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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230427174937.471668-3-jacob.jun.pan@linux.intel.com \
--to=jacob.jun.pan@linux.intel.com \
--cc=ashok.raj@intel.com \
--cc=baolu.lu@linux.intel.com \
--cc=dave.jiang@intel.com \
--cc=dmaengine@vger.kernel.org \
--cc=dwmw2@infradead.org \
--cc=fenghua.yu@intel.com \
--cc=iommu@lists.linux.dev \
--cc=jgg@nvidia.com \
--cc=joro@8bytes.org \
--cc=kevin.tian@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=narayan.ranganathan@intel.com \
--cc=robin.murphy@arm.com \
--cc=tom.zanussi@intel.com \
--cc=tony.luck@intel.com \
--cc=vkoul@kernel.org \
--cc=will@kernel.org \
--cc=yi.l.liu@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.