From: joro@8bytes•org (Joerg Roedel)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 1/5] iommu/arm-smmu: Restrict domain attributes to UNMANAGED domains
Date: Thu, 26 Jan 2017 18:03:30 +0100 [thread overview]
Message-ID: <20170126170329.GB27598@8bytes.org> (raw)
In-Reply-To: <1484849955-1871-2-git-send-email-will.deacon@arm.com>
On Thu, Jan 19, 2017 at 06:19:11PM +0000, Will Deacon wrote:
> The ARM SMMU drivers provide a DOMAIN_ATTR_NESTING domain attribute,
> which allows callers of the IOMMU API to request that the page table
> for a domain is installed at stage-2, if supported by the hardware.
>
> Since setting this attribute only makes sense for UNMANAGED domains,
> this patch returns -ENODEV if the domain_{get,set}_attr operations are
> called on other domain types.
Isn't -EINVAL more suitable here? In the end the domain passed in is
invalid because it does not support attributes, no?
Joerg
next prev parent reply other threads:[~2017-01-26 17:03 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-19 18:19 [PATCH 0/5] Implement SMMU passthrough using the default domain Will Deacon
2017-01-19 18:19 ` [PATCH 1/5] iommu/arm-smmu: Restrict domain attributes to UNMANAGED domains Will Deacon
2017-01-19 18:41 ` Robin Murphy
2017-01-26 17:06 ` Joerg Roedel
2017-01-26 17:03 ` Joerg Roedel [this message]
2017-01-26 17:57 ` Will Deacon
2017-01-19 18:19 ` [PATCH 2/5] iommu/arm-smmu: Install bypass S2CRs for IOMMU_DOMAIN_IDENTITY domains Will Deacon
2017-01-19 18:50 ` Robin Murphy
2017-01-19 18:19 ` [PATCH 3/5] iommu/arm-smmu-v3: Install bypass STEs " Will Deacon
2017-01-19 18:56 ` Robin Murphy
2017-01-19 18:19 ` [PATCH 4/5] arm64: dma-mapping: Only swizzle DMA ops for IOMMU_DOMAIN_DMA Will Deacon
2017-01-19 19:00 ` Robin Murphy
2017-01-26 17:57 ` Will Deacon
2017-01-19 18:19 ` [PATCH 5/5] iommu: Allow default domain type to be set on the kernel command line Will Deacon
2017-01-26 17:15 ` Joerg Roedel
2017-01-26 17:26 ` Robin Murphy
2017-01-26 17:48 ` Will Deacon
2017-01-24 15:12 ` [PATCH 0/5] Implement SMMU passthrough using the default domain Sricharan
2017-01-26 17:18 ` Joerg Roedel
2017-02-02 15:02 ` Rob Clark
2017-02-02 15:12 ` Will Deacon
2017-02-03 12:20 ` Rob Clark
2017-02-02 15:45 ` Sricharan
2017-02-02 16:10 ` Will Deacon
2017-02-03 16:33 ` Sricharan
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