From: Jason Gunthorpe <jgg@nvidia.com>
To: Vasant Hegde <vasant.hegde@amd.com>
Cc: Nicolin Chen <nicolinc@nvidia.com>,
kevin.tian@intel.com, corbet@lwn.net, will@kernel.org,
bagasdotme@gmail.com, robin.murphy@arm.com, joro@8bytes.org,
thierry.reding@gmail.com, vdumpa@nvidia.com,
jonathanh@nvidia.com, shuah@kernel.org, jsnitsel@redhat.com,
nathan@kernel.org, peterz@infradead.org, yi.l.liu@intel.com,
mshavit@google.com, praan@google.com, zhangzekun11@huawei.com,
iommu@lists.linux.dev, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-tegra@vger.kernel.org, linux-kselftest@vger.kernel.org,
patches@lists.linux.dev, mochs@nvidia.com,
alok.a.tiwari@oracle.com,
Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Subject: Re: [PATCH v3 11/23] iommufd/viommu: Add IOMMUFD_CMD_VQUEUE_ALLOC ioctl
Date: Wed, 7 May 2025 09:31:03 -0300 [thread overview]
Message-ID: <20250507123103.GC90261@nvidia.com> (raw)
In-Reply-To: <eb0d3629-8663-45e9-b929-0c6edff31291@amd.com>
On Wed, May 07, 2025 at 01:11:43PM +0530, Vasant Hegde wrote:
> - MMIO Offset 0018h IOMMU Control Register
> EventLogEn: Event log enable
> * When guest sets this bit, qemu will trap and will send queue_alloc
> * When guest disables this bit, qemu will trap and send vqueue_destroy
>
> This part is fine.
Ok
> EventIntEn: Event log interrupt enable
> * When guest sets this bit, qemu will trap
> * this needs to be communicated to Host so that we can program VF Control
> BAR and enable the interrupt
This sounds like modifying the vqueue? Or maybe on the viommu?
> - There is other bit "Completion wait interrupt enable"
> This doesn't related to any buffer. Instead if we configure this for
> completion wait command it will generate interrupt.
This sounds like a modify on the VIOMMU object?
Jason
next prev parent reply other threads:[~2025-05-07 12:31 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-01 23:01 [PATCH v3 00/23] iommufd: Add vIOMMU infrastructure (Part-4 vQUEUE) Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 01/23] iommufd/viommu: Add driver-allocated vDEVICE support Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 02/23] iommu: Pass in a driver-level user data structure to viommu_alloc op Nicolin Chen
2025-05-06 5:43 ` Vasant Hegde
2025-05-01 23:01 ` [PATCH v3 03/23] iommufd/viommu: Allow driver-specific user data for a vIOMMU object Nicolin Chen
2025-05-06 9:32 ` Vasant Hegde
2025-05-01 23:01 ` [PATCH v3 04/23] iommu: Add iommu_copy_struct_to_user helper Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 05/23] iommufd/driver: Let iommufd_viommu_alloc helper save ictx to viommu->ictx Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 06/23] iommufd/driver: Add iommufd_struct_destroy to revert iommufd_viommu_alloc Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 07/23] iommufd/selftest: Support user_data in mock_viommu_alloc Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 08/23] iommufd/selftest: Add covearge for viommu data Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 09/23] iommufd: Abstract iopt_pin_pages and iopt_unpin_pages helpers Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 10/23] iommufd/viommu: Introduce IOMMUFD_OBJ_VQUEUE and its related struct Nicolin Chen
2025-05-06 9:17 ` Vasant Hegde
2025-05-01 23:01 ` [PATCH v3 11/23] iommufd/viommu: Add IOMMUFD_CMD_VQUEUE_ALLOC ioctl Nicolin Chen
2025-05-06 9:15 ` Vasant Hegde
2025-05-06 12:01 ` Jason Gunthorpe
2025-05-07 7:41 ` Vasant Hegde
2025-05-07 8:00 ` Tian, Kevin
2025-05-07 12:31 ` Jason Gunthorpe [this message]
2025-05-08 4:46 ` Vasant Hegde
2025-05-08 5:56 ` Nicolin Chen
2025-05-08 12:14 ` Jason Gunthorpe
2025-05-08 17:12 ` Nicolin Chen
2025-05-09 11:52 ` Vasant Hegde
2025-05-01 23:01 ` [PATCH v3 12/23] iommufd/driver: Add iommufd_vqueue_depend/undepend() helpers Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 13/23] iommufd/selftest: Add coverage for IOMMUFD_CMD_VQUEUE_ALLOC Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 14/23] iommufd: Add mmap interface Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 15/23] iommufd/selftest: Add coverage for the new " Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 16/23] Documentation: userspace-api: iommufd: Update vQUEUE Nicolin Chen
2025-05-02 3:50 ` Bagas Sanjaya
2025-05-02 5:29 ` Nicolin Chen
2025-05-02 7:31 ` Bagas Sanjaya
2025-05-01 23:01 ` [PATCH v3 17/23] iommu/arm-smmu-v3-iommufd: Add vsmmu_alloc impl op Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 18/23] iommu/arm-smmu-v3-iommufd: Support implementation-defined hw_info Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 19/23] iommu/tegra241-cmdqv: Use request_threaded_irq Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 20/23] iommu/tegra241-cmdqv: Simplify deinit flow in tegra241_cmdqv_remove_vintf() Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 21/23] iommu/tegra241-cmdqv: Do not statically map LVCMDQs Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 22/23] iommu/tegra241-cmdqv: Add user-space use support Nicolin Chen
2025-05-01 23:09 ` Nicolin Chen
2025-05-01 23:01 ` [PATCH v3 23/23] iommu/tegra241-cmdqv: Add IOMMU_VEVENTQ_TYPE_TEGRA241_CMDQV support Nicolin Chen
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