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From: Chris Wilson <>
To: David Woodhouse <>,
	Joerg Roedel <>,
	Lu Baolu <>
Cc:,,, Lu Baolu <>,
	"Balestrieri, Francesco" <>
Subject: Re: [PATCH 3/4] iommu/vt-d: Clean up pasid quirk for pre-production devices
Date: Sat, 07 Jul 2018 08:01:22 +0100	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Quoting Lu Baolu (2018-05-04 06:08:18)
> The pasid28 quirk is needed only for some pre-production devices.
> Remove it to make the code concise.

Every skylake mixing iommu and i915 is now inoperable on boot. Reads
by the GPU from iommu map pages return zero, writes disappear into the
void, no errors flagged.

Please revert until the matter is resolved.

  reply	other threads:[~2018-07-07  7:01 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-04  5:08 [PATCH 0/4] iommu/vt-d: Several cleanup patches Lu Baolu
2018-05-04  5:08 ` [PATCH 1/4] iommu: Clean up the comments for iommu_group_alloc Lu Baolu
2018-05-04  5:08 ` [PATCH 2/4] iommu/vt-d: Clean up unused variable in find_or_alloc_domain Lu Baolu
2018-05-04  5:08 ` [PATCH 3/4] iommu/vt-d: Clean up pasid quirk for pre-production devices Lu Baolu
2018-07-07  7:01   ` Chris Wilson [this message]
2018-07-07  7:21     ` Lu Baolu
2018-05-04  5:08 ` [PATCH 4/4] iommu/vt-d: Remove unnecessary parentheses Lu Baolu
2018-05-15 14:35 ` [PATCH 0/4] iommu/vt-d: Several cleanup patches Joerg Roedel

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