From: Jason Gunthorpe <jgg@nvidia.com>
To: Mostafa Saleh <smostafa@google.com>
Cc: iommu@lists.linux.dev, "Joerg Roedel (AMD)" <joro@8bytes.org>,
Jean-Philippe Brucker <jpb@kernel.org>,
linux-arm-kernel@lists.infradead.org,
Robin Murphy <robin.murphy@arm.com>,
Will Deacon <will@kernel.org>,
David Matlack <dmatlack@google.com>,
Pasha Tatashin <pasha.tatashin@soleen.com>,
patches@lists.linux.dev, Pranjal Shrivastava <praan@google.com>,
Samiullah Khawaja <skhawaja@google.com>
Subject: Re: [PATCH 6/7] iommu/arm-smmu-v3: Use the generic iommu page table
Date: Fri, 24 Jul 2026 21:31:08 -0300 [thread overview]
Message-ID: <amQDzIhulp2Xn7pu@nvidia.com> (raw)
In-Reply-To: <amO9X2vBl3_jIttb@google.com>
On Fri, Jul 24, 2026 at 07:30:39PM +0000, Mostafa Saleh wrote:
> > @@ -2831,7 +2785,6 @@ static bool arm_smmu_capable(struct device *dev, enum iommu_cap cap)
> > case IOMMU_CAP_ENFORCE_CACHE_COHERENCY:
> > return arm_smmu_master_canwbs(master);
> > case IOMMU_CAP_NOEXEC:
> > - case IOMMU_CAP_DEFERRED_FLUSH:
>
> Why this is removed? That would drop support for FQ domains.
The core code always supports FQ when the driver uses iommupt, so this
is redundant.
Jason
next prev parent reply other threads:[~2026-07-25 0:31 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-06 16:29 [PATCH 0/7] Use the generic iommu page table for SMMUv3 Jason Gunthorpe
2026-07-06 16:29 ` [PATCH 1/7] iommupt: Remove the sanity check for pt_num_items_lg2() at the top level Jason Gunthorpe
2026-07-24 17:49 ` Mostafa Saleh
2026-07-06 16:29 ` [PATCH 2/7] iommupt/kunit: Skip test configs without supported features Jason Gunthorpe
2026-07-06 16:29 ` [PATCH 3/7] iommupt: Add the 64 bit ARMv8 page table format Jason Gunthorpe
2026-07-24 19:24 ` Mostafa Saleh
2026-07-25 1:12 ` Jason Gunthorpe
2026-07-06 16:29 ` [PATCH 4/7] iommu/arm-smmu-v3: Remove io-pgtable-arm from sva.c Jason Gunthorpe
2026-07-24 19:26 ` Mostafa Saleh
2026-07-06 16:29 ` [PATCH 5/7] iommu/arm-smmu-v3: Move the DMA API comment to flush_iotlb_all Jason Gunthorpe
2026-07-24 19:26 ` Mostafa Saleh
2026-07-06 16:29 ` [PATCH 6/7] iommu/arm-smmu-v3: Use the generic iommu page table Jason Gunthorpe
2026-07-24 19:30 ` Mostafa Saleh
2026-07-25 0:31 ` Jason Gunthorpe [this message]
2026-07-06 16:29 ` [PATCH 7/7] iommu: Remove pgsize from iommu_iotlb_gather Jason Gunthorpe
2026-07-24 19:36 ` [PATCH 0/7] Use the generic iommu page table for SMMUv3 Mostafa Saleh
2026-07-25 0:42 ` Jason Gunthorpe
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