From: Christoph Hellwig <hch@infradead.org>
To: Lu Baolu <baolu.lu@linux.intel.com>
Cc: Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Jason Gunthorpe <jgg@ziepe.ca>, Kevin Tian <kevin.tian@intel.com>,
iommu@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/1] iommu/vt-d: Remove INTEL_IOMMU_BROKEN_GFX_WA
Date: Sun, 28 Jan 2024 22:03:05 -0800 [thread overview]
Message-ID: <Zbc_mdOYxMIxWAdd@infradead.org> (raw)
In-Reply-To: <20240127064512.16744-1-baolu.lu@linux.intel.com>
On Sat, Jan 27, 2024 at 02:45:12PM +0800, Lu Baolu wrote:
> Commit 62edf5dc4a524 ("intel-iommu: Restore DMAR_BROKEN_GFX_WA option for
> broken graphics drivers") was introduced 24 years ago as a temporary
> workaround for graphics drivers that used physical addresses for DMA and
> avoided DMA APIs. This workaround was disabled by default.
>
> As 24 years have passed, it is expected that graphics driver developers
> have migrated their drivers to use kernel DMA APIs. Therefore, this
> workaround is no longer required and could been removed.
How about you Cc the intel graphics maintainers and get a confirmation?
next prev parent reply other threads:[~2024-01-29 6:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-27 6:45 [PATCH 1/1] iommu/vt-d: Remove INTEL_IOMMU_BROKEN_GFX_WA Lu Baolu
2024-01-29 2:49 ` Tian, Kevin
2024-01-29 6:03 ` Christoph Hellwig [this message]
2024-01-29 6:08 ` Tian, Kevin
2024-01-29 7:24 ` Baolu Lu
2024-01-29 11:24 ` Robin Murphy
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