From: Jason Gunthorpe <jgg@nvidia.com>
To: Nicolin Chen <nicolinc@nvidia.com>
Cc: will@kernel.org, kevin.tian@intel.com, corbet@lwn.net,
oe-kbuild-all@lists.linux.dev, joro@8bytes.org,
suravee.suthikulpanit@amd.com, robin.murphy@arm.com,
dwmw2@infradead.org, baolu.lu@linux.intel.com, shuah@kernel.org,
linux-kernel@vger.kernel.org, iommu@lists.linux.dev,
linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org, linux-doc@vger.kernel.org,
eric.auger@redhat.com, jean-philippe@linaro.org, mdf@kernel.org,
mshavit@google.com, shameerali.kolothum.thodi@huawei.com,
smostafa@google.com, ddutile@redhat.com, yi.l.liu@intel.com,
patches@lists.linux.dev
Subject: Re: [PATCH v5 14/14] iommu/arm-smmu-v3: Report events that belong to devices attached to vIOMMU
Date: Mon, 13 Jan 2025 15:18:17 -0400 [thread overview]
Message-ID: <20250113191817.GA540878@nvidia.com> (raw)
In-Reply-To: <Z4VmST8xyAluL858@Asurada-Nvidia>
On Mon, Jan 13, 2025 at 11:15:21AM -0800, Nicolin Chen wrote:
> On Mon, Jan 13, 2025 at 03:06:41PM -0400, Jason Gunthorpe wrote:
> > On Mon, Jan 13, 2025 at 11:01:10AM -0800, Nicolin Chen wrote:
> >
> > > +/* This is basically iommu_vevent_arm_smmuv3 in u64 for conversion */
> > > +struct arm_vsmmu_evt {
> > > + union {
> > > + u64 evt[EVTQ_ENT_DWORDS];
> > > + struct iommu_vevent_arm_smmuv3 uevt;
> > > + };
> > > +};
> >
> > This doesn't seem right, don't make unions like this
>
> This is copied from the invalidate union though... Any reason why
> this is no longer good for evt v.s. cmd?
In that case it was trying to be really optimal and copy in place,
here we don't care so much..
Jason
prev parent reply other threads:[~2025-01-13 19:19 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-07 17:10 [PATCH v5 00/14] iommufd: Add vIOMMU infrastructure (Part-3: vEVENTQ) Nicolin Chen
2025-01-07 17:10 ` [PATCH v5 01/14] iommufd: Keep OBJ/IOCTL lists in an alphabetical order Nicolin Chen
2025-01-10 6:26 ` Tian, Kevin
2025-01-10 17:25 ` Jason Gunthorpe
2025-01-14 19:29 ` Jason Gunthorpe
2025-01-07 17:10 ` [PATCH v5 02/14] iommufd/fault: Add an iommufd_fault_init() helper Nicolin Chen
2025-01-10 17:25 ` Jason Gunthorpe
2025-01-07 17:10 ` [PATCH v5 03/14] iommufd/fault: Move iommufd_fault_iopf_handler() to header Nicolin Chen
2025-01-10 17:25 ` Jason Gunthorpe
2025-01-07 17:10 ` [PATCH v5 04/14] iommufd: Abstract an iommufd_eventq from iommufd_fault Nicolin Chen
2025-01-10 6:26 ` Tian, Kevin
2025-01-10 17:26 ` Jason Gunthorpe
2025-01-10 20:49 ` Nicolin Chen
2025-01-07 17:10 ` [PATCH v5 05/14] iommufd: Rename fault.c to eventq.c Nicolin Chen
2025-01-10 17:27 ` Jason Gunthorpe
2025-01-07 17:10 ` [PATCH v5 06/14] iommufd: Add IOMMUFD_OBJ_VEVENTQ and IOMMUFD_CMD_VEVENTQ_ALLOC Nicolin Chen
2025-01-10 7:06 ` Tian, Kevin
2025-01-10 21:29 ` Nicolin Chen
2025-01-13 2:52 ` Tian, Kevin
2025-01-13 4:51 ` Nicolin Chen
2025-01-13 8:17 ` Tian, Kevin
2025-01-13 19:10 ` Jason Gunthorpe
2025-01-10 17:48 ` Jason Gunthorpe
2025-01-10 19:27 ` Nicolin Chen
2025-01-10 19:49 ` Jason Gunthorpe
2025-01-10 21:58 ` Nicolin Chen
2025-01-13 19:12 ` Jason Gunthorpe
2025-01-13 19:18 ` Nicolin Chen
2025-01-07 17:10 ` [PATCH v5 07/14] iommufd/viommu: Add iommufd_viommu_get_vdev_id helper Nicolin Chen
2025-01-10 7:07 ` Tian, Kevin
2025-01-10 21:35 ` Nicolin Chen
2025-01-07 17:10 ` [PATCH v5 08/14] iommufd/viommu: Add iommufd_viommu_report_event helper Nicolin Chen
2025-01-10 7:12 ` Tian, Kevin
2025-01-10 14:51 ` Jason Gunthorpe
2025-01-10 18:40 ` Nicolin Chen
2025-01-10 17:41 ` Jason Gunthorpe
2025-01-10 18:38 ` Nicolin Chen
2025-01-10 19:51 ` Jason Gunthorpe
2025-01-10 19:56 ` Nicolin Chen
2025-01-13 5:37 ` Nicolin Chen
2025-01-13 19:21 ` Jason Gunthorpe
2025-01-13 19:47 ` Nicolin Chen
2025-01-13 19:54 ` Jason Gunthorpe
2025-01-13 20:44 ` Nicolin Chen
2025-01-14 13:41 ` Jason Gunthorpe
2025-01-17 22:11 ` Nicolin Chen
2025-01-20 18:18 ` Jason Gunthorpe
2025-01-20 20:52 ` Nicolin Chen
2025-01-21 18:36 ` Jason Gunthorpe
2025-01-21 19:55 ` Nicolin Chen
2025-01-21 20:09 ` Jason Gunthorpe
2025-01-21 21:02 ` Nicolin Chen
2025-01-21 21:14 ` Jason Gunthorpe
2025-01-21 21:40 ` Nicolin Chen
2025-01-22 0:21 ` Jason Gunthorpe
2025-01-22 7:15 ` Nicolin Chen
2025-01-22 9:33 ` Tian, Kevin
2025-01-22 19:54 ` Nicolin Chen
2025-01-23 13:42 ` Jason Gunthorpe
2025-01-22 8:05 ` Nicolin Chen
2025-01-22 18:02 ` Nicolin Chen
2025-01-23 7:02 ` Nicolin Chen
2025-01-23 13:43 ` Jason Gunthorpe
2025-01-07 17:10 ` [PATCH v5 09/14] iommufd/selftest: Require vdev_id when attaching to a nested domain Nicolin Chen
2025-01-07 17:10 ` [PATCH v5 10/14] iommufd/selftest: Add IOMMU_TEST_OP_TRIGGER_VEVENT for vEVENTQ coverage Nicolin Chen
2025-01-07 17:10 ` [PATCH v5 11/14] iommufd/selftest: Add IOMMU_VEVENTQ_ALLOC test coverage Nicolin Chen
2025-01-07 17:10 ` [PATCH v5 12/14] Documentation: userspace-api: iommufd: Update FAULT and VEVENTQ Nicolin Chen
2025-01-10 7:13 ` Tian, Kevin
2025-01-07 17:10 ` [PATCH v5 13/14] iommu/arm-smmu-v3: Introduce struct arm_smmu_vmaster Nicolin Chen
2025-01-13 19:29 ` Jason Gunthorpe
2025-01-13 19:52 ` Nicolin Chen
2025-01-07 17:10 ` [PATCH v5 14/14] iommu/arm-smmu-v3: Report events that belong to devices attached to vIOMMU Nicolin Chen
2025-01-09 11:04 ` kernel test robot
2025-01-13 19:01 ` Nicolin Chen
2025-01-13 19:06 ` Jason Gunthorpe
2025-01-13 19:15 ` Nicolin Chen
2025-01-13 19:18 ` Jason Gunthorpe [this message]
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