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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>,
	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: "Robin Murphy" <robin.murphy@arm.com>,
	"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 v5 5/7] iommu/sva: Use GFP_KERNEL for pasid allocation
Date: Thu,  9 Mar 2023 14:21:57 -0800	[thread overview]
Message-ID: <20230309222159.487826-7-jacob.jun.pan@linux.intel.com> (raw)
In-Reply-To: <20230309222159.487826-1-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>
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 b75711bdbe97..bd6fb2a6df23 100644
--- a/drivers/iommu/iommu-sva.c
+++ b/drivers/iommu/iommu-sva.c
@@ -27,8 +27,8 @@ 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


  parent reply	other threads:[~2023-03-09 22:18 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-09 22:21 [PATCH v5 0/7] Remove VT-d virtual command interface and IOASID Jacob Pan
2023-03-09 22:21 ` Jacob Pan
2023-03-09 22:21 ` [PATCH v5 1/7] iommu/vt-d: Remove virtual command interface Jacob Pan
2023-03-09 22:21 ` [PATCH v5 2/7] iommu/sva: Move PASID helpers to sva code Jacob Pan
2023-03-10  1:43   ` Jason Gunthorpe
2023-03-10 19:23     ` Jacob Pan
2023-03-10 20:00   ` Robin Murphy
2023-03-10 21:36     ` Jacob Pan
2023-03-09 22:21 ` [PATCH v5 3/7] iommu/sva: Remove PASID to mm lookup function Jacob Pan
2023-03-10  3:44   ` Baolu Lu
2023-03-09 22:21 ` [PATCH v5 4/7] iommu/sva: Stop using ioasid_set for SVA Jacob Pan
2023-03-10  5:07   ` Baolu Lu
2023-03-10 17:52     ` Jacob Pan
2023-03-09 22:21 ` Jacob Pan [this message]
2023-03-09 22:21 ` [PATCH v5 6/7] iommu/ioasid: Rename INVALID_IOASID Jacob Pan
2023-03-09 22:21 ` [PATCH v5 7/7] iommu: Remove ioasid infrastructure Jacob Pan

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