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Date:   Wed, 23 Oct 2019 16:04:03 -0700
From:   Jacob Pan <jacob.jun.pan@linux.intel.com>
To:     "Raj, Ashok" <ashok.raj@intel.com>
Cc:     iommu@lists.linux-foundation.org,
        LKML <linux-kernel@vger.kernel.org>,
        Joerg Roedel <joro@8bytes.org>,
        David Woodhouse <dwmw2@infradead.org>,
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        Jean-Philippe Brucker <jean-philippe@linaro.com>,
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        "Tian, Kevin" <kevin.tian@intel.com>,
        Christoph Hellwig <hch@infradead.org>,
        Lu Baolu <baolu.lu@linux.intel.com>,
        Jonathan Cameron <jic23@kernel.org>,
        Eric Auger <eric.auger@redhat.com>,
        jacob.jun.pan@linux.intel.com
Subject: Re: [PATCH v6 02/10] iommu/vt-d: Add custom allocator for IOASID
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On Tue, 22 Oct 2019 21:04:00 -0700
Jacob Pan <jacob.jun.pan@linux.intel.com> wrote:

> > > +		if (cap_caching_mode(iommu->cap) &&
> > > sm_supported(iommu)) {    
> > 
> > do you need to check against cap_caching_mode() or ecap_vcmd?
> >   
> I guess ecap_vcmd() will suffice. Kind of redundant.
Actually, we can check vcmd and vcmd_pasid here, then we dont need to
check it on every alloc/free calls.

Thanks,

Jacob