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From: Andi Shyti <andi.shyti@linux.intel.com>
To: Jonathan Cavitt <jonathan.cavitt@intel.com>
Cc: saurabhg.gupta@intel.com, intel-gfx@lists.freedesktop.org,
	chris.p.wilson@linux.intel.com
Subject: Re: [Intel-gfx] [PATCH] drm/i915/gt: Temporarily disable CPU caching into DMA for MTL
Date: Mon, 6 Nov 2023 17:37:05 +0100	[thread overview]
Message-ID: <ZUkWMUtLEozSdISF@ashyti-mobl2.lan> (raw)
In-Reply-To: <20231102175831.872763-1-jonathan.cavitt@intel.com>

Hi Jonathan,

On Thu, Nov 02, 2023 at 10:58:31AM -0700, Jonathan Cavitt wrote:
> FIXME: It is suspected that some Address Translation Service (ATS)
> issue on IOMMU is causing CAT errors to occur on some MTL workloads.
> Applying a write barrier to the ppgtt set entry functions appeared
> to have no effect, so we must temporarily use I915_MAP_WC in the
> map_pt_dma class of functions on MTL until a proper ATS solution is
> found.
> 
> Signed-off-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
> CC: Chris Wilson <chris.p.wilson@linux.intel.com>

acked and pushed!

Thanks!
Andi

      parent reply	other threads:[~2023-11-06 16:37 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-02 17:58 [Intel-gfx] [PATCH] drm/i915/gt: Temporarily disable CPU caching into DMA for MTL Jonathan Cavitt
2023-11-03  7:07 ` [Intel-gfx] ✗ Fi.CI.DOCS: warning for " Patchwork
2023-11-03  7:21 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2023-11-03 20:01 ` [Intel-gfx] [PATCH] " Sripada, Radhakrishna
2023-11-03 20:15   ` Cavitt, Jonathan
2023-11-03 21:06     ` Sripada, Radhakrishna
2023-11-04  2:38 ` [Intel-gfx] ✗ Fi.CI.IGT: failure for " Patchwork
2023-11-06 16:37 ` Andi Shyti [this message]

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