nvidia.com>
Cc: iommu@lists.linux.dev, Joerg Roedel <joro@8bytes.org>,
linux-arm-kernel@lists.infradead.org,
Robin Murphy <robin.murphy@arm.com>,
Will Deacon <will@kernel.org>, Eric Auger <eric.auger@redhat.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Moritz Fischer <mdf@kernel.org>,
Michael Shavit <mshavit@google.com>,
patches@lists.linux.dev,
Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>
Subject: Re: [PATCH v7 06/14] iommu/arm-smmu-v3: Do not use master->sva_enable to restrict attaches
Date: Tue, 14 May 2024 19:51:25 -0300 [thread overview]
Message-ID: <ZkPq7RvLKkIQm1LT@nvidia.com> (raw)
In-Reply-To: <ZkGsr80xDAyVvFMk@nvidia.com>
On Sun, May 12, 2024 at 11:01:19PM -0700, Nicolin Chen wrote:
> > diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
> > index d31caceb584984..7627cb53da55b9 100644
> > --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
> > +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
> > @@ -628,7 +628,7 @@ static int arm_smmu_sva_set_dev_pasid(struct iommu_domain *domain,
> > struct arm_smmu_cd target;
> > int ret;
> >
> > - if (mm_get_enqcmd_pasid(mm) != id)
> > + if (mm_get_enqcmd_pasid(mm) != id || !master->cd_table.in_ste)
> > return -EINVAL;
>
> The in_ste is added in PATCH-2 and the new arm_smmu_set_pasid()
> in the same patch is also guarded by the in_ste. So, it feels a
> little more related by moving this check here into PATCH-2 too?
Hmm, actually I think we can just remove this hunk now. The
arm_smmu_set_pasid() a few lines below will check this already. It was
here because before I didn't have the error unwind for
arm_smmu_set_pasid() failure. Now that we have it we can just delete
this.
Thanks,
Jason
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next prev parent reply other threads:[~2024-05-14 22:51 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-08 18:57 [PATCH v7 00/14] Update SMMUv3 to the modern iommu API (part 2b/3) Jason Gunthorpe
2024-05-08 18:57 ` [PATCH v7 01/14] iommu/arm-smmu-v3: Convert to domain_alloc_sva() Jason Gunthorpe
2024-05-09 18:21 ` Nicolin Chen
2024-05-09 18:40 ` Jason Gunthorpe
2024-05-08 18:57 ` [PATCH v7 02/14] iommu/arm-smmu-v3: Start building a generic PASID layer Jason Gunthorpe
2024-05-11 2:32 ` Nicolin Chen
2024-05-12 13:12 ` Jason Gunthorpe
2024-05-12 20:54 ` Nicolin Chen
2024-05-08 18:57 ` [PATCH v7 03/14] iommu/arm-smmu-v3: Make smmu_domain->devices into an allocated list Jason Gunthorpe
2024-05-11 3:12 ` Nicolin Chen
2024-05-08 18:57 ` [PATCH v7 04/14] iommu/arm-smmu-v3: Make changing domains be hitless for ATS Jason Gunthorpe
2024-05-11 21:56 ` Nicolin Chen
2024-05-24 15:46 ` Jason Gunthorpe
2024-05-08 18:57 ` [PATCH v7 05/14] iommu/arm-smmu-v3: Add ssid to struct arm_smmu_master_domain Jason Gunthorpe
2024-05-12 9:03 ` Nicolin Chen
2024-05-08 18:57 ` [PATCH v7 06/14] iommu/arm-smmu-v3: Do not use master->sva_enable to restrict attaches Jason Gunthorpe
2024-05-13 6:01 ` Nicolin Chen
2024-05-13 20:58 ` Nicolin Chen
2024-05-14 22:51 ` Jason Gunthorpe [this message]
2024-05-15 0:36 ` Nicolin Chen
2024-05-08 18:57 ` [PATCH v7 07/14] iommu/arm-smmu-v3: Thread SSID through the arm_smmu_attach_*() interface Jason Gunthorpe
2024-05-13 6:32 ` Nicolin Chen
2024-05-13 22:28 ` Jason Gunthorpe
2024-05-08 18:57 ` [PATCH v7 08/14] iommu/arm-smmu-v3: Make SVA allocate a normal arm_smmu_domain Jason Gunthorpe
2024-05-13 6:36 ` Nicolin Chen
2024-05-08 18:57 ` [PATCH v7 09/14] iommu/arm-smmu-v3: Keep track of arm_smmu_master_domain for SVA Jason Gunthorpe
2024-05-13 6:41 ` Nicolin Chen
2024-05-08 18:57 ` [PATCH v7 10/14] iommu/arm-smmu-v3: Put the SVA mmu notifier in the smmu_domain Jason Gunthorpe
2024-05-13 21:23 ` Nicolin Chen
2024-05-17 19:48 ` Jason Gunthorpe
2024-05-17 20:34 ` Nicolin Chen
2024-05-08 18:57 ` [PATCH v7 11/14] iommu/arm-smmu-v3: Allow IDENTITY/BLOCKED to be set while PASID is used Jason Gunthorpe
2024-05-13 7:11 ` Nicolin Chen
2024-05-14 23:02 ` Jason Gunthorpe
2024-05-15 0:32 ` Nicolin Chen
2024-05-08 18:57 ` [PATCH v7 12/14] iommu/arm-smmu-v3: Test the STE S1DSS functionality Jason Gunthorpe
2024-05-13 21:34 ` Nicolin Chen
2024-05-08 18:57 ` [PATCH v7 13/14] iommu/arm-smmu-v3: Allow a PASID to be set when RID is IDENTITY/BLOCKED Jason Gunthorpe
2024-05-13 8:31 ` Nicolin Chen
2024-05-21 17:51 ` Jason Gunthorpe
2024-05-08 18:57 ` [PATCH v7 14/14] iommu/arm-smmu-v3: Allow setting a S1 domain to a PASID Jason Gunthorpe
2024-05-13 8:34 ` Nicolin Chen
2024-05-09 9:39 ` [PATCH v7 00/14] Update SMMUv3 to the modern iommu API (part 2b/3) Nicolin Chen
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