From: Jason Gunthorpe <jgg@nvidia.com>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>,
"Luck, Tony" <tony.luck@intel.com>,
LKML <linux-kernel@vger.kernel.org>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
Lu Baolu <baolu.lu@linux.intel.com>,
Joerg Roedel <joro@8bytes.org>,
"dmaengine@vger.kernel.org" <dmaengine@vger.kernel.org>,
"vkoul@kernel.org" <vkoul@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Will Deacon <will@kernel.org>,
David Woodhouse <dwmw2@infradead.org>,
"Raj, Ashok" <ashok.raj@intel.com>,
"Liu, Yi L" <yi.l.liu@intel.com>,
"Yu, Fenghua" <fenghua.yu@intel.com>,
"Jiang, Dave" <dave.jiang@intel.com>,
"Zanussi, Tom" <tom.zanussi@intel.com>
Subject: Re: [PATCH 3/4] iommu/sva: Support reservation of global PASIDs
Date: Mon, 20 Mar 2023 14:22:38 -0300 [thread overview]
Message-ID: <ZBiWXlxnRWzbb0XN@nvidia.com> (raw)
In-Reply-To: <BN9PR11MB5276DE801B64423E7BF3B68E8CBC9@BN9PR11MB5276.namprd11.prod.outlook.com>
On Thu, Mar 16, 2023 at 07:25:17AM +0000, Tian, Kevin wrote:
> I still doubt 'reserve' is the right interface to define.
>
> for DMA domain probably yes as it's static and one-off.
>
> but thinking louder when the same driver starts to support SIOV we
> need allocating additional PASIDs on demand which is hardly to be
> fit in a reservation interface.
Sure, it is the same thing.
It is "reserve" in the sense they are not assigned to mm structs and
not used for SVA.
Jason
next prev parent reply other threads:[~2023-03-20 17:28 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-02 0:59 [PATCH 0/4] Re-enable IDXD kernel workqueue under DMA API Jacob Pan
2023-03-02 0:59 ` [PATCH 1/4] iommu/vt-d: Implement set device pasid op for default domain Jacob Pan
2023-03-02 9:37 ` Tian, Kevin
2023-03-02 19:25 ` Jacob Pan
2023-03-02 14:06 ` Baolu Lu
2023-03-03 2:36 ` Tian, Kevin
2023-03-03 2:48 ` Baolu Lu
2023-03-03 3:02 ` Tian, Kevin
2023-03-03 4:38 ` Baolu Lu
2023-03-03 5:35 ` Tian, Kevin
2023-03-06 19:04 ` Jacob Pan
2023-03-06 19:02 ` Jason Gunthorpe
2023-03-06 23:45 ` Jacob Pan
2023-03-07 0:45 ` Jacob Pan
2023-03-03 5:38 ` Tian, Kevin
2023-03-03 16:35 ` Jacob Pan
2023-03-05 3:05 ` Baolu Lu
2023-03-06 8:18 ` Tian, Kevin
2023-03-06 18:43 ` Jacob Pan
2023-03-06 18:29 ` Jacob Pan
2023-03-06 12:57 ` Jason Gunthorpe
2023-03-06 17:36 ` Jacob Pan
2023-03-06 17:41 ` Jason Gunthorpe
2023-03-07 2:15 ` Baolu Lu
2023-03-02 0:59 ` [PATCH 2/4] iommu/vt-d: Use non-privileged mode for all PASIDs Jacob Pan
2023-03-02 14:11 ` Baolu Lu
2023-03-03 21:40 ` Jacob Pan
2023-03-02 0:59 ` [PATCH 3/4] iommu/sva: Support reservation of global PASIDs Jacob Pan
2023-03-02 3:06 ` kernel test robot
2023-03-02 3:19 ` kernel test robot
2023-03-02 9:43 ` Tian, Kevin
2023-03-03 21:47 ` Jacob Pan
2023-03-06 13:01 ` Jason Gunthorpe
2023-03-06 17:44 ` Jacob Pan
2023-03-06 17:43 ` Jason Gunthorpe
2023-03-06 17:57 ` Jacob Pan
2023-03-06 18:19 ` Jason Gunthorpe
2023-03-06 18:48 ` Luck, Tony
2023-03-06 19:05 ` Jason Gunthorpe
2023-03-09 17:06 ` Jacob Pan
2023-03-16 7:25 ` Tian, Kevin
2023-03-20 17:22 ` Jason Gunthorpe [this message]
2023-03-02 0:59 ` [PATCH 4/4] dmaengine/idxd: Re-enable kernel workqueue under DMA API Jacob Pan
2023-03-02 1:03 ` Dave Jiang
2023-03-02 9:47 ` Tian, Kevin
2023-03-02 12:57 ` Jason Gunthorpe
2023-03-03 21:49 ` Jacob Pan
2023-03-03 22:12 ` Jacob Pan
2023-03-03 1:19 ` Baolu Lu
2023-03-03 21:52 ` Jacob Pan
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