From: Lu Baolu <baolu.lu@linux.intel.com>
To: Jason Gunthorpe <jgg@ziepe.ca>, Kevin Tian <kevin.tian@intel.com>,
Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Nicolin Chen <nicolinc@nvidia.com>, Yi Liu <yi.l.liu@intel.com>,
Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: iommu@lists.linux.dev, linux-kselftest@vger.kernel.org,
virtualization@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, Lu Baolu <baolu.lu@linux.intel.com>
Subject: [RFC PATCHES 15/17] iommufd: Allow new hwpt_alloc flags
Date: Tue, 30 May 2023 13:37:22 +0800 [thread overview]
Message-ID: <20230530053724.232765-16-baolu.lu@linux.intel.com> (raw)
In-Reply-To: <20230530053724.232765-1-baolu.lu@linux.intel.com>
We have completed all puzzles for IO page fault delivery so far. We can
allow user space to opt-in the flags of IOMMU_HWPT_ALLOC_FLAGS_IOPF and
IOMMU_HWPT_ALLOC_FLAGS_USER_PASID_TABLE now.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
---
include/uapi/linux/iommufd.h | 3 +++
drivers/iommu/iommufd/hw_pagetable.c | 2 +-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/iommufd.h b/include/uapi/linux/iommufd.h
index 65bb856dd8fb..908d12219727 100644
--- a/include/uapi/linux/iommufd.h
+++ b/include/uapi/linux/iommufd.h
@@ -491,6 +491,9 @@ struct iommu_hwpt_alloc {
__u32 flags;
#define IOMMU_HWPT_ALLOC_FLAGS_IOPF_CAPABLE (1 << 0)
#define IOMMU_HWPT_ALLOC_FLAGS_USER_PASID_TABLE (1 << 1)
+#define IOMMU_HWPT_ALLOC_FLAGS_ALL \
+ (IOMMU_HWPT_ALLOC_FLAGS_IOPF_CAPABLE | \
+ IOMMU_HWPT_ALLOC_FLAGS_USER_PASID_TABLE)
__u32 dev_id;
__u32 pt_id;
__u32 out_hwpt_id;
diff --git a/drivers/iommu/iommufd/hw_pagetable.c b/drivers/iommu/iommufd/hw_pagetable.c
index 7f18e6bd76ec..7be6bf26290f 100644
--- a/drivers/iommu/iommufd/hw_pagetable.c
+++ b/drivers/iommu/iommufd/hw_pagetable.c
@@ -208,7 +208,7 @@ int iommufd_hwpt_alloc(struct iommufd_ucmd *ucmd)
int klen = 0;
int rc = 0;
- if (cmd->flags || cmd->__reserved)
+ if ((cmd->flags & ~IOMMU_HWPT_ALLOC_FLAGS_ALL) || cmd->__reserved)
return -EOPNOTSUPP;
idev = iommufd_get_device(ucmd, cmd->dev_id);
--
2.34.1
next prev parent reply other threads:[~2023-05-30 5:39 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-30 5:37 [RFC PATCHES 00/17] IOMMUFD: Deliver IO page faults to user space Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 01/17] iommu: Move iommu fault data to linux/iommu.h Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 02/17] iommu: Support asynchronous I/O page fault response Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 03/17] iommu: Add helper to set iopf handler for domain Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 04/17] iommu: Pass device parameter to iopf handler Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 05/17] iommu: Split IO page fault handling from SVA Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 06/17] iommu: Add iommu page fault cookie helpers Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 07/17] iommufd: Add iommu page fault data Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 08/17] iommufd: IO page fault delivery initialization and release Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 09/17] iommufd: Add iommufd hwpt iopf handler Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 10/17] iommufd: Add IOMMU_HWPT_ALLOC_FLAGS_USER_PASID_TABLE for hwpt_alloc Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 11/17] iommufd: Deliver fault messages to user space Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 12/17] iommufd: Add io page fault response support Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 13/17] iommufd: Add a timer for each iommufd fault data Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 14/17] iommufd: Drain all pending faults when destroying hwpt Lu Baolu
2023-05-30 5:37 ` Lu Baolu [this message]
2023-05-30 5:37 ` [RFC PATCHES 16/17] iommufd/selftest: Add IOPF feature for mock devices Lu Baolu
2023-05-30 5:37 ` [RFC PATCHES 17/17] iommufd/selftest: Cover iopf-capable nested hwpt Lu Baolu
2023-05-30 18:50 ` [RFC PATCHES 00/17] IOMMUFD: Deliver IO page faults to user space Nicolin Chen
2023-05-31 2:10 ` Baolu Lu
2023-05-31 4:12 ` Nicolin Chen
2023-06-25 6:30 ` Baolu Lu
2023-06-25 19:21 ` Nicolin Chen
2023-06-26 3:10 ` Baolu Lu
2023-06-26 18:02 ` Nicolin Chen
2023-06-26 18:33 ` Jason Gunthorpe
2023-06-28 2:00 ` Baolu Lu
2023-06-28 12:49 ` Jason Gunthorpe
2023-06-29 1:07 ` Baolu Lu
2023-05-31 0:33 ` Jason Gunthorpe
2023-05-31 3:17 ` Baolu Lu
2023-06-23 6:18 ` Baolu Lu
2023-06-23 13:50 ` Jason Gunthorpe
2023-06-16 11:32 ` Jean-Philippe Brucker
2023-06-19 3:35 ` Baolu Lu
2023-06-26 9:51 ` Jean-Philippe Brucker
2023-06-19 12:58 ` Jason Gunthorpe
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