From: Jacob Pan <jacob.jun.pan@linux.intel.com>
To: LKML <linux-kernel@vger.kernel.org>,
iommu@lists.linux.dev, "Robin Murphy" <robin.murphy@arm.com>,
Jason Gunthorpe <jgg@nvidia.com>,
"Lu Baolu" <baolu.lu@linux.intel.com>,
Joerg Roedel <joro@8bytes.org>,
dmaengine@vger.kernel.org, vkoul@kernel.org
Cc: "Will Deacon" <will@kernel.org>,
David Woodhouse <dwmw2@infradead.org>,
Raj Ashok <ashok.raj@intel.com>,
"Tian, Kevin" <kevin.tian@intel.com>, Yi Liu <yi.l.liu@intel.com>,
"Yu, Fenghua" <fenghua.yu@intel.com>,
Dave Jiang <dave.jiang@intel.com>,
Tony Luck <tony.luck@intel.com>,
"Zanussi, Tom" <tom.zanussi@intel.com>,
narayan.ranganathan@intel.com,
Jacob Pan <jacob.jun.pan@linux.intel.com>
Subject: [PATCH v5 2/7] iommu/sva: Explicitly exclude RID_PASID from SVA
Date: Thu, 27 Apr 2023 10:49:32 -0700 [thread overview]
Message-ID: <20230427174937.471668-3-jacob.jun.pan@linux.intel.com> (raw)
In-Reply-To: <20230427174937.471668-1-jacob.jun.pan@linux.intel.com>
SVA PASID allocation is hardcoded to start from 1 because 0 is used for
RID_PASID, let's make it explicit to avoid the potential conflicts.
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
---
drivers/iommu/iommu-sva.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/iommu-sva.c b/drivers/iommu/iommu-sva.c
index c434b95dc8eb..ac7c93bacb5c 100644
--- a/drivers/iommu/iommu-sva.c
+++ b/drivers/iommu/iommu-sva.c
@@ -66,7 +66,7 @@ struct iommu_sva *iommu_sva_bind_device(struct device *dev, struct mm_struct *mm
return ERR_PTR(-EOPNOTSUPP);
/* Allocate mm->pasid if necessary. */
- ret = iommu_sva_alloc_pasid(mm, 1, max_pasids - 1);
+ ret = iommu_sva_alloc_pasid(mm, IOMMU_DEF_RID_PASID + 1, max_pasids - 1);
if (ret)
return ERR_PTR(ret);
--
2.25.1
next prev parent reply other threads:[~2023-04-27 17:45 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-27 17:49 [PATCH v5 0/7] Re-enable IDXD kernel workqueue under DMA API Jacob Pan
2023-04-27 17:49 ` [PATCH v5 1/7] iommu: Generalize default PCIe requester ID PASID Jacob Pan
2023-04-28 9:38 ` Tian, Kevin
2023-04-28 15:56 ` Jacob Pan
2023-05-05 8:28 ` Tian, Kevin
2023-05-09 20:39 ` Jacob Pan
2023-04-27 17:49 ` Jacob Pan [this message]
2023-04-28 9:40 ` [PATCH v5 2/7] iommu/sva: Explicitly exclude RID_PASID from SVA Tian, Kevin
2023-04-28 15:56 ` Jacob Pan
2023-04-27 17:49 ` [PATCH v5 3/7] iommu: Move global PASID allocation from SVA to core Jacob Pan
2023-04-28 9:46 ` Tian, Kevin
2023-04-28 16:40 ` Jacob Pan
2023-05-03 6:32 ` Baolu Lu
2023-05-04 21:26 ` Jacob Pan
2023-04-27 17:49 ` [PATCH v5 4/7] iommu/vt-d: Factoring out PASID set up helper function Jacob Pan
2023-04-28 9:47 ` Tian, Kevin
2023-05-03 6:37 ` Baolu Lu
2023-05-04 21:39 ` Jacob Pan
2023-05-04 21:27 ` Jacob Pan
2023-04-27 17:49 ` [PATCH v5 5/7] iommu/vt-d: Prepare PASID attachment beyond RID_PASID Jacob Pan
2023-05-03 6:49 ` Baolu Lu
2023-05-04 21:53 ` Jacob Pan
2023-04-27 17:49 ` [PATCH v5 6/7] iommu/vt-d: Implement set_dev_pasid domain op Jacob Pan
2023-05-03 7:26 ` Baolu Lu
2023-05-04 23:03 ` Jacob Pan
2023-05-05 2:58 ` Baolu Lu
2023-05-05 20:32 ` Jacob Pan
2023-04-27 17:49 ` [PATCH v5 7/7] dmaengine/idxd: Re-enable kernel workqueue under DMA API Jacob Pan
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