From: Nicolin Chen <nicolinc@nvidia.com>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
"Liu, Yi L" <yi.l.liu@intel.com>,
"joro@8bytes.org" <joro@8bytes.org>,
"alex.williamson@redhat.com" <alex.williamson@redhat.com>,
"robin.murphy@arm.com" <robin.murphy@arm.com>,
"baolu.lu@linux.intel.com" <baolu.lu@linux.intel.com>,
"cohuck@redhat.com" <cohuck@redhat.com>,
"eric.auger@redhat.com" <eric.auger@redhat.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"mjrosato@linux.ibm.com" <mjrosato@linux.ibm.com>,
"chao.p.peng@linux.intel.com" <chao.p.peng@linux.intel.com>,
"yi.y.sun@linux.intel.com" <yi.y.sun@linux.intel.com>,
"peterx@redhat.com" <peterx@redhat.com>,
"jasowang@redhat.com" <jasowang@redhat.com>,
"shameerali.kolothum.thodi@huawei.com"
<shameerali.kolothum.thodi@huawei.com>,
"lulu@redhat.com" <lulu@redhat.com>,
"suravee.suthikulpanit@amd.com" <suravee.suthikulpanit@amd.com>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
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<linux-kselftest@vger.kernel.org>,
"Duan, Zhenzhong" <zhenzhong.duan@intel.com>,
"joao.m.martins@oracle.com" <joao.m.martins@oracle.com>,
"Zeng, Xin" <xin.zeng@intel.com>,
"Zhao, Yan Y" <yan.y.zhao@intel.com>
Subject: Re: [PATCH v6 2/6] iommufd: Add IOMMU_HWPT_INVALIDATE
Date: Tue, 5 Dec 2023 09:33:30 -0800 [thread overview]
Message-ID: <ZW9e6hxyDmkK8bfe@Asurada-Nvidia> (raw)
In-Reply-To: <20231204144850.GC1493156@nvidia.com>
On Mon, Dec 04, 2023 at 10:48:50AM -0400, Jason Gunthorpe wrote:
> > Or am I missing some point here?
>
> It sounds Ok, we just have to understand what userspace should be
> doing and how much of this the kernel should implement.
>
> It seems to me that the error code should return the gerror and the
> req_num should indicate the halted cons. The vmm should relay both
> into the virtual registers.
I see your concern. I will take a closer look and see if we can
add to the initial version of arm_smmu_cache_invalidate_user().
Otherwise, we can add later.
Btw, VT-d seems to want the error_code and reports in the VT-d
specific invalidate entry structure, as Kevin and Yi had that
discussion in the other side of the thread.
Thanks
Nicolin
next prev parent reply other threads:[~2023-12-05 17:33 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20231217215720eucas1p2a590aca62ce8eb5ba81df6bc8b1a785d@eucas1p2.samsung.com>
2023-11-17 13:07 ` [PATCH v6 0/6] iommufd: Add nesting infrastructure (part 2/2) Yi Liu
2023-11-17 13:07 ` [PATCH v6 1/6] iommu: Add cache_invalidate_user op Yi Liu
2023-11-20 7:53 ` Tian, Kevin
2023-12-06 18:32 ` Jason Gunthorpe
2023-12-06 18:43 ` Nicolin Chen
2023-12-06 18:50 ` Jason Gunthorpe
2023-12-07 6:53 ` Yi Liu
2024-01-08 7:32 ` Binbin Wu
2023-11-17 13:07 ` [PATCH v6 2/6] iommufd: Add IOMMU_HWPT_INVALIDATE Yi Liu
2023-11-20 8:09 ` Tian, Kevin
2023-11-20 8:29 ` Yi Liu
2023-11-20 8:34 ` Tian, Kevin
2023-11-20 17:36 ` Nicolin Chen
2023-11-21 2:50 ` Tian, Kevin
2023-11-21 5:24 ` Nicolin Chen
2023-11-24 2:36 ` Tian, Kevin
2023-11-27 19:53 ` Nicolin Chen
2023-11-28 6:01 ` Yi Liu
2023-11-29 0:54 ` Nicolin Chen
2023-11-28 8:03 ` Tian, Kevin
2023-11-29 0:51 ` Nicolin Chen
2023-11-29 0:57 ` Jason Gunthorpe
2023-11-29 1:09 ` Nicolin Chen
2023-11-29 19:58 ` Jason Gunthorpe
2023-11-29 22:07 ` Nicolin Chen
2023-11-30 0:08 ` Jason Gunthorpe
2023-11-30 20:41 ` Nicolin Chen
2023-12-01 0:45 ` Jason Gunthorpe
2023-12-01 4:29 ` Nicolin Chen
2023-12-01 12:55 ` Jason Gunthorpe
2023-12-01 19:58 ` Nicolin Chen
2023-12-01 20:43 ` Jason Gunthorpe
2023-12-01 22:12 ` Nicolin Chen
2023-12-04 14:48 ` Jason Gunthorpe
2023-12-05 17:33 ` Nicolin Chen [this message]
2023-12-06 12:48 ` Jason Gunthorpe
2023-12-01 3:51 ` Yi Liu
2023-12-01 4:50 ` Nicolin Chen
2023-12-01 5:19 ` Tian, Kevin
2023-12-01 7:05 ` Yi Liu
2023-12-01 7:10 ` Tian, Kevin
2023-12-01 9:08 ` Yi Liu
2023-11-21 5:02 ` Baolu Lu
2023-11-21 5:19 ` Nicolin Chen
2023-11-28 5:54 ` Yi Liu
2023-12-06 18:33 ` Jason Gunthorpe
2023-12-07 6:59 ` Yi Liu
2023-12-07 9:04 ` Tian, Kevin
2023-12-07 14:42 ` Jason Gunthorpe
2023-12-11 7:53 ` Yi Liu
2023-12-11 13:21 ` Jason Gunthorpe
2023-12-12 13:45 ` Liu, Yi L
2023-12-12 14:40 ` Jason Gunthorpe
2023-12-13 13:47 ` Liu, Yi L
2023-12-13 14:11 ` Jason Gunthorpe
2023-12-11 7:49 ` Yi Liu
2023-11-17 13:07 ` [PATCH v6 3/6] iommu: Add iommu_copy_struct_from_user_array helper Yi Liu
2023-11-20 8:17 ` Tian, Kevin
2023-11-20 17:25 ` Nicolin Chen
2023-11-21 2:48 ` Tian, Kevin
2024-01-08 8:37 ` Binbin Wu
2023-11-17 13:07 ` [PATCH v6 4/6] iommufd/selftest: Add mock_domain_cache_invalidate_user support Yi Liu
2023-12-06 18:16 ` Jason Gunthorpe
2023-12-11 11:21 ` Yi Liu
2023-11-17 13:07 ` [PATCH v6 5/6] iommufd/selftest: Add IOMMU_TEST_OP_MD_CHECK_IOTLB test op Yi Liu
2023-11-17 13:07 ` [PATCH v6 6/6] iommufd/selftest: Add coverage for IOMMU_HWPT_INVALIDATE ioctl Yi Liu
2023-12-06 18:19 ` Jason Gunthorpe
2023-12-11 11:28 ` Yi Liu
2023-12-11 13:06 ` Jason Gunthorpe
2023-12-09 1:47 ` [PATCH v6 0/6] iommufd: Add nesting infrastructure (part 2/2) Jason Gunthorpe
2023-12-11 2:29 ` Tian, Kevin
2023-12-11 12:36 ` Yi Liu
2023-12-11 13:05 ` Jason Gunthorpe
2023-12-11 15:34 ` Suthikulpanit, Suravee
2023-12-11 16:06 ` Jason Gunthorpe
2023-12-11 12:35 ` Yi Liu
2023-12-11 13:20 ` Jason Gunthorpe
2023-12-11 20:11 ` Nicolin Chen
2023-12-11 21:48 ` Jason Gunthorpe
2023-12-11 17:35 ` Suthikulpanit, Suravee
2023-12-11 17:45 ` Jason Gunthorpe
2023-12-11 21:27 ` Nicolin Chen
2023-12-11 21:57 ` Jason Gunthorpe
2023-12-12 7:30 ` Nicolin Chen
2023-12-12 14:44 ` Jason Gunthorpe
2023-12-12 19:13 ` Nicolin Chen
2023-12-12 19:21 ` Jason Gunthorpe
2023-12-12 20:05 ` Nicolin Chen
2023-12-13 12:40 ` Jason Gunthorpe
2023-12-13 19:54 ` Nicolin Chen
2023-12-17 11:21 ` Joel Granados
2023-12-19 9:26 ` Yi Liu
2023-12-20 11:23 ` Joel Granados
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