linux-kernel - Re: [PATCH 3/4] iommu/vt-d: Allow IOMMU_DOMAIN_DMA and IOMMU_DOMAIN

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Message-Id: <718BFBD9-F03B-4887-84FB-A21B97DAC9E4@arista.com>
Date:   Sat, 9 Mar 2019 11:57:27 +0000
From:   James Sewart <jamessewart@...sta.com>
To:     Dmitry Safonov <dima@...sta.com>
Cc:     iommu@...ts.linux-foundation.org, Tom Murphy <tmurphy@...sta.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        linux-kernel@...r.kernel.org, Lu Baolu <baolu.lu@...ux.intel.com>
Subject: Re: [PATCH 3/4] iommu/vt-d: Allow IOMMU_DOMAIN_DMA and
 IOMMU_DOMAIN_IDENTITY to be allocated

Hey Dmitry,

> On 8 Mar 2019, at 01:20, Dmitry Safonov <dima@...sta.com> wrote:
> 
> On 3/4/19 3:46 PM, James Sewart wrote:
>> +static inline int domain_is_initialised(struct dmar_domain *domain)
>> +{
>> +	return domain->flags & DOMAIN_FLAG_INITIALISED;
>> +}
> 
> Maybe check it in intel_iommu_domain_free(), eh?

Good shout, freeing a non attached IOMMU_DOMAIN_DMA domain is now 
different to an attached one.

> 
> Thanks,
>          Dmitry


Cheers,
James.