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, praan@google.com,
danielmentz@google.com, mark.rutland@arm.com, qperret@google.com,
tabba@google.com
Subject: Re: [PATCH v5 05/27] iommu/arm-smmu-v3: Split code with hyp
Date: Fri, 12 Dec 2025 15:41:33 +0000 [thread overview]
Message-ID: <aTw3rS1Pp-Iqq7yU@google.com> (raw)
In-Reply-To: <20251128164655.GB812105@ziepe.ca>
On Fri, Nov 28, 2025 at 12:46:55PM -0400, Jason Gunthorpe wrote:
> On Mon, Nov 17, 2025 at 06:47:52PM +0000, Mostafa Saleh wrote:
> > The KVM SMMUv3 driver would re-use some of the cmdq code inside
> > the hypervisor, move these functions to a new common c file that
> > is shared between the host kernel and the hypervisor.
> >
> > Signed-off-by: Mostafa Saleh <smostafa@google.com>
> > ---
> > drivers/iommu/arm/arm-smmu-v3/Makefile | 2 +-
> > .../arm/arm-smmu-v3/arm-smmu-v3-common-lib.c | 114 +++++++++++++
> > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 161 ------------------
> > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 61 +++++++
>
> I would think these inlines should go in some -common.h instead of
> arm-smmu-v3.h for better clarity, and ideally pkvm stuff does not
> include arm-smmu-v3.h at all?
My thought was that we use “arm-smmu-v3.h” to avoid moving a lot of
code and messing up the git history, but I have no strong opinion,
splitting is fine also.
Thanks,
Mostafa
>
> Jason
next prev parent reply other threads:[~2025-12-12 15:41 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-17 18:47 [PATCH v5 00/27] KVM: arm64: SMMUv3 driver for pKVM (trap and emulate) Mostafa Saleh
2025-11-17 18:47 ` [PATCH v5 01/27] KVM: arm64: Add a new function to donate memory with prot Mostafa Saleh
2025-11-17 18:47 ` [PATCH v5 02/27] KVM: arm64: Donate MMIO to the hypervisor Mostafa Saleh
2025-11-17 18:47 ` [PATCH v5 03/27] KVM: arm64: pkvm: Add pkvm_time_get() Mostafa Saleh
2025-11-17 18:47 ` [PATCH v5 04/27] iommu/io-pgtable-arm: Factor kernel specific code out Mostafa Saleh
2025-11-28 16:45 ` Jason Gunthorpe
2025-12-12 15:37 ` Mostafa Saleh
2025-12-16 0:58 ` Jason Gunthorpe
2025-12-16 23:08 ` Mostafa Saleh
2025-11-17 18:47 ` [PATCH v5 05/27] iommu/arm-smmu-v3: Split code with hyp Mostafa Saleh
2025-11-28 16:46 ` Jason Gunthorpe
2025-12-12 15:41 ` Mostafa Saleh [this message]
2025-11-17 18:47 ` [PATCH v5 06/27] iommu/arm-smmu-v3: Move TLB range invalidation into common code Mostafa Saleh
2025-11-17 18:47 ` [PATCH v5 07/27] iommu/arm-smmu-v3: Move IDR parsing to common functions Mostafa Saleh
2025-11-28 16:48 ` Jason Gunthorpe
2025-12-12 15:42 ` Mostafa Saleh
2025-12-17 13:59 ` Jason Gunthorpe
2025-11-17 18:47 ` [PATCH v5 08/27] KVM: arm64: iommu: Introduce IOMMU driver infrastructure Mostafa Saleh
2025-11-17 18:47 ` [PATCH v5 09/27] KVM: arm64: iommu: Shadow host stage-2 page table Mostafa Saleh
2025-11-17 18:47 ` [PATCH v5 10/27] KVM: arm64: iommu: Add memory pool Mostafa Saleh
2025-11-17 18:47 ` [PATCH v5 11/27] KVM: arm64: iommu: Support DABT for IOMMU Mostafa Saleh
2025-11-17 18:47 ` [PATCH v5 12/27] iommu/arm-smmu-v3-kvm: Add SMMUv3 driver Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 13/27] iommu/arm-smmu-v3-kvm: Add the kernel driver Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 14/27] iommu/arm-smmu-v3: Support probing KVM emulated devices Mostafa Saleh
2025-11-28 16:56 ` Jason Gunthorpe
2025-12-12 15:53 ` Mostafa Saleh
2025-12-17 14:00 ` Jason Gunthorpe
2025-11-17 18:48 ` [PATCH v5 15/27] iommu/arm-smmu-v3-kvm: Create array for hyp SMMUv3 Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 16/27] iommu/arm-smmu-v3-kvm: Take over SMMUs Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 17/27] iommu/arm-smmu-v3-kvm: Probe SMMU HW Mostafa Saleh
2025-11-28 17:07 ` Jason Gunthorpe
2025-12-12 16:07 ` Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 18/27] iommu/arm-smmu-v3-kvm: Add MMIO emulation Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 19/27] iommu/arm-smmu-v3-kvm: Shadow the command queue Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 20/27] iommu/arm-smmu-v3-kvm: Add CMDQ functions Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 21/27] iommu/arm-smmu-v3-kvm: Emulate CMDQ for host Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 22/27] iommu/arm-smmu-v3-kvm: Shadow stream table Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 23/27] iommu/arm-smmu-v3-kvm: Shadow STEs Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 24/27] iommu/arm-smmu-v3-kvm: Emulate GBPA Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 25/27] iommu/arm-smmu-v3-kvm: Support io-pgtable Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 26/27] iommu/arm-smmu-v3-kvm: Shadow the CPU stage-2 page table Mostafa Saleh
2025-11-17 18:48 ` [PATCH v5 27/27] iommu/arm-smmu-v3-kvm: Enable nesting Mostafa Saleh
2025-11-28 17:12 ` Jason Gunthorpe
2025-12-12 16:15 ` Mostafa Saleh
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