From: Jacob Pan <jacob.jun.pan@linux.intel.com>
To: LKML <linux-kernel@vger.kernel.org>,
iommu@lists.linux.dev, Jason Gunthorpe <jgg@nvidia.com>,
"Lu Baolu" <baolu.lu@linux.intel.com>,
Joerg Roedel <joro@8bytes.org>,
Jean-Philippe Brucker <jean-philippe@linaro.com>,
"Robin Murphy" <robin.murphy@arm.com>,
Dave Hansen <dave.hansen@intel.com>,
Thomas Gleixner <tglx@linutronix.de>, X86 Kernel <x86@kernel.org>,
bp@alien8.de, "H. Peter Anvin" <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>,
corbet@lwn.net, vkoul@kernel.org, dmaengine@vger.kernel.org,
linux-doc@vger.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>,
Kirill Shutemov <kirill.shutemov@linux.intel.com>,
Tony Luck <tony.luck@intel.com>,
Jacob Pan <jacob.jun.pan@linux.intel.com>
Subject: [PATCH v7 5/7] iommu/sva: Use GFP_KERNEL for pasid allocation
Date: Mon, 20 Mar 2023 11:59:08 -0700 [thread overview]
Message-ID: <20230320185910.2643260-6-jacob.jun.pan@linux.intel.com> (raw)
In-Reply-To: <20230320185910.2643260-1-jacob.jun.pan@linux.intel.com>
We’re not using spinlock-protected IOASID allocation anymore, there’s
no need for GFP_ATOMIC.
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
---
drivers/iommu/iommu-sva.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/iommu-sva.c b/drivers/iommu/iommu-sva.c
index 48e8a15ddc9b..c434b95dc8eb 100644
--- a/drivers/iommu/iommu-sva.c
+++ b/drivers/iommu/iommu-sva.c
@@ -28,8 +28,8 @@ static int iommu_sva_alloc_pasid(struct mm_struct *mm, ioasid_t min, ioasid_t ma
goto out;
}
- ret = ida_alloc_range(&iommu_global_pasid_ida, min, max, GFP_ATOMIC);
- if (ret < 0)
+ ret = ida_alloc_range(&iommu_global_pasid_ida, min, max, GFP_KERNEL);
+ if (ret < min)
goto out;
mm->pasid = ret;
ret = 0;
--
2.25.1
next prev parent reply other threads:[~2023-03-20 19:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-20 18:59 [PATCH v7 0/7] Remove VT-d virtual command interface and IOASID Jacob Pan
2023-03-20 18:59 ` [PATCH v7 1/7] iommu/vt-d: Remove virtual command interface Jacob Pan
2023-03-20 18:59 ` [PATCH v7 2/7] iommu/sva: Move PASID helpers to sva code Jacob Pan
2023-03-20 19:11 ` Jason Gunthorpe
2023-03-20 20:51 ` Jacob Pan
2023-03-20 18:59 ` [PATCH v7 3/7] iommu/sva: Remove PASID to mm lookup function Jacob Pan
2023-03-20 18:59 ` [PATCH v7 4/7] iommu/sva: Stop using ioasid_set for SVA Jacob Pan
2023-03-21 6:14 ` Baolu Lu
2023-03-20 18:59 ` Jacob Pan [this message]
2023-03-20 18:59 ` [PATCH v7 6/7] iommu/ioasid: Rename INVALID_IOASID Jacob Pan
2023-03-20 18:58 ` Dave Hansen
2023-03-20 20:38 ` Jacob Pan
2023-03-20 18:59 ` [PATCH v7 7/7] iommu: Remove ioasid infrastructure Jacob Pan
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