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From: Jacob Pan <jacob.jun.pan@linux.intel.com>
To: Baolu Lu <baolu.lu@linux.intel.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
	iommu@lists.linux.dev, Robin Murphy <robin.murphy@arm.com>,
	Jason Gunthorpe <jgg@nvidia.com>, Joerg Roedel <joro@8bytes.org>,
	dmaengine@vger.kernel.org, vkoul@kernel.org,
	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.jun.pan@linux.intel.com
Subject: Re: [PATCH v5 3/7] iommu: Move global PASID allocation from SVA to core
Date: Thu, 4 May 2023 14:26:33 -0700	[thread overview]
Message-ID: <20230504142633.1a7e78ae@jacob-builder> (raw)
In-Reply-To: <db3be8a2-6520-9652-6bee-dbceb320cfc2@linux.intel.com>

Hi Baolu,

On Wed, 3 May 2023 14:32:15 +0800, Baolu Lu <baolu.lu@linux.intel.com>
wrote:

> On 4/28/23 1:49 AM, Jacob Pan wrote:
> > +ioasid_t iommu_alloc_global_pasid_dev(struct device *dev)
> > +{
> > +	int ret;
> > +	ioasid_t max;
> > +
> > +	max = dev_iommu_get_max_pasids(dev);  
> 
> Perhaps you can use dev->iommu->max_pasids. It's static, so no need to
> recalculate it.
> 
sounds good!


Thanks,

Jacob

  reply	other threads:[~2023-05-04 21:22 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 ` [PATCH v5 2/7] iommu/sva: Explicitly exclude RID_PASID from SVA Jacob Pan
2023-04-28  9:40   ` 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 [this message]
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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