From: Mostafa Saleh <smostafa@google•com>
To: Jason Gunthorpe <jgg@ziepe•ca>
Cc: linux-arm-kernel@lists•infradead.org,
linux-kernel@vger•kernel.org, kvmarm@lists•linux.dev,
iommu@lists•linux.dev, catalin.marinas@arm•com, will@kernel•org,
maz@kernel•org, oliver.upton@linux•dev, joey.gouly@arm•com,
suzuki.poulose@arm•com, yuzenghui@huawei•com, joro@8bytes•org,
jean-philippe@linaro•org, mark.rutland@arm•com,
qperret@google•com, tabba@google•com, vdonnefort@google•com,
sebastianene@google•com, keirf@google•com
Subject: Re: [PATCH v6 06/25] iommu/io-pgtable-arm: Rework to use the iommu-pages API
Date: Wed, 13 May 2026 21:54:46 +0000 [thread overview]
Message-ID: <agTzJuKQoBqfQkq7@google.com> (raw)
In-Reply-To: <20260511141849.GO9285@ziepe.ca>
On Mon, May 11, 2026 at 11:18:49AM -0300, Jason Gunthorpe wrote:
> On Mon, May 11, 2026 at 11:16:47AM +0000, Mostafa Saleh wrote:
> > > IDK, why? virt_to_phys() is part of the iommu-pages API, I'd just
> > > leave it.. If you want to narrow it then #define it for pkvm when
> > > compiling this file..
> >
> > It is not going to be part of the iommu-pages API, I meant in
> > io-pgtable-arm, we will use something arm_lpae_virt_to_phys()...
> > which is then implemented differently for pkvm.
>
> Again why? I think the main goal should be to not mess up the normal
> code.
>
> #define virt_to_phys pkvm_virt_to_phys
>
> Does that, we should be leaning into this pattern I think, not adding
> unnecessary churn...
>
> If anything is needed then it should be an iommu_pages function to
> wrapper virt_to_phys() for use by iommu_pages uses but I'd rather
> not..
>
Sure, no strong opinion, I did post this patch along with cleanups
separately in:
https://lore.kernel.org/linux-iommu/20260513215203.3852661-1-smostafa@google.com/
Thanks,
Mostafa
> Jason
next prev parent reply other threads:[~2026-05-13 21:55 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-01 11:19 [PATCH v6 00/25] KVM: arm64: SMMUv3 driver for pKVM (trap and emulate) Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 01/25] KVM: arm64: Generalize trace clock Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 02/25] KVM: arm64: Donate MMIO to the hypervisor Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 03/25] iommu/arm-smmu-v3: Split code with hyp Mostafa Saleh
2026-05-01 12:44 ` Jason Gunthorpe
2026-05-04 12:13 ` Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 04/25] iommu/arm-smmu-v3: Move TLB range invalidation into common code Mostafa Saleh
2026-05-01 12:41 ` Jason Gunthorpe
2026-05-04 12:15 ` Mostafa Saleh
2026-05-05 16:17 ` Jason Gunthorpe
2026-05-05 16:43 ` Mostafa Saleh
2026-05-06 9:53 ` Jason Gunthorpe
2026-05-07 9:40 ` Mostafa Saleh
2026-05-09 23:29 ` Jason Gunthorpe
2026-05-11 11:45 ` Mostafa Saleh
2026-05-11 14:24 ` Jason Gunthorpe
2026-05-01 11:19 ` [PATCH v6 05/25] iommu/arm-smmu-v3: Move IDR parsing to common functions Mostafa Saleh
2026-05-01 12:47 ` Jason Gunthorpe
2026-05-04 12:16 ` Mostafa Saleh
2026-05-05 16:27 ` Jason Gunthorpe
2026-05-05 16:48 ` Mostafa Saleh
2026-05-06 9:56 ` Jason Gunthorpe
2026-05-07 10:13 ` Mostafa Saleh
2026-05-09 23:34 ` Jason Gunthorpe
2026-05-11 11:53 ` Mostafa Saleh
2026-05-11 14:30 ` Jason Gunthorpe
2026-05-01 11:19 ` [PATCH v6 06/25] iommu/io-pgtable-arm: Rework to use the iommu-pages API Mostafa Saleh
2026-05-01 12:24 ` Jason Gunthorpe
2026-05-04 12:19 ` Mostafa Saleh
2026-05-09 23:21 ` Jason Gunthorpe
2026-05-11 11:16 ` Mostafa Saleh
2026-05-11 14:18 ` Jason Gunthorpe
2026-05-13 21:54 ` Mostafa Saleh [this message]
2026-05-01 11:19 ` [PATCH v6 07/25] KVM: arm64: iommu: Introduce IOMMU driver infrastructure Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 08/25] KVM: arm64: iommu: Shadow host stage-2 page table Mostafa Saleh
2026-05-01 13:00 ` Jason Gunthorpe
2026-05-04 12:28 ` Mostafa Saleh
2026-05-09 23:27 ` Jason Gunthorpe
2026-05-11 11:24 ` Mostafa Saleh
2026-05-11 14:22 ` Jason Gunthorpe
2026-05-12 10:42 ` Mostafa Saleh
2026-05-12 12:36 ` Jason Gunthorpe
2026-05-01 11:19 ` [PATCH v6 09/25] KVM: arm64: iommu: Add memory pool Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 10/25] KVM: arm64: iommu: Support DABT for IOMMU Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 11/25] iommu/arm-smmu-v3-kvm: Add SMMUv3 driver Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 12/25] iommu/arm-smmu-v3-kvm: Add the kernel driver Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 13/25] iommu/arm-smmu-v3-kvm: Probe SMMU HW Mostafa Saleh
2026-05-01 12:51 ` Jason Gunthorpe
2026-05-04 12:30 ` Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 14/25] iommu/arm-smmu-v3-kvm: Add MMIO emulation Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 15/25] iommu/arm-smmu-v3-kvm: Shadow the command queue Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 16/25] iommu/arm-smmu-v3-kvm: Add CMDQ functions Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 17/25] iommu/arm-smmu-v3-kvm: Emulate CMDQ for host Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 18/25] iommu/arm-smmu-v3-kvm: Shadow stream table Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 19/25] iommu/arm-smmu-v3-kvm: Shadow STEs Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 20/25] iommu/arm-smmu-v3-kvm: Share other queues Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 21/25] iommu/arm-smmu-v3-kvm: Emulate GBPA Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 22/25] iommu/io-pgtable-arm: Support io-pgtable-arm in the hypervisor Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 23/25] iommu/arm-smmu-v3-kvm: Shadow the CPU stage-2 page table Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 24/25] iommu/arm-smmu-v3-kvm: Enable nesting Mostafa Saleh
2026-05-01 11:19 ` [PATCH v6 25/25] KVM: arm64: Add documentation for pKVM DMA isolation Mostafa Saleh
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