From: Christoph Hellwig <hch@infradead.org>
To: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
Christoph Hellwig <hch@infradead.org>,
Joerg Roedel <joro@8bytes.org>,
Alex Williamson <alex.williamson@redhat.com>,
Lu Baolu <baolu.lu@linux.intel.com>,
"iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
David Woodhouse <dwmw2@infradead.org>,
Jean-Philippe Brucker <jean-philippe@linaro.com>,
"Raj, Ashok" <ashok.raj@intel.com>
Subject: Re: [PATCH v2 1/3] iommu/uapi: Define uapi version and capabilities
Date: Tue, 14 Apr 2020 01:11:07 -0700 [thread overview]
Message-ID: <20200414081107.GA7315@infradead.org> (raw)
In-Reply-To: <20200413134157.395981a6@jacob-builder>
On Mon, Apr 13, 2020 at 01:41:57PM -0700, Jacob Pan wrote:
> Hi All,
>
> Just a gentle reminder, any feedback on the options I listed below? New
> ideas will be even better.
>
> Christoph, does the explanation make sense to you? We do have the
> capability/flag based scheme for IOMMU API extension, the version is
> mainly used for size lookup. Compatibility checking is another use of
> the version, it makes checking easy when a vIOMMU is launched.
No. If you truely need different versions use different ioctl
identifiers. If it really is just the size pass the size and not a
version.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@infradead.org>
To: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
"Raj, Ashok" <ashok.raj@intel.com>,
Jean-Philippe Brucker <jean-philippe@linaro.com>,
"iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Alex Williamson <alex.williamson@redhat.com>,
David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCH v2 1/3] iommu/uapi: Define uapi version and capabilities
Date: Tue, 14 Apr 2020 01:11:07 -0700 [thread overview]
Message-ID: <20200414081107.GA7315@infradead.org> (raw)
In-Reply-To: <20200413134157.395981a6@jacob-builder>
On Mon, Apr 13, 2020 at 01:41:57PM -0700, Jacob Pan wrote:
> Hi All,
>
> Just a gentle reminder, any feedback on the options I listed below? New
> ideas will be even better.
>
> Christoph, does the explanation make sense to you? We do have the
> capability/flag based scheme for IOMMU API extension, the version is
> mainly used for size lookup. Compatibility checking is another use of
> the version, it makes checking easy when a vIOMMU is launched.
No. If you truely need different versions use different ioctl
identifiers. If it really is just the size pass the size and not a
version.
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2020-04-14 8:11 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-25 23:17 [PATCH v2 0/3] IOMMU user API enhancement Jacob Pan
2020-03-25 23:17 ` Jacob Pan
2020-03-25 23:17 ` [PATCH v2 1/3] iommu/uapi: Define uapi version and capabilities Jacob Pan
2020-03-25 23:17 ` Jacob Pan
2020-03-26 9:23 ` Christoph Hellwig
2020-03-26 9:23 ` Christoph Hellwig
2020-03-26 16:44 ` Jacob Pan
2020-03-26 16:44 ` Jacob Pan
2020-03-27 2:49 ` Tian, Kevin
2020-03-27 2:49 ` Tian, Kevin
2020-03-27 7:47 ` Christoph Hellwig
2020-03-27 7:47 ` Christoph Hellwig
2020-03-27 23:53 ` Jacob Pan
2020-03-27 23:53 ` Jacob Pan
2020-03-30 5:40 ` Tian, Kevin
2020-03-30 5:40 ` Tian, Kevin
2020-03-30 16:07 ` Jacob Pan
2020-03-30 16:07 ` Jacob Pan
2020-03-31 6:06 ` Tian, Kevin
2020-03-31 6:06 ` Tian, Kevin
2020-03-31 15:54 ` Jacob Pan
2020-03-31 15:54 ` Jacob Pan
2020-04-01 5:32 ` Tian, Kevin
2020-04-01 5:32 ` Tian, Kevin
2020-04-02 18:36 ` Jacob Pan
2020-04-02 18:36 ` Jacob Pan
2020-04-13 20:41 ` Jacob Pan
2020-04-13 20:41 ` Jacob Pan
2020-04-13 22:21 ` Alex Williamson
2020-04-13 22:21 ` Alex Williamson
2020-04-14 5:05 ` Jacob Pan
2020-04-14 5:05 ` Jacob Pan
2020-04-14 16:13 ` Alex Williamson
2020-04-14 16:13 ` Alex Williamson
2020-04-14 17:13 ` Jacob Pan
2020-04-14 17:13 ` Jacob Pan
2020-04-14 22:32 ` Jacob Pan
2020-04-14 22:32 ` Jacob Pan
2020-04-14 23:47 ` Tian, Kevin
2020-04-14 23:47 ` Tian, Kevin
2020-04-15 15:38 ` Jacob Pan
2020-04-15 15:38 ` Jacob Pan
2020-04-16 1:27 ` Tian, Kevin
2020-04-16 1:27 ` Tian, Kevin
2020-04-14 8:15 ` Christoph Hellwig
2020-04-14 8:15 ` Christoph Hellwig
2020-04-14 8:11 ` Christoph Hellwig [this message]
2020-04-14 8:11 ` Christoph Hellwig
2020-04-14 16:06 ` Jacob Pan
2020-04-14 16:06 ` Jacob Pan
2020-03-25 23:17 ` [PATCH v2 2/3] iommu/uapi: Use unified UAPI version Jacob Pan
2020-03-25 23:17 ` Jacob Pan
2020-03-25 23:17 ` [PATCH v2 3/3] iommu/uapi: Add helper function for size lookup Jacob Pan
2020-03-25 23:17 ` Jacob Pan
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