From: Mostafa Saleh <smostafa@google.com>
To: Jason Gunthorpe <jgg@ziepe.ca>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
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Subject: Re: [RFC PATCH v2 00/58] KVM: Arm SMMUv3 driver for pKVM
Date: Wed, 29 Jan 2025 14:08:43 +0000 [thread overview]
Message-ID: <Z5o2a-RSiWqQOISc@google.com> (raw)
In-Reply-To: <20250129135053.GB2120662@ziepe.ca>
On Wed, Jan 29, 2025 at 09:50:53AM -0400, Jason Gunthorpe wrote:
> On Wed, Jan 29, 2025 at 12:21:01PM +0000, Mostafa Saleh wrote:
> > levels) and can’t be separated from the kernel as that defeats the
> > point of KVM, that means that all hypercalls have to be stable ABI,
> > same for the shared data, shared structs, types...
>
> Sorry, just trying to understand this sentance, today pkvm has no
> stable ABI right? That is the whole point of building it into the
> kernel?
Yes.
>
> Things like the CC world are creating stable ABIs for their pkvm like
> environments because they are not built into the kernel? And thus they
> take the pain of that?
Yes, my point is, we can't just separate pKVM as Kevin was mentioning as
they has no ABI and it is tightly coupled with the kernel.
Thanks,
Mostafa
>
> Jason
next prev parent reply other threads:[~2025-01-29 14:10 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-12 18:03 [RFC PATCH v2 00/58] KVM: Arm SMMUv3 driver for pKVM Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 01/58] iommu/io-pgtable-arm: Split the page table driver Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 02/58] iommu/io-pgtable-arm: Split initialization Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 03/58] iommu/io-pgtable: Add configure() operation Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 04/58] iommu/arm-smmu-v3: Move some definitions to arm64 include/ Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 05/58] iommu/arm-smmu-v3: Extract driver-specific bits from probe function Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 06/58] iommu/arm-smmu-v3: Move some functions to arm-smmu-v3-common.c Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 07/58] iommu/arm-smmu-v3: Move queue and table allocation " Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 08/58] iommu/arm-smmu-v3: Move firmware probe to arm-smmu-v3-common Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 09/58] iommu/arm-smmu-v3: Move IOMMU registration to arm-smmu-v3-common.c Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 10/58] iommu/arm-smmu-v3: Move common irq code to common file Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 11/58] KVM: arm64: pkvm: Add pkvm_udelay() Mostafa Saleh
2024-12-19 11:14 ` Quentin Perret
2024-12-19 11:21 ` Mostafa Saleh
2024-12-19 11:28 ` Quentin Perret
2024-12-12 18:03 ` [RFC PATCH v2 12/58] KVM: arm64: Add __pkvm_{use, unuse}_dma() Mostafa Saleh
2024-12-19 11:23 ` Quentin Perret
2024-12-12 18:03 ` [RFC PATCH v2 13/58] KVM: arm64: Introduce IOMMU driver infrastructure Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 14/58] KVM: arm64: pkvm: Add IOMMU hypercalls Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 15/58] KVM: arm64: iommu: Add a memory pool for the IOMMU Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 16/58] KVM: arm64: iommu: Add domains Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 17/58] KVM: arm64: iommu: Add {attach, detach}_dev Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 18/58] KVM: arm64: iommu: Add map/unmap() operations Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 19/58] KVM: arm64: iommu: support iommu_iotlb_gather Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 20/58] KVM: arm64: Support power domains Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 21/58] KVM: arm64: pkvm: Add __pkvm_host_add_remove_page() Mostafa Saleh
2024-12-19 11:10 ` Quentin Perret
2024-12-19 11:19 ` Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 22/58] KVM: arm64: pkvm: Support SCMI power domain Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 23/58] KVM: arm64: iommu: Support power management Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 24/58] KVM: arm64: iommu: Support DABT for IOMMU Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 25/58] KVM: arm64: iommu: Add SMMUv3 driver Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 26/58] KVM: arm64: smmu-v3: Initialize registers Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 27/58] KVM: arm64: smmu-v3: Setup command queue Mostafa Saleh
2025-01-23 13:01 ` Robin Murphy
2025-01-29 11:15 ` Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 28/58] KVM: arm64: smmu-v3: Setup stream table Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 29/58] KVM: arm64: smmu-v3: Setup event queue Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 30/58] KVM: arm64: smmu-v3: Reset the device Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 31/58] KVM: arm64: smmu-v3: Support io-pgtable Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 32/58] KVM: arm64: smmu-v3: Add {alloc/free}_domain Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 33/58] KVM: arm64: smmu-v3: Add TLB ops Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 34/58] KVM: arm64: smmu-v3: Add context descriptor functions Mostafa Saleh
2024-12-12 18:03 ` [RFC PATCH v2 35/58] KVM: arm64: smmu-v3: Add attach_dev Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 36/58] KVM: arm64: smmu-v3: Add detach_dev Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 37/58] iommu/io-pgtable: Generalize walker interface Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 38/58] iommu/io-pgtable-arm: Add post table walker callback Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 39/58] drivers/iommu: io-pgtable: Add IO_PGTABLE_QUIRK_UNMAP_INVAL Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 40/58] KVM: arm64: smmu-v3: Add map/unmap pages and iova_to_phys Mostafa Saleh
2024-12-12 19:44 ` Jason Gunthorpe
2024-12-13 19:48 ` Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 41/58] KVM: arm64: smmu-v3: Add DABT handler Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 42/58] iommu/arm-smmu-v3-kvm: Add host driver for pKVM Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 43/58] iommu/arm-smmu-v3-kvm: Pass a list of SMMU devices to the hypervisor Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 44/58] iommu/arm-smmu-v3-kvm: Validate device features Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 45/58] iommu/arm-smmu-v3-kvm: Allocate structures and reset device Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 46/58] KVM: arm64: Add function to topup generic allocator Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 47/58] KVM: arm64: Add macro for SMCCC call with all returns Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 48/58] iommu/arm-smmu-v3-kvm: Add function to topup IOMMU allocator Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 49/58] iommu/arm-smmu-v3-kvm: Add IOMMU ops Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 50/58] iommu/arm-smmu-v3-kvm: Add map, unmap and iova_to_phys operations Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 51/58] iommu/arm-smmu-v3-kvm: Support PASID operations Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 52/58] iommu/arm-smmu-v3-kvm: Add IRQs for the driver Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 53/58] iommu/arm-smmu-v3-kvm: Probe power domains Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 54/58] iommu/arm-smmu-v3-kvm: Enable runtime PM Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 55/58] drivers/iommu: Add deferred map_sg operations Mostafa Saleh
2024-12-19 12:48 ` Robin Murphy
2024-12-19 14:24 ` Mostafa Saleh
2025-01-02 20:18 ` Jason Gunthorpe
2025-01-03 15:35 ` Mostafa Saleh
2025-01-03 15:47 ` Jason Gunthorpe
2025-01-08 12:13 ` Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 56/58] KVM: arm64: iommu: Add hypercall for map_sg Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 57/58] iommu/arm-smmu-v3-kvm: Implement sg operations Mostafa Saleh
2024-12-12 18:04 ` [RFC PATCH v2 58/58] iommu/arm-smmu-v3-kvm: Support command queue batching Mostafa Saleh
2024-12-12 19:41 ` [RFC PATCH v2 00/58] KVM: Arm SMMUv3 driver for pKVM Jason Gunthorpe
2024-12-13 19:39 ` Mostafa Saleh
2025-01-02 20:16 ` Jason Gunthorpe
2025-01-08 12:09 ` Mostafa Saleh
2025-01-16 6:39 ` Tian, Kevin
2025-01-16 19:14 ` Jason Gunthorpe
2025-01-17 6:57 ` Tian, Kevin
2025-01-22 11:04 ` Mostafa Saleh
2025-01-22 16:20 ` Jason Gunthorpe
2025-01-22 17:17 ` Mostafa Saleh
2025-01-22 19:16 ` Jason Gunthorpe
2025-01-23 8:13 ` Tian, Kevin
2025-01-29 12:16 ` Mostafa Saleh
2025-01-16 8:51 ` Tian, Kevin
2025-01-22 11:28 ` Mostafa Saleh
2025-01-23 8:25 ` Tian, Kevin
2025-01-29 12:21 ` Mostafa Saleh
2025-01-29 13:50 ` Jason Gunthorpe
2025-01-29 14:08 ` Mostafa Saleh [this message]
2025-02-18 9:52 ` Tian, Kevin
2025-01-16 19:19 ` Jason Gunthorpe
2025-01-22 11:46 ` Mostafa Saleh
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