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Message-ID: <350f8544-8967-4f9e-bdcc-a464cdeadeea@linux.intel.com>
Date: Wed, 18 Oct 2023 10:32:25 +0800
From: Baolu Lu <baolu.lu@...ux.intel.com>
To: "Tian, Kevin" <kevin.tian@...el.com>,
Jason Gunthorpe <jgg@...dia.com>
Cc: baolu.lu@...ux.intel.com, Nicolin Chen <nicolinc@...dia.com>,
"Liu, Yi L" <yi.l.liu@...el.com>,
"joro@...tes.org" <joro@...tes.org>,
"alex.williamson@...hat.com" <alex.williamson@...hat.com>,
"robin.murphy@....com" <robin.murphy@....com>,
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<shameerali.kolothum.thodi@...wei.com>,
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"iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
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"Duan, Zhenzhong" <zhenzhong.duan@...el.com>,
"Martins, Joao" <joao.m.martins@...cle.com>
Subject: Re: [PATCH v4 08/17] iommufd: Always setup MSI and anforce cc on
kernel-managed domains
On 10/17/23 4:52 PM, Tian, Kevin wrote:
>>> another problem is that intel_iommu_enforce_cache_coherency()
>>> doesn't update existing entries. It only sets a domain flag to affect
>>> future mappings. so it means the 2nd idev is also broken.
>> This is such a gap, intel driver should not permit that.
> yes. @Baolu, can you add a fix?
Sure thing!
Best regards,
baolu
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