From: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
To: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH v2 5/5] iommu: Allow default domain type to be set on the kernel command line
Date: Tue, 21 Mar 2017 16:45:27 +0100 [thread overview]
Message-ID: <20170321154527.GB29659@8bytes.org> (raw)
In-Reply-To: <1489178976-15353-6-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
Hi Will,
On Fri, Mar 10, 2017 at 08:49:36PM +0000, Will Deacon wrote:
> @@ -1014,8 +1027,8 @@ struct iommu_group *iommu_group_get_for_dev(struct device *dev)
> * IOMMU driver.
> */
> if (!group->default_domain) {
> - group->default_domain = __iommu_domain_alloc(dev->bus,
> - IOMMU_DOMAIN_DMA);
> + group->default_domain =
> + __iommu_domain_alloc(dev->bus, iommu_def_domain_type);
It would be good to have a fall-back here if we are talking to an IOMMU
driver that uses default domains, but does not support identity-mapped
domains (yet). Exynos and Rockchip IOMMU drivers seem to fall into this
category. A dev_warn() also makes sense in case allocating a identity
domain fails.
Joerg
next prev parent reply other threads:[~2017-03-21 15:45 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-10 20:49 [PATCH v2 0/5] Implement SMMU passthrough using the default domain Will Deacon
[not found] ` <1489178976-15353-1-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2017-03-10 20:49 ` [PATCH v2 1/5] iommu/arm-smmu: Restrict domain attributes to UNMANAGED domains Will Deacon
2017-03-10 20:49 ` [PATCH v2 2/5] iommu/arm-smmu: Install bypass S2CRs for IOMMU_DOMAIN_IDENTITY domains Will Deacon
2017-03-10 20:49 ` [PATCH v2 3/5] iommu/arm-smmu-v3: Make arm_smmu_install_ste_for_dev return void Will Deacon
[not found] ` <1489178976-15353-4-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2017-03-16 16:55 ` Nate Watterson
2017-03-10 20:49 ` [PATCH v2 4/5] iommu/arm-smmu-v3: Install bypass STEs for IOMMU_DOMAIN_IDENTITY domains Will Deacon
2017-03-16 16:24 ` Nate Watterson
[not found] ` <420a5345344b4b574878caf3a916f1f2-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-03-16 18:19 ` Robin Murphy
[not found] ` <7d39363e-90e8-4119-3b7e-b1c4f6250879-5wv7dgnIgG8@public.gmane.org>
2017-03-21 17:08 ` Will Deacon
[not found] ` <20170321170816.GE30948-5wv7dgnIgG8@public.gmane.org>
2017-03-21 17:33 ` Robin Murphy
2017-03-10 20:49 ` [PATCH v2 5/5] iommu: Allow default domain type to be set on the kernel command line Will Deacon
[not found] ` <1489178976-15353-6-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2017-03-21 15:45 ` Joerg Roedel [this message]
[not found] ` <20170321154527.GB29659-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2017-03-21 17:21 ` Will Deacon
[not found] ` <20170321172137.GF30948-5wv7dgnIgG8@public.gmane.org>
2017-03-21 17:46 ` Robin Murphy
[not found] ` <807ecbb0-c9d7-fc0a-25d2-93b5c4374107-5wv7dgnIgG8@public.gmane.org>
2017-03-21 18:17 ` Will Deacon
[not found] ` <20170321181729.GG30948-5wv7dgnIgG8@public.gmane.org>
2017-03-23 10:22 ` Sricharan R
2017-03-23 10:38 ` Sricharan R
2017-03-22 11:25 ` Joerg Roedel
2017-03-21 15:46 ` [PATCH v2 0/5] Implement SMMU passthrough using the default domain Joerg Roedel
[not found] ` <20170321154624.GC29659-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2017-03-21 16:42 ` Will Deacon
[not found] ` <20170321164241.GD30948-5wv7dgnIgG8@public.gmane.org>
2017-03-21 16:46 ` Joerg Roedel
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